PCM INSPECTION [L8, LF, L5]

id014046802500


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.

am6zzw00000122

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, FAN1, FAN2, FAN3, FP, HTR11, HTR12, IASV, IMRC, IMTV, INJ1~4, SEGRP, TEST, VT DUTY1 wt

PID/DATA monitor table (reference)

Monitor item (Definition)

Unit/Condition

Condition/Specification (Reference)

Inspection item

PCM terminal
AC_REQ
(A/C request signal)
Off/On
A/C switch ON: ON
A/C switch OFF: OFF
Refrigerant pressure switch (low, high), A/C switch
1AW
ACCS
(A/C relay)
Off/On
A/C relay ON: ON
A/C relay OFF: OFF
A/C relay
Inspect following PIDs: RPM, TP REL, ECT.
1I
AFR
(Target air-fuel ratio)
—
Target air-fuel ratio is displayed
A/F sensor
2Z
2AC
2AD
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)
%
Just after A/C switch ON and fan switch ON at idle: Duty value rises
Generator
Inspect following PIDs: IAT, ECT, RPM, VPWR, ALTT V.
2AA
ALTT V
(Generator output voltage)
V
Switch the ignition to ON: 0 V
Idle: Approx. 14 V*1 (E/L not operating)
Generator
2AF
APP 1
(Accelerator pedal position sensor 1)
%
•  Accelerator pedal released: Approx. 15 %
•  Accelerator pedal depressed: Approx. 80 %
APP sensor
1AO
V
•  Accelerator pedal released: Approx. 0.8 V
•  Accelerator pedal depressed: Approx. 4.0 V
APP 2
(Accelerator pedal position sensor 2)
%
•  Accelerator pedal released: Approx. 7.5 %
•  Accelerator pedal depressed: Approx. 42 %
APP sensor
1AP
V
•  Accelerator pedal released: Approx. 0.4 V
•  Accelerator pedal depressed: Approx. 2.0 V
ARPMDES
(Target engine speed)
RPM
•  Indicate the target engine speed
CKP sensor
Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP REL, INGEAR, ALTT V.
—
BOO
(Brake switch)
Off/On
Brake pedal depressed: ON
Brake pedal released: OFF
Brake switch
1AB
BPA*10
(Brake pressure applied switch)
Off/On
Brake pedal depressed: ON
Brake pedal released: OFF
Brake switch
1AF
CATT11_DSD
(Desired catalyst temperature bank one, sensor one)
°C
Indicate the estimated catalytic converter temperature
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5])
—
CHRGLP
(Generator warning light)
Off/On
Switch the ignition to ON: ON
Idle: OFF
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
—
COLP*2
(Refrigerant pressure switch (middle))
Off/On
Refrigerant pressure switch (middle) ON *3 at idle: ON
Refrigerant pressure switch (middle) OFF*4 at idle: OFF
Refrigerant pressure switch (middle)
1AX
CPP*5
(Clutch pedal position)
Off/On
Clutch pedal depressed: ON
Clutch pedal released: OFF
CPP switch
1BD
CPP/PNP*5
(Shift lever position)
Off/On
Neutral position: ON
Others: OFF
Neutral switch
1BC
ECT
(Engine coolant temperature)
°C
°F
Indicate the ECT
ECT sensor
2AH
V
ECT 20 °C {68 °F}: 3.04—3.14 V
ECT 80 °C {176 °F}: 0.76—0.83 V
EQ_RAT11
(Equivalence ratio (lambda))
—
Idling after warm-up: Approx. 1
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
2Z
2AC
2AD
EQ_RAT11_DSD
(Desired equivalence ratio (lambda))
—
Idling after warm-up: Approx. 1
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
2Z
2AC
2AD
ETC_ACT
(Electronic throttle control actual)
°
Indicate the desired TP by angle
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
2BE, 2BF
ETC_DSD
(Electronic throttle control desired)
%
Indicate the desired TP by percent
TP sensor
Inspect following PIDs:APP1, APP2, ETC_ACT.
—
°
Indicate the desired TP by angle
EVAPCP
(Purge solenoid valve duty value)
%
Switch the ignition to ON: 0%
Idle: 0%
Inspect following PIDs: IAT, RPM, ECT, MAF, O2S11, INGEAR, VPWR.
2C
FAN1
(Cooling fan control)
Off/On
ECT below 100 °C {212 °F}: OFF
Others: ON
Cooling fan relay
Inspect following PIDs: RPM, TP REL, ECT, COLP, TEST.
1U
FAN2*6
(Cooling fan control)
Off/On
ECT below 108 °C {226 °F}: OFF
A/C operating, refrigerant pressure switch (middle) is OFF, and ECT below 108 °C {226 °F}: OFF
Others: ON
Cooling fan relay
Inspect following PIDs: RPM, TP REL, ECT, COLP, TEST.
1R
FAN3*7
(Cooling fan control)
Off/On
ECT below 100 °C {212 °F}: OFF
A/C operating, refrigerant pressure switch (middle) is ON, and ECT below 108 °C {226 °F}: OFF
Other: ON
Cooling fan relay
Inspect following PIDs: RPM, TP REL, ECT, COLP, TEST.
1V
FP
(Fuel pump relay)
Off/On
Switch the ignition to ON: OFF
Idle: ON
Cranking: ON
Fuel pump relay
Inspect following PIDs: RPM.
1BG
FUELPW
(Fuel injector duration)
sec
Idle (after warm up): approx. 1.6 ms
Fuel injector
Inspect following PIDs: IAT, MAF, TP REL, MAP, ECT, RPM, O2S11, O2S12, INGEAR, VPWR, ALTT V.
2AZ
2BB
2BC
2BD
FUELSYS
(Fuel system status)
OL/CL/CL-Fault/OL-Fault/OL-Drive
Idle (after warm up): CL
Fuel injector
Inspect following PIDs: IAT, MAF, TP REL, MAP, ECT, RPM, O2S11, O2S12, INGEAR, VPWR, ALTT V.
—
HTR11
(A/F sensor heater)
Off/On
Idle (after warm up): ONÛOFF
Inspect following PIDs: IAT, MAF, TP REL, ECT, RPM.
2A
HTR12
(HO2S heater)
Off/On
Idle (after warm up): ONÛOFF
Inspect following PIDs: IAT, MAF, ECT, RPM.
2B
IASV*8
(Variable air duct control solenoid valve)
Off/On
ECT is above 70 °C {158 °F}, engine speed is above 5,800 rpm, and TP opening angle is above 50%: ON
Others: OFF
VAD solenoid valve
Inspect following PIDs: ECT, RPM, TP REL.
1K
IAT
(Intake air temperature)
°C
°F
Indicate the IAT.
IAT sensor
1AT
V
IAT 20 °C {68 °F}: Approx. 2.38 V
IAT 60 °C {140 °F}: approx. 0.89 V
IMRC
(Variable tumble solenoid valve)
Off/On
•  Engine speed is below approx. 3,750 rpm and ECT is below 63 °C {145 °F} : On
•  Others: Off
Variable tumble solenoid valve
Inspect following PIDs: TP REL, ECT, RPM.
2I
IMTV*9
(Variable Intake air control solenoid valve)
Off/On
Engine speed is below approx. 4,600(LF)/4,300(L5) rpm: On
Others: Off
Variable intake air control solenoid valve
Inspect following PIDs: RPM.
2J
INGEAR
(Load/no load condition)
Off/On
•  CPP or CPP/PNP is ON: Off
•  Others: On
Perform applicable DTC troubleshooting.
1BC, IBD
IVS
(CTP condition)
Idle/Off_Idle
•  CTP: Idle
•  Others: Off Idle
Perform applicable DTC troubleshooting.
—
KNOCKR
(Knocking retard)
°
Switch the ignition to ON: 0°
Idle: 0°
KS
2U
2V
LOAD
(Engine load)
%
Switch the ignition to ON: 0%
Idle (after warm up): approx.15%
MAF sensor
—
LONGFT1
(long term fuel trim)
%
Idle (after warm up): –15—20%
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
—
MAF
(Mass airflow)
g/s
Indicate the MAF
MAF sensor
1AK
V
Switch the ignition to ON: approx. 0.7 V
Idle (after warm up): approx. 1.2 V
MAP
(Manifold absolute pressure)
kPa, psi, Bar
Indicate the MAP
MAP sensor
2AG
V
•  Switch the ignition to ON (at sea level): approx. 4.1 V
•  Idle: approx. 1.2 V
MIL
(Malfunction indicator lamp)
Off/On
•  DTC stored: On
•  DTC not stored: Off
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
—
MIL_DIS
(Travelled distance since the MIL illuminated)
km
miles
Indicate the travelled distance since the MIL illuminated
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. –0.03—0.03
Perform applicable DTC troubleshooting.
—
RPM
(Engine speed)
RPM
Indicate the engine speed
CKP sensor
2W
SCCS*10
(Speed control command switch)
V
ON/OFF switch pressed in (OFF): approx. 0 V
CANSEL switch pressed in: approx. 1.3 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/OFF switch pressed in (ON): approx. 4.3 V
Inspect cruise control switch.
—
SEGRP
(EGR valve (stepping motor) position)
—
Switch the ignition to ON: 0
Idle: 0 step
Cranking: 0—52
EGR valve
Inspect following PIDs: MAF, TP REL, ECT, RPM, VSS.
2AT, 2AX, 2AW, 2BA
SEGRP DSD
(Desired EGR valve position)
%
Indicate the desired EGR valve position
Inspect following PIDs: MAF, TP REL, ECT, RPM, VSS.
—
SHRTFT1
(Short term fuel trim)
%
Idle (after warm up): approx.–25—25%
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
—
SPARKADV
(Ignition timing)
°
Indicate the ignition timing
Inspect following PIDs: MAF, TP REL, ECT, RPM, INGEAR, VPWR.
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%
TP sensor
—
TP 1
(TP)
%
Accelerator pedal released: approx. 12%
Accelerator pedal depressed: approx. 84%
TP sensor
2AK
V
Accelerator pedal released: 0.6 V
Accelerator pedal depressed: 4.2 V
TP 2
(TP)
%
Accelerator pedal released: approx. 12%
Accelerator pedal depressed: approx. 84%
TP sensor
2AL
V
Accelerator pedal released: 4.4 V
Accelerator pedal depressed: 0.8 V
TPCT
(TP sensor voltage at CTP)
V
Approx. 0.5 V
TP sensor
2AK
2AL
VPWR
(Battery positive voltage)
V
•  Switch the ignition to ON: B+
Battery
1C
VSS
(Vehicle speed)
KPH
Indicate the vehicle speed
Perform applicable DTC troubleshooting.
(See DTC TABLE [L8, LF, L5].)
—
VT ACT1*9
(Actual valve timing)
°
Idle: Approx. 0°
Racing after warm up: 0—30°(LF), 0—25°(L5)
OCV
Inspect following PIDs: TP REL, ECT, RPM.
2E
VT DIFF1*9
(Difference between target and actual valve timing)
°
Idle: Approx. 0°
OCV
Inspect following PIDs: TP REL, ECT, RPM.
2E
VT DUTY1*9
(Oil control valve duty value)
%
Idle: Approx. 11.5%
OCV
Inspect following PIDs: TP REL, ECT, RPM.
2E

*1  :Calculated value; differs from terminal voltage
*2  :Vehicles equipped with refrigerant pressure switch (middle)
*3  :Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.69—1.84 MPa {17.3—18.7 kgf/cm2, 247—265 psi}
*4  :Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.26—1.49 MPa {12.9—15.1 kgf/cm2, 184—214 psi}
*5  :MTX
*6  :Vehicles equipped with three or four cooling fan relays
*7  :Vehicles equipped with two or four cooling fan relays
*8  :L5
*9  :LF, L5
*10  :Vehicles equipped with cruise control switch
•  Following PIDs are for the ATX models. If inspects for following PIDs, (See PID/DATA MONITOR INSPECTION [FS5A-EL].)

Without Using the SST

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
Ground
Under any condition
Below 1.0
•  Related wiring harness
1F
GND
Ground
Under any condition
Below 1.0
•  Related wiring harness
1G
GND
Ground
Under any condition
Below 1.0
•  Related wiring harness
1H
—
—
—
—
—
1I
A/C
A/C relay
A/C operating
Below 1.0
•  A/C relay
•  Related wiring harness
A/C not operating
B+
1J
—
—
—
—
1K*1
VAD control
VAD solenoid valve
Idle after warm up
Engine speed below 5,800 rpm
B+
•  VAD solenoid valve
•  Related wiring harness
Engine speed above 5,800 rpm
Below 1.0
1L
—
—
—
—
1M
—
—
—
—
—
1N
—
—
—
—
—
1O
—
—
—
—
—
1P
MAF 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*2
Cooling fan control
(Transfer)
Cooling fan relay No.2 and No.3
Idle
Cooling fan operating
Below 1.0
•  Cooling fan relay No.2 or No.3
•  Related wiring harness
Cooling fan not operating
B+
1S
—
—
—
—
—
1T
—
—
—
—
—
1U
Cooling fan control
(Main)
Cooling fan relay No.1
Idling
Cooling fan operating
Below 1.0
•  Cooling fan relay NO.1
•  Related wiring harness
Cooling fan not operating
B+
1V*3
Cooling fan control
(Add)
Cooling fan relaly No.2*4, Cooling fan relay No.4*5
Idling
Cooling fan operating
Below 1.0
•  Cooling fan relay
•  Related wiring harness
Cooling fan not operating
B+
1W
Constant voltage (Vref)
APP sensor
Switch the ignition to ON
Approx. 5.0
•  Related wiring harness
1X
—
—
—
—
—
1Y
—
—
—
—
—
1Z
—
—
—
—
—
1AA
—
—
—
—
—
1AB
Brake1
Brake switch No.1
Brake pedal depressed
B+
•  Brake switch No.1
•  Related wiring harness
Brake pedal released
Below 1.0
1AC
—
—
—
—
—
1AD
—
—
—
—
—
1AE
—
—
—
—
—
1AF*6
Brake2
Brake switch No.2
Brake pedal depressed
B+
•  Brake switch No.2
•  Related wiring harness
Brake pedal released
Below 1.0
1AG
—
—
—
—
—
1AH
—
—
—
—
—
1AI
CAN (–)
Instrument cluster, ABS/TCS HU/CM, TCM
Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
•  Related wiring harness
1AJ
—
—
—
—
—
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
Constant voltage (Vref)
APP sensor
Switch the ignition to ON
Approx. 5.0
•  Related wiring harness
1AM
CAN (+)
Instrument cluster, ABS HU/CM, TCM
Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
•  Related wiring harness
1AN*6
Cruise control switch ground
Cruise control switch
Under any condition
Below 1.0
•  Related wiring harness
1AO
APP sensor 1
APP sensor
IG SW ON
Accelerator pedal released
Approx. 0.8
•  APP sensor No.1
•  Related wiring harness
Accelerator pedal depressed
Approx. 4.0
1AP
APP sensor 2
APP sensor
IG SW ON
Accelerator pedal released
Approx. 0.4
•  APP sensor No.2
•  Related wiring harness
Accelerator pedal depressed
Approx. 2.0
1AQ*6
Cruise control switch
Cruise control switch
IG SW ON
ON/OFF switch pressed in (OFF)
Approx. 0
•  Cruise control switch
•  Related wiring harnesses
CANCEL switch pressed in
Approx. 1.3
SET (-) switch pressed in
Approx. 2.4
SET (+) switch pressed in
Approx. 3.2
RESUME switch pressed in
Approx. 3.9
ON/OFF switch pressed in (ON)
Approx. 4.3
1AR
IAT sensor GND
MAF/IAT sensor
Under any condition
Below 1.0
•  Related wiring harness
1AS
APP sensor GND
APP sensor
Under any condition
Below 1.0
•  Related wiring harness
1AT
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
1AU
—
—
—
—
—
1AV
APP sensor GND
APP sensor
Under any condition
Below 1.0
•  Related wiring harness
1AW
A/C
Refrigerant pvessure switch (low, high), A/C switch
Idle
A/C operating
Below 1.0
•  A/C switch
•  Refrigerant pressure switch (Low, high)
•  Related wiring harness
A/C not operating
B+
1AX*7
A/C compressor load
Refrigerant pressure switch (middle)
A/C ON
Refrigerant pressure is above 1.52 MPa {15.5 kgf/cm2, 220 psi}
Below 1.0
•  Refrigerant pressure switch (middle)
•  Related wiring harness
Refrigerant pressure is below 1.23 MPa {12.5 kgf/cm2, 178 psi}
B+
1AY
Ignition switch (IG1)
Ignition switch*8, Ignition relay*9
Switch the ignition to off
Below 1.0
•  Ignition switch*8, Ignition relay*9
•  Related wiring harness
Switch the ignition to ON
B+
1AZ
—
—
—
—
—
1BA
—
—
—
—
—
1BB
Starter relay control
Starter relay
Clutch pedal is not depressed*10, Shift position is not P or N range*12
Below 1.0
•  Starter relay
•  Related wiring harness
Clutch pedal is depressed*10, Shift position is P or N range*12
4 V or more
1BC*10
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*10
Clutch operation
CPP switch
Clutch pedal depressed
Below 1.0
•  CPP switch
•  Related wiring harness
Clutch pedal released
B+
1BE
GND
Ground
Under any condition
Below 1.0
•  Related wiring harness
1BF
—
—
—
—
—
1BG
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
—
—
—
—
—
2A
A/F sensor heater control
A/F sensor heater
•  Inspect using the wave profile.
•  A/F sensor heater
•  Related wiring harness
2B
HO2S heater control
HO2S heater
•  Inspect using the wave profile.
•  HO2S heater
•  Related wiring harness
2C
Purge control
Purge solenoid valve
•  Inspect using the wave profile.
•  Purge solenoid valve
•  Related wiring harness
2D
—
—
—
—
—
2E*11
OCV control
OCV
•  Inspect using the wave profile.
•  OCV
•  Related wiring harness
2F
—
—
—
—
—
2G
IGT1
Ignition coil
(No.1 cylinder)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2H
IGT4
Ignition coil
(No.4 cylinder)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2I
Variable tumble control
Variable tumble solenoid valve
ECT above 63 °C {145 °F} while idling.
B+
•  Variable tumble solenoid valve
•  Related wiring harness
ECT below 63 °C {145 °F} and engine speed below 3,750 rpm
Below 1.0
2J*11
Variable intake air control
Variable intake air solenoid valve
Engine speed: above 4,600(LF)/4,300(L5) rpm
B+
•  Variable intake air solenoid valve
•  Related wiring harness
Engine speed: below 4,600(LF)/4,300(L5) rpm
Below 1.0
2K
IGT2
Ignition coil
(No.2 cylinder)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2L
IGT3
Ignition coil
(No.3 cylinder)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2M
—
—
—
—
—
2N
—
—
—
—
—
2O
Sensor GND
HO2S
Under any condition
Below 1.0
•  Related wiring harness
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.
•  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.
•  CKP sensor
•  Related wiring harness
2X
Sensor shield
A/F sensor, HO2S, KS
Under any condition
Below 1.0
•  Related wiring harness
2Y
—
—
—
—
—
2Z
A/F sensor
A/F sensor
Switch the ignition to ON
Approx. 5.60
•  A/F sensor
•  Related wiring harness
Switch the ignition to off
Below 1.0
Idle (after warm up)
Approx. 5.10
2AA
Generator field coil control
Generator
(terminal D)
•  Inspect using the wave profile.
•  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.
•  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 (No. 1)
TP sensor No. 1
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 (No. 2)
TP sensor No. 2
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
—
—
—
—
—
2AO
Constant voltage (Vref)
TP sensor
Switch the ignition to ON
Approx. 5.0
•  Related wiring harness
2AP
TP sensor GND
TP sensor
Under any condition
Below 1.0
•  Related wiring harness
2AQ
CKP power
CKP sensor
Switch the ignition to ON
B+
•  Related wiring harness
Switch the ignition to off
Below 1.0
2AR
—
—
—
—
—
2AS
—
—
—
—
—
2AT
EGR valve #3 coil control
EGR valve (terminal B)
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
—
—
—
—
—
2AW
EGR valve #4 coil control
EGR valve
(terminal F)
Idle
Below 1.0
•  EGR valve
•  Related wiring harness
2AX
EGR valve #1 coil control
EGR valve
(terminal E)
Idle
Below 1.0
•  EGR valve
•  Related wiring harness
2AY
Sensor GND
ECT sensor, MAP sensor
Under any condition
Below 1.0
•  Related wiring harness
2AZ
Fuel injection (#4)
Fuel injector No.4
•  Inspect using the wave profile.
•  Fuel injector No.4
•  Related wiring harness
2BA
EGR valve #2 coil control
EGR valve
(terminal A)
Idle
B+
•  EGR valve
•  Related wiring harness
2BB
Fuel injection (#1)
Fuel injector No.1
•  Inspect using the wave profile.
•  Fuel injector No.1
•  Related wiring harness
2BC
Fuel injection (#2)
Fuel injector No.2
•  Inspect using the wave profile.
•  Fuel injector No.2
•  Related wiring harness
2BD
Fuel injection (#3)
Fuel injector No.3
•  Inspect using the wave profile.
•  Fuel injector No.3
•  Related wiring harness
2BE
Throttle valve actuator control (+)
Throttle body
Switch the ignition to ON
B+
•  Throttle valve actuator
•  Related wiring harness
2BF
Throttle valve actuator control (–)
Throttle body
Idle (after warm up)
3.5—5.5
•  Throttle valve actuator
•  Related wiring harness
2BG
—
—
—
—
—
2BH
—
—
—
—
—

*1  :L5
*2  :Vehicles equipped with three or four cooling fan relays
*3  :Vehicles equipped with two or four cooling fan relays
*4  :Vehicles equipped with two cooling fan relays
*5  :Vehicles equipped with four cooling fan relays
*6  :Vehicles equipped with cruise control switch
*7  :Vehicles equipped with refrigerant pressure switch (middle)
*8  :Without advanced keyless entry and push button start system
*9  :With advanced keyless entry and push button start system
*10  :MTX
*11  :LF, L5
*12  :ATX


Inspection Using An Oscilloscope (Reference)


Purge control signal

ampjjw00001527
PCM terminals
•  2C(+)—body ground(–)
Oscilloscope setting
•  10 V/DIV (Y), 20 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


OCV control signal

am6zzw00000126
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 sensor signal

am6zzw00000127
PCM terminals
•  2S(+)—body ground(–)
Oscilloscope setting
•  1 V/DIV (Y), 25 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


CKP sensor signal

am6zzw00000128
PCM terminals
•  2W(+)—body ground(–)
Oscilloscope setting
•  1 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


Generator field coil control signal

ampjjw00001520
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 signal

ampjjw00001521
PCM terminals
•  2AF(+)—body ground(–)
Oscilloscope setting
•  2 V/DIV (Y), 2 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


IGT1, IGT2, IGT3, IGT4 control signals

adejjw00000489
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


Fuel injection control

am3zzw00000023
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


HO2S heater control

ampjjw00001524
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)


A/F sensor heater control

ampjjw00001866
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)