TCM INSPECTION [SJ6A-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.

1.  Measure the terminal voltage of the TCM using a tester.

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Terminal Voltage Table (Reference)

Terminal	Connected to	Test Condition	Specification	Inspection item(s)
1A	Turbine sensor	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the turbine sensor (See TURBINE SENSOR INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
1B	Turbine sensor	Ignition switch ON	Approx. 2.5 V	•  Inspect the turbine sensor (See TURBINE SENSOR INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
1C	VSS	Ignition switch ON	Approx. 2.5 V	•  Inspect the VSS (See VEHICLE SPEED SENSOR (VSS) INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
1D	VSS	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the VSS (See VEHICLE SPEED SENSOR (VSS) INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
1E	Sensor shield	Under any condition	Below 1.0 V	•  Inspect the related wiring harness
1F	—	—	—	—
1G	—	—	—	—
1H	Sensor shield	Under any condition	Below 1.0 V	•  Inspect the related wiring harness
1I	—	—	—	—
1J	—	—	—	—
1K	TR switch	P position	B+	•  Inspect the TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		R position	B+
		N position	B+
		D position	Below 1.0 V
		M position	Below 1.0 V
1L	—	—	—	—
1M	TR switch	P position	B+	•  Inspect the TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		R position	Below 1.0 V
		N position	B+
		D position	B+
		M position	B+
1N	TR switch	P position	B+	•  Inspect the TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		R position	B+
		N position	Below 1.0 V
		D position	B+
		M position	B+
1O	TR switch	P position	Below 1.0 V	•  Inspect the TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		R position	B+
		N position	B+
		D position	B+
		M position	B+
1P	—	—	—	—
1Q	TFT check connector	Under any condition	B+	•  Inspect the related wiring harness
1R	IG1 relay	Ignition switch OFF	Below 1.0 V	•  Inspect the IG1 relay (See RELAY INSPECTION) •  Inspect the related wiring harness
		Ignition switch ON	B+
1S	—	—	—	—
1T	—	—	—	—
1U	—	—	—	—
1V	—	—	—	—
1W	—	—	—	—
1X	—	—	—	—
1Y	Electric AT oil pump driver relay (With i-stop)	Idle	Below 1.0 V	•  Inspect the electric AT oil pump driver relay (See RELAY INSPECTION) •  Inspect the related wiring harness
		During i-stop operation	B+
1Z	Electric AT oil pump driver control unit (With i-stop)	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the electric AT oil pump driver control unit (See ELECTRIC AT OIL PUMP DRIVER CONTROL UNIT INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
1AA	—	—	—	—
1AB	—	—	—	—
1AC	—	—	—	—
1AD	—	—	—	—
1AE	CAN related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
1AF	Electric AT oil pump driver control unit (With i-stop)	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the electric AT oil pump driver control unit (See ELECTRIC AT OIL PUMP DRIVER CONTROL UNIT INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
1AG	—	—	—	—
1AH	—	—	—	—
1AI	CAN related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
2A	—	—	—	—
2B	—	—	—	—
2C	CAN related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
2D	TCC control solenoid	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the TCC control solenoid (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2E	Line pressure control solenoid	Idle and selector lever is at P position or N position	Below 1.0 V	•  Inspect the line pressure control solenoid (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2F	—	—	—	—
2G	CAN related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
2H	—	—	—	—
2I	—	—	—	—
2J	TFT sensor	ATF temperature 20°C {68°F}	Approx. 3.0 V	•  Inspect the TFT sensor (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		ATF temperature 40°C {104°F}	Approx. 2.1 V
		ATF temperature 60°C {140°F}	Approx. 1.4 V
2K	—	—	—	—
2L	Shift solenoid G	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the shift solenoid G (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2M	TFT sensor	Under any condition	Below 1.0 V	•  Inspect the TFT sensor (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2N	—	—	—	—
2O	Shift solenoid F	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the shift solenoid F (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2P	GND	Under any condition	Below 1.0 V	•  Inspect the related wiring harness
2Q	TCC control solenoid	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the TCC control solenoid (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2R	Line pressure control solenoid	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the line pressure control solenoid (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2S	Shift solenoid D	1GR	Below 1.0 V	•  Inspect the shift solenoid D (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		2GR	Below 1.0 V
		3GR	Below 1.0 V
		4GR	Below 1.0 V
		5GR	B+
		6GR	B+
2T	—	—	—	—
2U	—	—	—	—
2V	Shift solenoid E	1GR	B+	•  Inspect the shift solenoid E (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		2GR	B+
		3GR	B+
		4GR	B+
		5GR	Below 1.0 V
		6GR	Below 1.0 V
2W	—	—	—	—
2X	GND	Under any condition	Below 1.0 V	•  Inspect the related wiring harness
2Y	Shift solenoid G	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the shift solenoid G (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2Z	Shift solenoid F	•  Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).)		•  Inspect the shift solenoid F (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
2AA	Shift solenoid C	1GR	B+	•  Inspect the shift solenoid C (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		2GR	B+
		3GR	B+
		4GR	Below 1.0 V
		5GR	Below 1.0 V
		6GR	Below 1.0 V
2AB	Shift solenoid B	1GR	B+	•  Inspect the shift solenoid B (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		2GR	B+
		3GR	Below 1.0 V
		4GR	Below 1.0 V
		5GR	Below 1.0 V
		6GR	B+
2AC	—	—	—	—
2AD	ACC relay	Ignition switch OFF	Below 1.0 V	•  Inspect the ACC relay (See RELAY INSPECTION) •  Inspect the related wiring harness
		Ignition switch ACC	B+
2AE	Battery	Under any condition	B+	•  Inspect the Battery (See BATTERY INSPECTION) •  Inspect the related wiring harness
2AF	Shift solenoid A	1GR	Below 1.0 V	•  Inspect the shift solenoid A (See SOLENOID VALVE INSPECTION [SJ6A-EL]) •  Inspect the related wiring harness
		2GR	B+
		3GR	B+
		4GR	B+
		5GR	B+
		6GR	B+
2AG	—	—	—	—
2AH	—	—	—	—
2AI	Battery	Under any condition	B+	•  Inspect the Battery (See BATTERY INSPECTION) •  Inspect the related wiring harness

Inspection Using An Oscilloscope (Reference)

Turbine sensor (+)

•  TCM terminal: 1A

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•  Oscilloscope setting: 2 V/DIV (Y) 2 ms/DIV (X)

•  Measuring condition: Vehicle speed at 30 km/h {19 mph} (D position 1GR)

Vehicle speed (+)

•  TCM terminal: 1D

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•  Oscilloscope setting: 2.5 V/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: Vehicle speed at 30 km/h {19 mph} (D position 1GR)

Electric AT oil pump driver control unit

•  TCM terminal: 1Z

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•  Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)

•  Measuring condition: Idle

Electric AT oil pump driver control unit

•  TCM terminal: 1AF

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•  Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)

•  Measuring condition: Idle

TCC control solenoid control (-)

•  TCM terminal: 2D

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•  Oscilloscope setting: 50 mV/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: P, N position, Idle

Shift solenoid G control (-)

•  TCM terminal: 2L

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•  Oscilloscope setting: 50 mV/DIV (Y) 1ms/DIV (X)

•  Measuring condition: M position 1GR

Shift solenoid F control (-)

•  TCM terminal: 2O

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•  Oscilloscope setting: 100 mV/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: M position 5GR

TCC control solenoid control (+)

•  TCM terminal: 2Q

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•  Oscilloscope setting: 2.5 V/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: P, N position, Idle

Line pressure control solenoid control (+)

•  TCM terminal: 2R

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•  Oscilloscope setting: 2.5 V/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: P, N position, Idle

Shift solenoid G control (+)

•  TCM terminal: 2Y

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•  Oscilloscope setting: 2.5 V/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: M position 1GR

Shift solenoid F control (+)

•  TCM terminal: 2Z

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•  Oscilloscope setting: 2.5 V/DIV (Y) 1 ms/DIV (X)

•  Measuring condition: M position 5GR