PCM INSPECTION [MZR 2.0, MZR 2.5]

id0140e4802500

Without Using the M-MDS

Caution

• The PCM terminal voltages vary with change in measuring conditions and vehicle conditions. Always carry out a total inspection of the input systems, output systems, and PCM to determine the cause of trouble. Otherwise, a wrong diagnosis will be made.

1. Measure the voltage at each terminal.

• If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s) referring to the Action column in the terminal voltage table.

Terminal voltage table (Reference)

am6zzw00000123

Terminal

Signal

Connected to

Test condition

Voltage (V)

inspection item

1A

Power supply

Main relay

Switch the ignition to off

Below 1.0

•  Related wiring harness

Switch the ignition to ON

B+

1B

Power supply

Main relay

Switch the ignition to off

Below 1.0

•  Related wiring harness

Switch the ignition to ON

B+

1C

Back-up power supply

Battery

(positive terminal)

Under any condition

B+

•  Battery

•  Related wiring harness

1D

—

—

—

—

—

1E

GND

GND

Under any condition

Below 1.0

•  Related wiring harness

1F

GND

GND

Under any condition

Below 1.0

•  Related wiring harness

1G

GND

GND

Under any condition

Below 1.0

•  Related wiring harness

1H

—

—

—

—

—

1I

A/C cut-off control

A/C relay

Idle, A/C operating

Below 1.0

•  A/C relay

•  Related wiring harness

Idle, A/C not operating

B+

1J

—

—

—

—

—

1K

—

—

—

—

—

1L

—

—

—

—

—

1M

—

—

—

—

—

1N

—

—

—

—

—

1O

—

—

—

—

—

1P

Sensor GND

MAF/IAT sensor

Under any condition

Below 1.0

•  Related wiring harness

1Q

Main relay control

Main relay

Switch the ignition to off

B+

•  Main relay

•  Related wiring harness

Switch the ignition to ON

Below 1.0

1R

Cooling fan control

Fan control module

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Fan control module

•  Related wiring harness

1S

—

—

—

—

—

1T

—

—

—

—

—

1U

—

—

—

—

—

1V

—

—

—

—

—

1W

—

—

—

—

—

1X

APP sensor No.2

APP sensor No.2

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  APP sensor No.2

•  Related wiring harness

1Y

—

—

—

—

—

1Z

—

—

—

—

—

1AA

—

—

—

—

—

1AB

Brake switch (No.1 signal)

Brake switch (No.1 signal)

Brake pedal depressed

B+

•  Brake switch (No.1 signal)

•  Related wiring harness

Brake pedal released

Below 1.0

1AC

IAT

MAF/IAT sensor

IG SW ON

IAT 20 °C

{68 °F}

Approx. 2.38

•  IAT sensor

•  Related wiring harness

IAT 60 °C

{140 °F}

Approx. 0.89

1AD

—

—

—

—

—

1AE

Constant voltage (Vref)

APP sensor

Switch the ignition to ON

Approx. 5.0

•  Related wiring harness

1AF

—

—

—

—

—

1AG

—

—

—

—

—

1AH

—

—

—

—

—

1AI

CAN (–)

CAN system related modules

Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.

•  Related wiring harness

1AJ

Sensor GND

APP sensor

Under any condition

Below 1.0

•  Related wiring harness

1AK

MAF

MAF/IAT sensor

Switch the ignition to ON

Approx. 0.7

•  MAF sensor

•  Related wiring harness

Idle (after warm up)

Approx. 1.2

1AL

—

—

—

—

—

1AM

CAN (+)

CAN system related modules

Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.

•  Related wiring harness

1AN*¹

Cruise control switch GND

Cruise control switch

Under any condition

Below 1.0

•  Related wiring harness

1AO

—

—

—

—

—

1AP

APP sensor No.1

APP sensor No.1

IG SW ON

Accelerator pedal released

Approx. 0.8

•  APP sensor No.1

•  Related wiring harness

Accelerator pedal depressed

Approx. 4.0

1AQ^*1

Cruise control switch

Cruise control switch

Switch the ignition to ON

OFF switch pressed in

Approx. 0

•  Cruise control switch

•  Related wiring harnesses

CANCEL switch pressed in

Approx. 1.4

SET (-) switch pressed in

Approx. 2.4

SET (+) switch pressed in

Approx. 3.2

RESUME switch pressed in

Approx. 3.9

ON switch pressed in

Approx. 4.3

Except above

Approx. 4.6

1AR

Sensor GND

MAF/IAT sensor

Under any condition

Below 1.0

•  Related wiring harness

1AS

—

—

—

—

—

1AT

—

—

—

—

—

1AU

—

—

—

—

—

1AV

—

—

—

—

—

1AW

—

—

—

—

—

1AX

—

—

—

—

—

1AY

Ignition switch (IG1)

Ignition switch^*2, Ignition relay No.1^*3

Switch the ignition to off

Below 1.0

•  Ignition switch^*2, Ignition relay No.1^*3

•  Related wiring harness

Switch the ignition to ON

B+

1AZ

—

—

—

—

—

1BA

Purge control

Purge solenoid valve

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Purge solenoid valve

•  Related wiring harness

1BB

Starter relay control

Starter relay

Cranking

Below 1.0

•  Starter relay

•  Related wiring harness

1BC^*4

Neutral position

Neutral switch

Shift lever is at neutral position

Below 1.0

•  Neutral switch

•  Related wiring harness

Shift lever is not at neutral position

B+

1BD^*4

Clutch operation

CPP switch

Clutch pedal depressed

Below 1.0

•  CPP switch

•  Related wiring harness

Clutch pedal released

B+

1BE

GND

GND

Under any condition

Below 1.0

•  Related wiring harness

1BF

—

—

—

—

—

1BG^*5

Fuel pump control

Fuel pump relay

Switch the ignition to ON

B+

•  Fuel pump relay

•  Related wiring harness

Cranking

Below 1.0

Idle

Below 1.0

1BH^*6

Fuel pump control

Fuel pump relay

Switch the ignition to ON

B+

•  Fuel pump relay

•  Related wiring harness

Cranking

Below 1.0

Idle

Below 1.0

2A

A/F sensor heater control

A/F sensor heater

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  A/F sensor heater

•  Related wiring harness

2B

HO2S heater control

HO2S heater

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  HO2S heater

•  Related wiring harness

2C

—

—

—

—

—

2D

—

—

—

—

—

2E

OCV control

OCV

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  OCV

•  Related wiring harness

2F

—

—

—

—

—

2G

IGT1

Ignition coil No.1

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Ignition coil No.1

•  Related wiring harness

2H

IGT4

Ignition coil No.4

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Ignition coil No.4

•  Related wiring harness

2I

Variable tumble control

Variable tumble solenoid valve

ECT above 63 °C {145 °F} (MZR 2.0)/ 60 °C {140 °F} (MZR 2.5) while idling.

B+

•  Variable tumble solenoid valve

•  Related wiring harness

ECT below 63 °C {145 °F} (MZR 2.0)/ 60 °C {140 °F} (MZR 2.5) and engine speed below 3,750 rpm

Below 1.0

2J

Variable intake air control

Variable intake air solenoid valve

Engine speed: above 4,600 rpm (MZR 2.0)/4,400 rpm (MZR 2.5)

B+

•  Variable intake air solenoid valve

•  Related wiring harness

Engine speed: below 4,600 rpm (MZR 2.0)/4,400 rpm (MZR 2.5)

Below 1.0

2K

IGT2

Ignition coil No.2

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Ignition coil No.2

•  Related wiring harness

2L

IGT3

Ignition coil No.3

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Ignition coil No.3

•  Related wiring harness

2M

—

—

—

—

—

2N

—

—

—

—

—

2O

—

—

—

—

—

2P

—

—

—

—

—

2Q

HO2S

HO2S

Idle (after warm up)

0Û1.0

•  HO2S

•  Related wiring harness

2R

—

—

—

—

—

2S

CMP signal

CMP sensor

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  CMP sensor

•  Related wiring harness

2T

—

—

—

—

—

2U

Knocking (+)

KS

Switch the ignition to ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter)

Approx. 4.0

•  KS

•  Related wiring harness

2V

Knocking (–)

KS

Switch the ignition to ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter)

Below 1.0

•  KS

•  Related wiring harness

2W

CKP signal

CKP sensor

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  CKP sensor

•  Related wiring harness

2X

GND

Sensor shield

Under any condition

Below 1.0

•  Related wiring harness

2Y

—

—

—

—

—

2Z

A/F sensor

A/F sensor

Idle (after warm up)

Approx. 5.1

•  A/F sensor

•  Related wiring harness

2AA

Generator field coil control

Generator

(terminal D)

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Generator

•  Related wiring harness

2AB

—

—

—

—

—

2AC

A/F sensor

A/F sensor

Idle (after warm up): Approx. 0 mA

•  A/F sensor

•  Related wiring harness

2AD

A/F sensor

A/F sensor

•  Verify that the voltage increases when the engine speed increases.

•  A/F sensor

•  Related wiring harness

2AE

—

—

—

—

—

2AF

Generator output voltage

Generator

(terminal P)

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Generator

•  Related wiring harness

2AG

MAP

MAP sensor

Switch the ignition to ON

Approx. 4.1

•  MAP sensor

•  Related wiring harness

Idle

Approx. 1.2

2AH

ECT

ECT sensor

Switch the ignition to ON

ECT 20 °C

{68 °F}

3.04—3.14

•  ECT sensor

•  Related wiring harness

ECT 80 °C

{176 °F}

0.76—0.83

2AI

—

—

—

—

—

2AJ

—

—

—

—

—

2AK

TP sensor No.1

Throttle body (TP sensor)

Switch the ignition to ON

Accelerator pedal released

Approx. 0.6

•  TP sensor No.1

•  Related wiring harness

Accelerator pedal depressed

Approx. 4.2

2AL

TP sensor No.2

Throttle body (TP sensor)

Switch the ignition to ON

Accelerator pedal released

Approx. 4.4

•  TP sensor No.2

•  Related wiring harness

Accelerator pedal depressed

Approx. 0.8

2AM

CMP power

CMP sensor

Switch the ignition to ON

B+

•  Related wiring harness

Switch the ignition to off (after 10 s)

Below 1.0

2AN

Sensor GND

Throttle body (TP sensor)

Under any condition

Below 1.0

•  Related wiring harness

2AO

—

—

—

—

—

2AP

—

—

—

—

—

2AQ

CKP power

CKP sensor

Switch the ignition to ON

B+

•  Related wiring harness

Switch the ignition to off

Below 1.0

2AR

Constant voltage (Vref)

Throttle body (TP sensor)

Switch the ignition to ON

Approx. 5.0

•  Related wiring harness

2AS

HO2S GND

HO2S

Under any condition

Below 1.0

•  Related wiring harness

2AT

EGR valve control

EGR valve

Idle

B+

•  EGR valve

•  Related wiring harness

2AU

Constant voltage (Vref)

MAP sensor

Switch the ignition to ON

Approx. 5.0

•  Related wiring harness

2AV

Sensor GND

MAP sensor

Under any condition

Below 1.0

•  Related wiring harness

2AW

EGR valve control

EGR valve

Idle

Below 1.0

•  EGR valve

•  Related wiring harness

2AX

EGR valve control

EGR valve

Idle

Below 1.0

•  EGR valve

•  Related wiring harness

2AY

—

—

—

—

—

2AZ

Fuel injection (#4)

Fuel injector No.4

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Fuel injector No.4

•  Related wiring harness

2BA

EGR valve control

EGR valve

Idle

B+

•  EGR valve

•  Related wiring harness

2BB

Fuel injection (#1)

Fuel injector No.1

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Fuel injector No.1

•  Related wiring harness

2BC

Fuel injection (#2)

Fuel injector No.2

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Fuel injector No.2

•  Related wiring harness

2BD

Fuel injection (#3)

Fuel injector No.3

•  Inspect using the wave profile.
(See Inspection Using An Oscilloscope (Reference).)

•  Fuel injector No.3

•  Related wiring harness

2BE

Throttle valve actuator control (+)

Throttle body

(throttle valve actuator)

Idle (after warm up)

B+

•  Throttle valve actuator

•  Related wiring harness

2BF

Throttle valve actuator control (–)

Throttle body

(throttle valve actuator)

Idle (after warm up)

3.5—5.5

•  Throttle valve actuator

•  Related wiring harness

2BG

OCV

OCV

Switch the ignition to ON

B+

•  OCV

•  Related wiring harness

2BH

—

—

—

—

—

Terminal	Signal	Connected to	Test condition	Voltage (V)	inspection item
1A	Power supply	Main relay	Switch the ignition to off	Below 1.0	• Related wiring harness
Switch the ignition to ON	B+
1B	Power supply	Main relay	Switch the ignition to off	Below 1.0	• Related wiring harness
Switch the ignition to ON	B+
1C	Back-up power supply	Battery (positive terminal)	Under any condition	B+	• Battery • Related wiring harness
1D	—	—	—	—	—
1E	GND	GND	Under any condition	Below 1.0	• Related wiring harness
1F	GND	GND	Under any condition	Below 1.0	• Related wiring harness
1G	GND	GND	Under any condition	Below 1.0	• Related wiring harness
1H	—	—	—	—	—
1I	A/C cut-off control	A/C relay	Idle, A/C operating	Below 1.0	• A/C relay • Related wiring harness
Idle, A/C not operating	B+
1J	—	—	—	—	—
1K	—	—	—	—	—
1L	—	—	—	—	—
1M	—	—	—	—	—
1N	—	—	—	—	—
1O	—	—	—	—	—
1P	Sensor GND	MAF/IAT sensor	Under any condition	Below 1.0	• Related wiring harness
1Q	Main relay control	Main relay	Switch the ignition to off	B+	• Main relay • Related wiring harness
Switch the ignition to ON	Below 1.0
1R	Cooling fan control	Fan control module	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Fan control module • Related wiring harness
1S	—	—	—	—	—
1T	—	—	—	—	—
1U	—	—	—	—	—
1V	—	—	—	—	—
1W	—	—	—	—	—
1X	APP sensor No.2	APP sensor No.2	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• APP sensor No.2 • Related wiring harness
1Y	—	—	—	—	—
1Z	—	—	—	—	—
1AA	—	—	—	—	—
1AB	Brake switch (No.1 signal)	Brake switch (No.1 signal)	Brake pedal depressed	B+	• Brake switch (No.1 signal) • Related wiring harness
Brake pedal released	Below 1.0
1AC	IAT	MAF/IAT sensor	IG SW ON	IAT 20 °C {68 °F}	Approx. 2.38	• IAT sensor • Related wiring harness
IAT 60 °C {140 °F}	Approx. 0.89
1AD	—	—	—	—	—
1AE	Constant voltage (Vref)	APP sensor	Switch the ignition to ON	Approx. 5.0	• Related wiring harness
1AF	—	—	—	—	—
1AG	—	—	—	—	—
1AH	—	—	—	—	—
1AI	CAN (–)	CAN system related modules	Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.	• Related wiring harness
1AJ	Sensor GND	APP sensor	Under any condition	Below 1.0	• Related wiring harness
1AK	MAF	MAF/IAT sensor	Switch the ignition to ON	Approx. 0.7	• MAF sensor • Related wiring harness
Idle (after warm up)	Approx. 1.2
1AL	—	—	—	—	—
1AM	CAN (+)	CAN system related modules	Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.	• Related wiring harness
1AN*¹	Cruise control switch GND	Cruise control switch	Under any condition	Below 1.0	• Related wiring harness
1AO	—	—	—	—	—
1AP	APP sensor No.1	APP sensor No.1	IG SW ON	Accelerator pedal released	Approx. 0.8	• APP sensor No.1 • Related wiring harness
Accelerator pedal depressed	Approx. 4.0
1AQ^*1	Cruise control switch	Cruise control switch	Switch the ignition to ON	OFF switch pressed in	Approx. 0	• Cruise control switch • Related wiring harnesses
CANCEL switch pressed in	Approx. 1.4
SET (-) switch pressed in	Approx. 2.4
SET (+) switch pressed in	Approx. 3.2
RESUME switch pressed in	Approx. 3.9
ON switch pressed in	Approx. 4.3
Except above	Approx. 4.6
1AR	Sensor GND	MAF/IAT sensor	Under any condition	Below 1.0	• Related wiring harness
1AS	—	—	—	—	—
1AT	—	—	—	—	—
1AU	—	—	—	—	—
1AV	—	—	—	—	—
1AW	—	—	—	—	—
1AX	—	—	—	—	—
1AY	Ignition switch (IG1)	Ignition switch^2, Ignition relay No.1^3	Switch the ignition to off	Below 1.0	• Ignition switch^2, Ignition relay No.1^3 • Related wiring harness
Switch the ignition to ON	B+
1AZ	—	—	—	—	—
1BA	Purge control	Purge solenoid valve	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Purge solenoid valve • Related wiring harness
1BB	Starter relay control	Starter relay	Cranking	Below 1.0	• Starter relay • Related wiring harness
1BC^*4	Neutral position	Neutral switch	Shift lever is at neutral position	Below 1.0	• Neutral switch • Related wiring harness
Shift lever is not at neutral position	B+
1BD^*4	Clutch operation	CPP switch	Clutch pedal depressed	Below 1.0	• CPP switch • Related wiring harness
Clutch pedal released	B+
1BE	GND	GND	Under any condition	Below 1.0	• Related wiring harness
1BF	—	—	—	—	—
1BG^*5	Fuel pump control	Fuel pump relay	Switch the ignition to ON	B+	• Fuel pump relay • Related wiring harness
Cranking	Below 1.0
Idle	Below 1.0
1BH^*6	Fuel pump control	Fuel pump relay	Switch the ignition to ON	B+	• Fuel pump relay • Related wiring harness
Cranking	Below 1.0
Idle	Below 1.0
2A	A/F sensor heater control	A/F sensor heater	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• A/F sensor heater • Related wiring harness
2B	HO2S heater control	HO2S heater	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• HO2S heater • Related wiring harness
2C	—	—	—	—	—
2D	—	—	—	—	—
2E	OCV control	OCV	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• OCV • Related wiring harness
2F	—	—	—	—	—
2G	IGT1	Ignition coil No.1	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Ignition coil No.1 • Related wiring harness
2H	IGT4	Ignition coil No.4	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Ignition coil No.4 • Related wiring harness
2I	Variable tumble control	Variable tumble solenoid valve	ECT above 63 °C {145 °F} (MZR 2.0)/ 60 °C {140 °F} (MZR 2.5) while idling.	B+	• Variable tumble solenoid valve • Related wiring harness
ECT below 63 °C {145 °F} (MZR 2.0)/ 60 °C {140 °F} (MZR 2.5) and engine speed below 3,750 rpm	Below 1.0
2J	Variable intake air control	Variable intake air solenoid valve	Engine speed: above 4,600 rpm (MZR 2.0)/4,400 rpm (MZR 2.5)	B+	• Variable intake air solenoid valve • Related wiring harness
Engine speed: below 4,600 rpm (MZR 2.0)/4,400 rpm (MZR 2.5)	Below 1.0
2K	IGT2	Ignition coil No.2	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Ignition coil No.2 • Related wiring harness
2L	IGT3	Ignition coil No.3	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Ignition coil No.3 • Related wiring harness
2M	—	—	—	—	—
2N	—	—	—	—	—
2O	—	—	—	—	—
2P	—	—	—	—	—
2Q	HO2S	HO2S	Idle (after warm up)	0Û1.0	• HO2S • Related wiring harness
2R	—	—	—	—	—
2S	CMP signal	CMP sensor	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• CMP sensor • Related wiring harness
2T	—	—	—	—	—
2U	Knocking (+)	KS	Switch the ignition to ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter)	Approx. 4.0	• KS • Related wiring harness
2V	Knocking (–)	KS	Switch the ignition to ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter)	Below 1.0	• KS • Related wiring harness
2W	CKP signal	CKP sensor	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• CKP sensor • Related wiring harness
2X	GND	Sensor shield	Under any condition	Below 1.0	• Related wiring harness
2Y	—	—	—	—	—
2Z	A/F sensor	A/F sensor	Idle (after warm up)	Approx. 5.1	• A/F sensor • Related wiring harness
2AA	Generator field coil control	Generator (terminal D)	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Generator • Related wiring harness
2AB	—	—	—	—	—
2AC	A/F sensor	A/F sensor	Idle (after warm up): Approx. 0 mA	• A/F sensor • Related wiring harness
2AD	A/F sensor	A/F sensor	• Verify that the voltage increases when the engine speed increases.	• A/F sensor • Related wiring harness
2AE	—	—	—	—	—
2AF	Generator output voltage	Generator (terminal P)	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Generator • Related wiring harness
2AG	MAP	MAP sensor	Switch the ignition to ON	Approx. 4.1	• MAP sensor • Related wiring harness
Idle	Approx. 1.2
2AH	ECT	ECT sensor	Switch the ignition to ON	ECT 20 °C {68 °F}	3.04—3.14	• ECT sensor • Related wiring harness
ECT 80 °C {176 °F}	0.76—0.83
2AI	—	—	—	—	—
2AJ	—	—	—	—	—
2AK	TP sensor No.1	Throttle body (TP sensor)	Switch the ignition to ON	Accelerator pedal released	Approx. 0.6	• TP sensor No.1 • Related wiring harness
Accelerator pedal depressed	Approx. 4.2
2AL	TP sensor No.2	Throttle body (TP sensor)	Switch the ignition to ON	Accelerator pedal released	Approx. 4.4	• TP sensor No.2 • Related wiring harness
Accelerator pedal depressed	Approx. 0.8
2AM	CMP power	CMP sensor	Switch the ignition to ON	B+	• Related wiring harness
Switch the ignition to off (after 10 s)	Below 1.0
2AN	Sensor GND	Throttle body (TP sensor)	Under any condition	Below 1.0	• Related wiring harness
2AO	—	—	—	—	—
2AP	—	—	—	—	—
2AQ	CKP power	CKP sensor	Switch the ignition to ON	B+	• Related wiring harness
Switch the ignition to off	Below 1.0
2AR	Constant voltage (Vref)	Throttle body (TP sensor)	Switch the ignition to ON	Approx. 5.0	• Related wiring harness
2AS	HO2S GND	HO2S	Under any condition	Below 1.0	• Related wiring harness
2AT	EGR valve control	EGR valve	Idle	B+	• EGR valve • Related wiring harness
2AU	Constant voltage (Vref)	MAP sensor	Switch the ignition to ON	Approx. 5.0	• Related wiring harness
2AV	Sensor GND	MAP sensor	Under any condition	Below 1.0	• Related wiring harness
2AW	EGR valve control	EGR valve	Idle	Below 1.0	• EGR valve • Related wiring harness
2AX	EGR valve control	EGR valve	Idle	Below 1.0	• EGR valve • Related wiring harness
2AY	—	—	—	—	—
2AZ	Fuel injection (#4)	Fuel injector No.4	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Fuel injector No.4 • Related wiring harness
2BA	EGR valve control	EGR valve	Idle	B+	• EGR valve • Related wiring harness
2BB	Fuel injection (#1)	Fuel injector No.1	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Fuel injector No.1 • Related wiring harness
2BC	Fuel injection (#2)	Fuel injector No.2	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Fuel injector No.2 • Related wiring harness
2BD	Fuel injection (#3)	Fuel injector No.3	• Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)	• Fuel injector No.3 • Related wiring harness
2BE	Throttle valve actuator control (+)	Throttle body (throttle valve actuator)	Idle (after warm up)	B+	• Throttle valve actuator • Related wiring harness
2BF	Throttle valve actuator control (–)	Throttle body (throttle valve actuator)	Idle (after warm up)	3.5—5.5	• Throttle valve actuator • Related wiring harness
2BG	OCV	OCV	Switch the ignition to ON	B+	• OCV • Related wiring harness
2BH	—	—	—	—	—

*1 :With cruise control system

*2 :Without advanced keyless entry and push button start system

*3 :With advanced keyless entry and push button start system

*4 :MTX

*5 :With immobilizer system

*6 :Without immobilizer system

Inspection Using An Oscilloscope (Reference)

Cooling fan control

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PCM terminals

• 1R—body ground(–)

Oscilloscope setting

• 5 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

APP sensor No.2 signal

Accelerator pedal released

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Accelerator pedal depressed

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PCM terminals

• 1X(+)—body ground(–)

Oscilloscope setting

• 2.5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition

• Switch the ignition to ON.

A/F sensor heater control

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PCM terminals

• 2A(+)—body ground(–)

Oscilloscope setting

• 5 V/DIV (Y), 200 ms/DIV (X), DC range

Vehicle condition

• Idle (immediately after starting the engine)

HO2S heater control

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PCM terminals

• 2B(+)—body ground(–)

Oscilloscope setting

• 5 V/DIV (Y), 1 s/DIV (X), DC range

Vehicle condition

• Idle (immediately after starting the engine)

Purge control

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PCM terminals

• 1BA(+)—body ground(–)

Oscilloscope setting

• 10 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

OCV control signal

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PCM terminals

• 2E(+)—body ground(–)

Oscilloscope setting

• 2 V/DIV (Y), 0.8 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

CMP signal

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PCM terminals

• 2S(+)—body ground(–)

Oscilloscope setting

• 1 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

CKP signal

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PCM terminals

• 2W(+)—body ground(–)

Oscilloscope setting

• 1 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

IGT1, IGT2, IGT3, IGT4 control

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PCM terminals

• IGT1(ignition coil No.1): 2G(+)—body ground(–)

• IGT2(ignition coil No.2): 2K(+)—body ground(–)

• IGT3(ignition coil No.3): 2L(+)—body ground(–)

• IGT4(ignition coil No.4): 2H(+)—body ground(–)

Oscilloscope setting

• 1 V/DIV (Y), 50 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

Generator field coil control

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PCM terminals

• 2AA(+)—body ground(–)

Oscilloscope setting

• 0.5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

Generator output voltage

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PCM terminals

• 2AF(+)—body ground(–)

Oscilloscope setting

• 2 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

Fuel injection (#1, #2, #3, #4) control

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PCM terminals

• Fuel Injection No.1: 2BB(+)—body ground(–)

• Fuel Injection No.2: 2BC(+)—body ground(–)

• Fuel Injection No.3: 2BD(+)—body ground(–)

• Fuel Injection No.4: 2AZ(+)—body ground(–)

Oscilloscope setting

• 10 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition

• Idle after warm up

Using M-MDS

Note

• PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.

― CMP sensor

― Main relay

1. Connect the M-MDS to the DLC-2.

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2. Switch the ignition to ON.

3. Measure the PID value.

• If PID value is not within the specification, follow the instructions in Action column.

Note

• The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM. Therefore, an output device malfunction is not directly indicated as a malfunction of the monitored value for the output device. If a monitored value of an output device is out of specification, inspect the monitored value of the input device related to the output control.

• For input/output signals except those of the monitoring items, use a voltmeter to measure the PCM terminal voltage.

• The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are as follows.

― ACCS, ALTF, ARPMDES, EVAPCP, FAN_DUTY, FP, IMRC, IMTV, INJ_1~4, SEGRP, TEST, VT Duty1 wt

PID/DATA monitor table (reference)

Monitor item (Definition)	Unit/Condition	Condition/Specification (Reference)	Inspection item(s)	PCM terminal
AC_REQ (A/C request signal)	OFF/ON	• A/C switch OFF: OFF • A/C switch ON: ON	• Perform applicable DTC trouble shooting	—
ACCS (A/C relay)	OFF/ON	• A/C relay is OFF: OFF • A/C relay is ON: ON	• A/C relay • The following PIDs ― APP1, APP2, TP1, TP2, ECT, RPM	1I
AFR (Target air fuel ratio)	—	• Target air fuel ratio is displayed	• A/F sensor	—
AFR_ACT (Actual air fuel ratio)	—	• Actual air fuel ratio is displayed	• A/F sensor	2Z 2AC 2AD
ALTF (Generator field coil control duty value)	%	• Idle, E/L is operating: Duty value increases	• Generator • The following PIDs ― IAT, ECT, RPM, VPWR, ALTT V	2AA
ALTT V (Generator output voltage)	V	• Idle (no E/L): Approx. 14 V (This is an internal calculation value and differs from the terminal voltage.)	• Generator	2AF
APP (APP sensor)	%	• Accelerator pedal released: approx. 0 % • Accelerator pedal depressed: approx. 100 %	• APP sensor	1AE 1AJ
APP 1 (APP sensor No.1)	%	• Accelerator pedal released: approx. 15 % • Accelerator pedal depressed: approx. 80 %	• APP sensor No.1	1AP
APP 1 (APP sensor No.1)	V	• Accelerator pedal released: approx. 0.8 V • Accelerator pedal depressed: approx. 4.0 V	• APP sensor No.1	1AP
APP 2 (APP sensor No.2)	%	• Accelerator pedal released: approx. 7.5 % • Accelerator pedal depressed: approx. 42 %	• APP sensor No.2	1X
APP 2 (APP sensor No.2)	V	• Accelerator pedal released: approx. 0.4 V • Accelerator pedal depressed: approx. 2.0 V	• APP sensor No.2	1X
ARPMDES (Target engine speed)	RPM	• Indicate the target engine speed	• The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, MAP, ECT, RPM, BOO, SCCS, ALTT V	—
BARO^*3 (Barometric pressure)	kPa	Indicate the BARO	BARO sensor	—
BARO^*3 (Barometric pressure)	V	• Switch the ignition to ON (at sea level): approx. 4.1 V	BARO sensor	—
BOO Brake switch (No.1 signal)	OFF/ON	• Brake pedal depressed: ON • Brake pedal released: OFF	• Brake switch (No.1 signal)	1AB
BPA Brake switch (No.2 signal)	OFF/ON	• Brake pedal depressed: OFF • Brake pedal released: ON	• Brake switch (No.2 signal)	—
CATT11_DSD^*3 (Desired catalyst temperature bank one, sensor one)	°C	• Indicate the estimated catalytic converter temperature	• Perform applicable DTC troubleshooting.	—
CHRGLP (Generator warning light)	OFF/ON	• Switch the ignition to ON: ON • Idle: OFF	• Perform applicable DTC troubleshooting.	—
COLP (Refrigerant pressure sensor)	OFF/ON	• Refrigerant pressure is more than the specification.: On • Refrigerant pressure is less than the specification.: Off	• Refrigerant pressure sensor	—
CPP^*2 (Clutch pedal position)	OFF/ON	• Clutch pedal depressed: ON • Clutch pedal released: OFF	• CPP switch	1BD
CPP/PNP^*2 (Shift lever position)	OFF/ON	• Neutral position: ON • Others: OFF	Neutral switch	1BC
ECT (Engine coolant temperature)	°C	• Indicate the ECT	• ECT sensor	2AH
ECT (Engine coolant temperature)	V	• ECT 20 °C {68 °F}: 3.04—3.14 V • ECT 80 °C {176 °F}: 0.76—0.83 V	• ECT sensor	2AH
EQ_RAT11 (Equivalence ratio (lambda))	—	• Idle after warm-up: Approx. 1	• A/F sensor	2Z 2AC 2AD
EQ_RAT11_DSD (Desired equivalence ratio (lambda))	—	• Indicate the target lambda (Excess air factor = supplied air amount / theoretical air/fuel ratio)	• A/F sensor	—
ETC_ACT (Electronic throttle control actual)	°	• Indicate the TP angle	• Throttle valve actuator	2BE, 2BF
ETC_DSD (Electronic throttle control desired)	%	• Indicate the target TP angle (percent)	• Throttle valve actuator • The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, MAP, ECT, RPM, BOO, SCCS, ALTT V	—
ETC_DSD (Electronic throttle control desired)	°	• Indicate the target TP angle		—
EVAPCP (Purge solenoid valve duty value)	%	• Switch the ignition to ON: 0 % • Idle: 0 %	• Purge solenoid valve • The following PIDs ― MAF, IAT, MAP, ECT, O2S11, O2S12, RPM, BOO, VPWR	1BA
FAN_DUTY (Fan control module)	%	• When all of following condition are met: 50% ― Test mode ON ― WOT	• Fan control module • The following PIDs ― ECT, VPWR	1R
FP (Fuel pump relay)	OFF/ON	• Switch the ignition to ON: OFF • Cranking: ON • Idle: ON	• Fuel pump relay • The following PIDs ― RPM	1BG
FUELPW (Fuel injector duration)	sec	• Idle: Approx. 2.2 ms	• Fuel injector • The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, MAP, ECT, O2S11, O2S12, RPM, BOO, VPWR	2AZ 2BB 2BC 2BD
FUELSYS (Fuel system status)	OL/CL/CL-Fault/OL-Fault/OL-Drive	• Idle after warm-up: CL	• Fuel injector • The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, MAP, ECT, O2S11, O2S12, RPM, BOO, VPWR	—
HTR11 (A/F sensor heater)	OFF/ON	• Idle (after warm up): ONÛOFF	• A/F sensor heater • Inspect following PIDs ― TP1, TP2, MAF, IAT, ECT, RPM	2A
HTR12 (HO2S heater)	OFF/ON	• Idle (after warm up): ONÛOFF	• HO2S heater control • The following PIDs ― TP1, TP2, MAF, IAT, ECT, RPM	2B
IAT (Intake air temperature)	°C	• Indicate the IAT	• IAT sensor	1AC
IAT (Intake air temperature)	V	• IAT 20 °C {68 °F}: approx. 2.38 V • IAT 60 °C {140 °F}: approx. 0.89 V	• IAT sensor	1AC
IMRC (Variable tumble control)	OFF/ON	• ECT below 63 °C {145 °F} (MZR 2.0)/60 °C {140 °F} (MZR 2.5) and engine speed below 3,750 rpm: ON • ECT above 63 °C {145 °F} (MZR 2.0)/60 °C {140 °F} (MZR 2.5) while idling.: OFF	• Variable tumble solenoid valve • The following PIDs ― TP1, TP2, MAF, IAT, ECT, RPM	2I
IMTV (Variable intake air control)	OFF/ON	• Engine speed is below approx. 4,600 rpm (MZR 2.0)/4,400 rpm (MZR 2.5): ON • Engine speed is above approx. 4,600 rpm (MZR 2.0)/4,400 rpm (MZR 2.5): OFF	• Variable intake air solenoid valve • The following PIDs ― RPM	2J
INGEAR (Gears are engaged)	OFF/ON	• R, D, M range: ON • Others: OFF	• TR switch	—
ISC_FBK (ISC feedback value)	—	• ISC feedback value is displayed	• PCM	—
ISC_FBK_LRN (ISC feedback learning value)	—	• ISC feedback learning value is displayed.	• PCM	—
IVS (CTP condition)	Idle/Off_Idle	• Idle: Idle • Racing: Off Idle	• Perform applicable DTC troubleshooting.	—
KNOCKR (Knocking retard)	°	• Switch the ignition to ON: 0 ° • Idle: 0 °	• KS	2U 2V
LOAD (Engine load)	%	• Idle after warm-up: Approx. 15 %	• The following PIDs ― MAP, IAT, MAF, RPM	—
LONGFT1 (Long term fuel trim)	%	• Idle after warm-up: Approx.-15—20 %	• The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, MAP, ECT, O2S11, O2S12, RPM, BOO, VPWR	—
LONGFT12 (long term fuel trim (HO2S))	%	• Indicate the fuel learning correction amount (HO2S)	• Perform applicable DTC troubleshooting.	—
MAF (Mass airflow)	g/sec	• Indicate the MAF	• MAF sensor	1AK
MAF (Mass airflow)	V	• Switch the ignition to ON: Approx. 0.7 V • Idle (after warm up): Approx. 1.3 V	• MAF sensor	1AK
MAP (Manifold absolute pressure)	Pa	• Indicate the MAP	• MAP sensor	2AG
MAP (Manifold absolute pressure)	V	• Switch the ignition to ON (at sea level): approx. 4.1 V • Idle: approx. 1.2 V	• MAP sensor	2AG
MIL (Malfunction indicator lamp)	OFF/ON	• Idle, MIL illuminate: ON • Idle, MIL not illuminate: OFF	• Perform applicable DTC troubleshooting.	—
MIL_DIS (Travelled distance since the MIL illuminated)	km	• Indicate the travelled distance since the MIL illuminated	• Perform applicable DTC troubleshooting.	—
O2S11 (A/F sensor)	A	• Idle (after warm up): Approx. 0 mA	• A/F sensor	2Z 2AC 2AD
O2S12 (HO2S)	V	• Idle (after warm up): 0—1.0 V	• HO2S	2Q
RO2FT1 (HO2S fuel trim)	%	• Idle (after warm up): Approx. 0	• Perform applicable DTC troubleshooting.	—
RPM (Engine speed)	RPM	• Indicate the engine speed	• CKP sensor	2W
SC_CANCEL^*1 (CANSEL switch)	Inactive/Active	• CANSEL switch pressed in: Active • Except above: Inactive	• Cruise control switch	1AQ
SC_OFF^*1 (ON/OFF switch)	Inactive/Active	• ON/OFF switch pressed in (OFF): Active • Except above: Inactive	• Cruise control switch	1AQ
SC_ON^*1 (ON/OFF switch)	Inactive/Active	• ON/OFF switch pressed in (ON): Active • Except above: Inactive	• Cruise control switch	1AQ
SC_RES^*1 (RESUME switch)	Inactive/Active	• RESUME switch pressed in: Active • Except above: Inactive	• Cruise control switch	1AQ
SC_SET-^*1 (SET(-) switch)	Inactive/Active	• SET(-) switch pressed in: Active • Except above: Inactive	• Cruise control switch	1AQ
SC_SET+^*1 (SET(+) switch)	Inactive/Active	• SET(+) switch pressed in: Active • Except above: Inactive	• Cruise control switch	1AQ
SCCS^*1 (Cruise control switch)	V	• OFF switch pressed in: approx. 0 V • CANSEL switch pressed in: approx. 1.4 V • SET(-) switch pressed in: approx. 2.4 V • SET(+) switch pressed in: approx. 3.2 V • RESUME switch pressed in: approx. 3.9 V • ON switch pressed in: approx. 4.3 V • Except above: approx. 4.6	• Cruise control switch	1AQ
SEGRP (EGR control)	—	• Switch the ignition to ON: 0 • Idle: 0 • Engine speed is 1,187—4,200 rpm: 0—52	• EGR valve	2AT 2AX 2AW 2BA
SEGRP DSD (Desired EGR valve position)	%	• Indicate the desired EGR valve position	• EGR valve • The following PIDs ― TP1, TP2, MAF, IAT, ECT, RPM	—
SHRTFT1 (Short term fuel trim)	%	• Idle (after warm up):-25—25 %	• Perform applicable DTC troubleshooting.	—
SHRTFT12 (Short term fuel trim (HO2S))	%	• Indicate the fuel feedback correction amount (HO2S)	• Perform applicable DTC troubleshooting.	—
SPARKADV (Ignition timing)	°	• Indicate the ignition timing	• Ignition coil • The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, ECT, RPM, KNOCKR, BOO	2G 2H 2K 2L
TEST (Test mode)	OFF/ON	• Test mode ON: ON • Test mode OFF: OFF	—	—
TP REL (Relative throttle position)	%	• Accelerator pedal released: approx. 3% • Accelerator pedal depressed: approx. 75%	• The following PIDs ― TP1, TP2	—
TP 1 (TP sensor No.1)	%	• Accelerator pedal released: approx. 12% • Accelerator pedal depressed: approx. 84%	• TP sensor No.1	2AK
TP 1 (TP sensor No.1)	V	• Accelerator pedal released: approx. 0.6 V • Accelerator pedal depressed: approx. 4.2 V	• TP sensor No.1	2AK
TP 2 (TP sensor No.2)	%	• Accelerator pedal released: approx. 12% • Accelerator pedal depressed: approx. 84%	• TP sensor No.2	2AL
TP 2 (TP sensor No.2)	V	• Accelerator pedal released: approx. 4.4 V • Accelerator pedal depressed: approx. 0.8 V	• TP sensor No.2	2AL
TPCT (TP sensor voltage at CTP)	V	• Switch the ignition to ON: Approx. 0.5 V	• TP sensor No.1, No.2	2AK 2AL
VPWR (Battery positive voltage)	V	• Indicate the battery voltage	• Battery	1C
VSS (Vehicle speed)	KPH	• Indicate the vehicle speed	• DSC HU/CM	—
VT ACT1 (Actual valve timing)	°	• Idle: Approx. 0 ° • Racing (after warm up): 0—25 °	• CMP sensor • CKP sensor	2S 2W
VT DIFF1 (Difference between target and actual valve timing)	°	• Idle: approx. 0°	• CMP sensor • The following PIDs ― RPM, LOAD, VT ACT1	—
VT DUTY1 (Oil control valve duty value)	%	• Idle: Approx. 11.5 %	• OCV • The following PIDs ― APP1, APP2, TP1, TP2, MAF, IAT, ECT, RPM,	2E

*1 :With cruise control system

*2 :MTX

*3 :If equipped

• Following PIDs are for the ATX models. If inspects for following PIDs, (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FS5A-EL].)