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TCM INSPECTION [JA5A-EL] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513)

BME051718901201

## 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 | Diagnostic test mode | DLC terminal TAT | Ignition switch ON | Below 10 | • Inspect TAT terminal (See BATTERY INSPECTION) • Inspect related wiring harness
TAT terminal grounded | 0
1B | TFT sensor (GND) | TFT sensor | Constant | Continuity | • Inspect TFT sensor (See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR INSPECTION [JA5A-EL]) • Inspect related wiring harness
1C | GND | GND | Constant | Below 1.0 | • Inspect related wiring harness
1D | - | - | - | - | -
1E | HOLD indicator light | HOLD switch | HOLD switch OFF | B+ | • Inspect HOLD indicator light (See HOLD INDICATOR LIGHT INSPECTION [JA5A-EL]) • Inspect related wiring harness
HOLD switch ON | Below 1.0
1F | TFT sensor | TFT sensor | ATF temperature 20 °C {68 °F} | Approx. 1.55 | • Inspect TFT sensor (See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR INSPECTION [JA5A-EL]) • Inspect related wiring harness
ATF temperature 60 °C {140 °F} | Approx. 0.7
1G | K-LINE | 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 wiring harness
1H | O/D control | Cruise actuator | Ignition switch at ON position. | B+ | • Inspect cruise actuator (See CRUISE ACTUATOR INSPECTION) • Inspect related wiring harness
1I | - | - | - | - | -
1J | - | - | - | - | -
1K | Intermediate sensor | Intermediate sensor | Vehicle stop | 0 | • Inspect Intermediate sensor (See INTERMEDIATE SENSOR INSPECTION [JA5A-EL]) • Inspect related wiring 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 SPEED SENSOR (VSS) INSPECTION [JA5A-EL]) • Inspect related wiring 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 [JA5A-EL]) • Inspect related wiring 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) • Inspect related wiring harness
1Q | Fail-safe | HOLD indicator light | DTC outputted | 0-B+ | • Inspect related wiring harness
other | 0
1S | - | - | - | - | -
1T | TR switch (N position) | TR switch | N position | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Other positions, all ranges | 0
1U | Brake switch | Brake switch | Brake pedal depressed | B+ | • Inspect brake switch (See BRAKE SWITCH INSPECTION.) • Inspect related wiring harness
Brake pedal released | 0
1V | VSS (GND) | VSS | Constant | Below 1.0 | • Inspect related wiring harness
1W | TR switch (R range) | TR switch | R range | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Other ranges, all positions | 0
1X | Intermediate sensor (GND) | Intermediate sensor | Constant | Below 1.0 | • Inspect Intermediate sensor (See INTERMEDIATE SENSOR INSPECTION [JA5A-EL]) • Inspect related wiring harness
1Y | GND | GND | Constant | Below 1.0 | • Inspect related wiring harness
1Z | TR switch (D range) | TR switch | D range | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Other ranges, all positions | 0
1AA | TR switch (S range) | TR switch | S range | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Other ranges, all positions | 0
2A | - | - | - | - | -
2B | TR switch (P position) | TR switch | P position | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Other positions, all ranges | 0
2C | TR switch (L range) | TR switch | L range | B+ | • Inspect TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Other ranges, all positions | 0
2D | Neutral shift solenoid valve | Neutral shift solenoid valve | N position | 0 | • Inspect neutral shift solenoid valve (See SOLENOID VALVE INSPECTION [JA5A-EL]) • Inspect related wiring 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 [JA5A-EL]) • Inspect related wiring harness
2G | Reduction timing solenoid valve | Reduction timing solenoid valve | N position | 0 | • Inspect reduction timing solenoid valve (See SOLENOID VALVE INSPECTION [JA5A-EL]) • Inspect related wiring harness
D range | B+
2H | - | - | - | - | -
2I | HOLD switch | HOLD switch | Switch depressed | 0 | • Inspect HOLD switch (See HOLD SWITCH INSPECTION [JA5A-EL]) • Inspect related wiring harness
Switch released | B+
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 wiring 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 wiring harness
2N | - | - | - | - | -
2P | GND return (solenoid ground) | Solenoid valve | Constant | Continuity | • Inspect related wiring 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 [JA5A-EL]) • Inspect related wiring harness
TCC released (D range HOLD switch ON) | 0
2T | Shift solenoid B control | Shift solenoid B | N position | B+ | • Inspect shift solenoid B (See SOLENOID VALVE INSPECTION [JA5A-EL]) • Inspect related wiring 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 [JA5A-EL]) • Inspect related wiring 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 [JA5A-EL]) • Inspect related wiring harness
D position stall | 0
2W | Shift solenoid A | Shift solenoid A | N position | B+ | • Inspect shift solenoid A (See SOLENOID VALVE INSPECTION [JA5A-EL]) • Inspect related wiring 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 [JA5A-EL]) • Inspect related wiring harness
D range, HOLD switch OFF | 0
2Y | Pressure control solenoid control | Pressure control solenoid | N position | B+ | • Inspect pressure control solenoid (See SOLENOID VALVE INSPECTION [JA5A-EL]) • Inspect related wiring harness
D position stall | 0
2Z | Power supply | Main relay | Ignition switch ON | B+ | • Inspect main relay (See RELAY INSPECTION) • Inspect related wiring harness
Ignition switch OFF | 0
2AA | Power supply | Main relay | Ignition switch ON | B+ | • Inspect main relay (See RELAY INSPECTION) • Inspect related wiring 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