#
TCM INSPECTION [JA5AX-EL]

id051705800300

## Terminal Voltage Table (Reference)

Note

• Use the ground of terminal 1C and 1Y of the TCM when measuring terminal voltage, as an error may occur when connecting the negative circuit tester to ground.

Terminal | Signal | Connected to | Test Condition | Voltage (V) | Action
--- | --- | --- | --- | --- | ---
1A | - | - | - | - | -
1B | TFT sensor (GND) | TFT sensor | Constant | Continuity | • Inspect TFT sensor (See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR INSPECTION [JA5AX-EL].) • Inspect related harness
1C | GND | GND | Constant | Below 1.0 | • Inspect related harness
1D | - | - | - | - | -
1E | - | - | - | - | -
1F | TFT sensor | TFT sensor | ATF temperature 20 °C {68 °F} | Approx. 1.55 | • Inspect TFT sensor (See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR INSPECTION [JA5AX-EL].) • Inspect related harness
ATF temperature 60 °C {140 °F} | Approx. 0.7
1G | - | - | - | - | -
1H | - | - | - | - | -
1I | - | - | - | - | -
1J | - | - | - | - | -
1K | Intermediate sensor | Intermediate sensor | Vehicle stop | 0 | • Inspect Intermediate sensor (See INTERMEDIATE SENSOR INSPECTION [JA5AX-EL].) • Inspect related harness
Vehicle speed at 20 km/h {12.4 mph} or more | Above 1.0
1M | VSS | VSS | Vehicle stop | 0 | • Inspect VSS (See VEHICLE SPEEDOMETER SENSOR (VSS) INSPECTION [JA5AX-EL].) • Inspect related harness
Vehicle speed at 20 km/h {12.4 mph} or more | Above 1.0
1N | Input/turbine speed sensor | Input/turbine speed sensor | Vehicle stop | 0 | • Inspect Input/turbine speed sensor (See INPUT/TURBINE SPEED SENSOR INSPECTION [JA5AX-EL].) • Inspect related harness
Vehicle speed at 20 km/h {12.4 mph} or more | Above 1.0
1P | Back-up power supply | Battery | Constant | B+ | • Inspect battery (See BATTERY INSPECTION [L8, LF, L3, L3 Turbo].) • Inspect related harness
1Q | - | - | - | - | -
1S | Down switch | Down switch | Down shift at M range | 0 | • Inspect selector lever component (See SELECTOR LEVER COMPONENT INSPECTION.)
Other | B+
1T | TR switch (N position) | TR switch | N position | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5AX-EL].) • Inspect related harness
Other positions, all ranges | 0
1U | Brake switch | Brake switch | Brake pedal depressed | B+ | • Inspect brake switch (See BRAKE SWITCH INSPECTION.) • Inspect related harness
Brake pedal released | 0
1V | VSS (GND) | VSS | Constant | Below 1.0 | • Inspect related harness
1W | TR switch (R range) | TR switch | R range | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5AX-EL].) • Inspect related harness
Other ranges, all positions | 0
1X | Intermediate sensor (GND) | Intermediate sensor | Constant | Below 1.0 | • Inspect Intermediate sensor (See INTERMEDIATE SENSOR INSPECTION [JA5AX-EL].) • Inspect related harness
1Y | GND | GND | Constant | Below 1.0 | • Inspect related harness
1Z | TR switch (D range) | TR switch | D range | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5AX-EL].) • Inspect related harness
Other ranges, all positions | 0
1AA | M range switch | M range switch | M range | 0 | • Inspect selector lever component (See SELECTOR LEVER COMPONENT INSPECTION.)
Other | B+
2A | - | - | - | - | -
2B | TR switch (P position) | TR switch | P position | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5AX-EL].) • Inspect related harness
Other positions, all ranges | 0
2C | Up switch | Up switch | Up shift at M range | 0 | • Inspect selector lever component (See SELECTOR LEVER COMPONENT INSPECTION.)
Other | B+
2D | Neutral shift solenoid valve | Neutral shift solenoid valve | N position | 0 | • Inspect neutral shift solenoid valve (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
R position | B+
2E | - | - | - | - | -
2F | Input/turbine speed sensor (GND) | Input/turbine speed sensor | Constant | 0 | • Inspect Input/turbine speed sensor (See INPUT/TURBINE SPEED SENSOR INSPECTION [JA5AX-EL].) • Inspect related harness
2G | Reduction timing solenoid valve | Reduction timing solenoid valve | N position | 0 | • Inspect reduction timing solenoid valve (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
D range | B+
2H | - | - | - | - | -
2I | - | - | - | - | -
2J | CAN_L | PCM | Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible. Carry out inspection according to DTCs. | - | • Inspect related harness
2K | - | - | - | - | -
2M | CAN_H | PCM | Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible. Carry out inspection according to DTCs. | - | • Inspect related harness
2N | - | - | - | - | -
2P | GND return (solenoid ground) | Solenoid valve | Constant | Continuity | • Inspect related harness
2Q | - | - | - | - | -
2S | TCC solenoid valve control | TCC solenoid valve | D range TCC ON (60 km/h {37 mph} or more) | B+ | • Inspect TCC solenoid valve (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
TCC released (M range, 1GR-4GR) | 0
2T | Shift solenoid B control | Shift solenoid B | N position | B+ | • Inspect shift solenoid B (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
D range, 4GR gear | 0
2U | High clutch solenoid valve | High clutch solenoid valve | N position | 0 | • Inspect high clutch duty solenoid valve (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
When shifting 1-2 in D range | B+
2V | 2-4 brake solenoid valve | 2-4 brake duty solenoid valve | N position | B+ | • Inspect 2-4 brake solenoid valve (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
D position stall | 0
2W | Shift solenoid A | Shift solenoid A | N position | B+ | • Inspect shift solenoid A (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
D range, 3GR gear | 0
2X | Shift solenoid C control | Shift solenoid C | N position | B+ | • Inspect shift solenoid C (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
D range | 0
2Y | Pressure control solenoid control | Pressure control solenoid | N position | B+ | • Inspect pressure control solenoid (See SOLENOID VALVE INSPECTION [JA5AX-EL].) • Inspect related harness
D position stall | 0
2Z | Power supply | Main relay | Ignition switch ON | B+ | • Inspect main relay (See RELAY INSPECTION.) • Inspect related harness
Ignition switch OFF | 0
2AA | Power supply | Main relay | Ignition switch ON | B+ | • Inspect main relay (See RELAY INSPECTION.) • Inspect related harness
Ignition switch OFF | 0

## Inspection Using An Oscilloscope (Reference)

Input/turbine speed sensor signal

• TCM terminal: 1N (+)-2F (-)

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

• Measuring condition: Turbine speed at 700 rpm, N position

Intermediate sensor signal

• TCM terminal: 1K (+)-1X (-)

• Oscilloscope setting: 4 V/DIV (Y) 0.2 ms/DIV (X)

• Measuring condition: Vehicle speed at 40 km/h {25 mph}, 4GR

Vehicle speedometer sensor signal

• TCM terminal: 1M (+)-1V (-)

• Oscilloscope setting: 4 V/DIV (Y) 1 ms/DIV (X)

• Measuring condition: Vehicle speed at 40 km/h {25 mph}

Pressure control solenoid signal

• TCM terminal: 2Y (+)-2P (-)

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

• Measuring condition: Idle after warm-up

2-4 brake solenoid valve signal

• TCM terminal: 2V (+)-2P (-)

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

• Measuring condition: Idle after warm-up

High clutch solenoid valve signal

• TCM terminal: 2U (+)-2P (-)

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

• Measuring condition: Idle after warm-up

TCC solenoid valve signal (lock up off)

• TCM terminal: 2S (+)-2P (-)

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

• Measuring condition: Idle after warm-up

TCC solenoid valve signal (lock up on)

• TCM terminal: 2S (+)-2P (-)

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

• Measuring condition: Drive the vehicle with lock up