TCM INSPECTION [DJVA-EL]

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Note

• The TCM terminal voltage can vary with conditions when measuring and changes due to age deterioration ON the vehicle, causing false diagnosis. Therefore a comprehensive inspection of the input and output systems, and the TCM is necessary to determine where the malfunction occurs.

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Terminal

Connected to/Signal name

Test Condition

Voltage (V)

Inspection Item

A1

GND

Under any condition

Below 1.0

•  Related harness

A2

Belt grip pressure linear solenoid

(See Input/Output Wave From (Reference).)

•  Belt grip pressure linear solenoid

•  Related harness

A3

Oil pressure sensor

Idle

P position

Approx. 1.0

•  Oil pressure sensor

•  Related harness

R position

Approx. 1.2

N position

Approx. 1.0

D range

Approx. 1.2

A4

Belt grip pressure linear solenoid

(See Input/Output Wave From (Reference).)

•  Belt grip pressure linear solenoid

•  Related harness

A5

TCC engage solenoid

(See Input/Output Wave From (Reference).)

•  TCC engage solenoid

•  Related harness

A6

IG switch

Ignition switch ON

Below 1.0

•  IG switch

•  Related harness

A7

CAN_L

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

A8

—

—

—

—

A9

Primary pulley speed sensor

(See Input/Output Wave From (Reference).)

•  Primary pulley speed sensor

•  Related harness

A10

Oil pressure sensor

Ignition switch ON

Below 1.0

•  Oil pressure sensor

•  Related harness

A11

TFT sensor

Ignition switch ON

CVT fluid temperature: Approx. 33°C{91°F}

Approx. 2.3

•  TFT sensor

•  Related harness

CVT fluid temperature: (80°C{176°F}

Approx. 0.8

A12

TFT sensor

Ignition switch ON

Below 1.0

•  TFT sensor

•  Related harness

A13

Grade sensor

Ignition switch ON

Below 1.0

•  Grade sensor

•  Related harness

A14

Shift control solenoid No.2

(See Input/Output Wave From (Reference).)

•  Shift control solenoid No.2

•  Related harness

A15

Shift control solenoid No.1

(See Input/Output Wave From (Reference).)

•  Shift control solenoid No.1

•  Related harness

A16

TCC solenoid

During neutral control

V_B

•  TCC solenoid

•  Related harness

Other than during neutral control

Below 1.0

A17

CAN_H

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

A18

—

—

—

—

A19

Primary pulley speed sensor

(See Input/Output Wave From (Reference).)

•  Primary pulley speed sensor

•  Related harness

A20

Oil pressure sensor

Ignition switch ON

Approx. 5.0

•  Oil pressure sensor

•  Related harness

A21

Grade sensor

Ignition switch ON

Approx. 5.0

•  Grade sensor

•  Related harness

A22

Grade sensor

Switch the ignition ON with the vehicle in a level condition.

Approx. 2.5

•  Grade sensor

•  Related harness

A23

GND

Under any condition

Below 1.0

•  Related harness

A24

Battery

Under any condition

V_B

•  Battery

•  Fuse

•  Related harness

B1

R position switch

Ignition switch ON

R position

V_B

•  TR switch

•  Related harness

Except R position

Below 1.0

B2

—

—

—

—

B3

—

—

—

—

B4

—

—

—

—

B5

Input/turbine speed sensor

(See Input/Output Wave From (Reference).)

•  Input/turbine speed sensor

•  Related harness

B6

Secondary pulley speed sensor

(See Input/Output Wave From (Reference).)

•  Secondary pulley speed sensor

•  Related harness

B7

D range switch

Ignition switch ON

D range

V_B

•  TR switch

•  Related harness

Except D range

Below 1.0

B8

N position switch

Ignition switch ON

N position

V_B

•  TR switch

•  Related harness

Except N position

Below 1.0

B9

M range switch

Ignition switch ON

M range

Below 1.0

•  M range switch

•  Related harness

Except M range

V_B

B10

—

—

—

—

B11

—

—

—

—

B12

—

—

—

—

B13

DWN switch

Ignition switch ON

Selector lever down-shift position

Below 1.0

•  DWN switch

•  Related harness

Except selector lever down-shift position

V_B

B14

Input/turbine speed sensor

(See Input/Output Wave From (Reference).)

•  Input/turbine speed sensor

•  Related harness

B15

—

—

—

—

B16

Secondary pulley speed sensor

(See Input/Output Wave From (Reference).)

•  Secondary pulley speed sensor

•  Related harness

B17

—

—

—

—

B18

—

—

—

—

B19

—

—

—

—

B20

P position switch

Ignition switch ON

N position

V_B

•  TR switch

•  Related harness

Except N position

Below 1.0

B21

UP switch

Ignition switch ON

Selector lever up-shift position

Below 1.0

•  UP switch

•  Related harness

Except selector lever up-shift position

V_B

B22

—

—

—

—

B23

—

—

—

—

B24

—

—

—

—

B25

—

—

—

—

B26

—

—

—

—

Terminal	Connected to/Signal name	Test Condition	Voltage (V)	Inspection Item
A1	GND	Under any condition	Below 1.0	• Related harness
A2	Belt grip pressure linear solenoid	(See Input/Output Wave From (Reference).)	• Belt grip pressure linear solenoid • Related harness
A3	Oil pressure sensor	Idle	P position	Approx. 1.0	• Oil pressure sensor • Related harness
R position	Approx. 1.2
N position	Approx. 1.0
D range	Approx. 1.2
A4	Belt grip pressure linear solenoid	(See Input/Output Wave From (Reference).)	• Belt grip pressure linear solenoid • Related harness
A5	TCC engage solenoid	(See Input/Output Wave From (Reference).)	• TCC engage solenoid • Related harness
A6	IG switch	Ignition switch ON	Below 1.0	• IG switch • Related harness
A7	CAN_L	Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible.
A8	—	—	—	—
A9	Primary pulley speed sensor	(See Input/Output Wave From (Reference).)	• Primary pulley speed sensor • Related harness
A10	Oil pressure sensor	Ignition switch ON	Below 1.0	• Oil pressure sensor • Related harness
A11	TFT sensor	Ignition switch ON	CVT fluid temperature: Approx. 33°C{91°F}	Approx. 2.3	• TFT sensor • Related harness
CVT fluid temperature: (80°C{176°F}	Approx. 0.8
A12	TFT sensor	Ignition switch ON	Below 1.0	• TFT sensor • Related harness
A13	Grade sensor	Ignition switch ON	Below 1.0	• Grade sensor • Related harness
A14	Shift control solenoid No.2	(See Input/Output Wave From (Reference).)	• Shift control solenoid No.2 • Related harness
A15	Shift control solenoid No.1	(See Input/Output Wave From (Reference).)	• Shift control solenoid No.1 • Related harness
A16	TCC solenoid	During neutral control	V_B	• TCC solenoid • Related harness
Other than during neutral control	Below 1.0
A17	CAN_H	Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible.
A18	—	—	—	—
A19	Primary pulley speed sensor	(See Input/Output Wave From (Reference).)	• Primary pulley speed sensor • Related harness
A20	Oil pressure sensor	Ignition switch ON	Approx. 5.0	• Oil pressure sensor • Related harness
A21	Grade sensor	Ignition switch ON	Approx. 5.0	• Grade sensor • Related harness
A22	Grade sensor	Switch the ignition ON with the vehicle in a level condition.	Approx. 2.5	• Grade sensor • Related harness
A23	GND	Under any condition	Below 1.0	• Related harness
A24	Battery	Under any condition	V_B	• Battery • Fuse • Related harness
B1	R position switch	Ignition switch ON	R position	V_B	• TR switch • Related harness
Except R position	Below 1.0
B2	—	—	—	—
B3	—	—	—	—
B4	—	—	—	—
B5	Input/turbine speed sensor	(See Input/Output Wave From (Reference).)	• Input/turbine speed sensor • Related harness
B6	Secondary pulley speed sensor	(See Input/Output Wave From (Reference).)	• Secondary pulley speed sensor • Related harness
B7	D range switch	Ignition switch ON	D range	V_B	• TR switch • Related harness
Except D range	Below 1.0
B8	N position switch	Ignition switch ON	N position	V_B	• TR switch • Related harness
Except N position	Below 1.0
B9	M range switch	Ignition switch ON	M range	Below 1.0	• M range switch • Related harness
Except M range	V_B
B10	—	—	—	—
B11	—	—	—	—
B12	—	—	—	—
B13	DWN switch	Ignition switch ON	Selector lever down-shift position	Below 1.0	• DWN switch • Related harness
Except selector lever down-shift position	V_B
B14	Input/turbine speed sensor	(See Input/Output Wave From (Reference).)	• Input/turbine speed sensor • Related harness
B15	—	—	—	—
B16	Secondary pulley speed sensor	(See Input/Output Wave From (Reference).)	• Secondary pulley speed sensor • Related harness
B17	—	—	—	—
B18	—	—	—	—
B19	—	—	—	—
B20	P position switch	Ignition switch ON	N position	V_B	• TR switch • Related harness
Except N position	Below 1.0
B21	UP switch	Ignition switch ON	Selector lever up-shift position	Below 1.0	• UP switch • Related harness
Except selector lever up-shift position	V_B
B22	—	—	—	—
B23	—	—	—	—
B24	—	—	—	—
B25	—	—	—	—
B26	—	—	—	—

Input/Output Wave From (Reference)

Belt grip pressure linear solenoid

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• TCM terminals

A4 (+)—A2 (-)

• Oscilloscope setting

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

• Test Condition

D range

While driving at vehicle speed of 30 km/h {19 mph}

TCC engage solenoid

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• TCM terminals

A5 (+)—battery (-)

• Oscilloscope setting

5 V/DIV (Y), 100 ms/DIV (X), DC range

• Test Condition

D range

While driving at vehicle speed of 30 km/h {19 mph}

Primary pulley speed sensor

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• TCM terminals

A19 (+)—A9 (-)

• Oscilloscope setting

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

• Test Condition

D range

While driving at vehicle speed of 30 km/h {19 mph}

Shift control solenoid No.2

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• TCM terminals

A14 (+)—battery (-)

• Oscilloscope setting

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

• Test Condition

D range

Brake pedal is depressed while driving at 30 km/h {19 mph} and vehicle decelerated to 0 km/h {0 mph}.

Shift control solenoid No.1

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• TCM terminals

A15 (+)—battery (-)

• Oscilloscope setting

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

• Test Condition

D range

Vehicle accelerates from 0 km/h {0 mph} to 30 km/h {19 mph}

Input/turbine speed sensor

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• TCM terminals

B5 (+)—B14 (-)

• Oscilloscope setting

2 mV/DIV (Y), 1 ms/DIV (X), DC range

• Test Condition

D range

While driving at vehicle speed of 30 km/h {19 mph}

Secondary pulley speed sensor

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• TCM terminals

AB (+)—Y (-)

• Oscilloscope setting

2 mV/DIV (Y), 1 ms/DIV (X), DC range

• Test Condition

D range

While driving at vehicle speed of 30 km/h {19 mph}