#
TCM INSPECTION

BHE051318901W01

## Terminal Voltage Table (Reference)

  Note

  • Use the ground of terminal 2M and 2Q 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 | Battery back up supply | Battery | Constant | B+ | • Inspect related harness
1B | - | - | - | - | -
1C | - | - | - | - | -
1D | TR switch (P position) | TR switch | P position | Below 1.0 | • Inspect TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION) • Inspect related harness
Other positions, all ranges | B+
1E | M range switch | M range switch | M range | Below 1.0 | • Inspect Selector lever component (See SELECTOR LEVER COMPONENT INSPECTION) • Inspect related harness
Other positions, all ranges | B+
1F | - | - | - | - | -
1G | Brake switch | Brake switch | Brake pedal depressed | B+ | • Inspect Brake switch (See BRAKE SWITCH INSPECTION) • Inspect related harness
Brake pedal released | Below 1.0
1H | - | - | - | - | -
1I | - | - | - | - | -
1J | - | - | - | - | -
1K | - | - | - | - | -
1M | - | - | - | - | -
1N | - | - | - | - | -
1P | - | - | - | - | -
1Q | - | - | - | - | -
1S | - | - | - | - | -
1T | - | - | - | - | -
1U | - | - | - | - | -
1V | 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
1W | Shift up/Shift down signal (Steering shift switch) | Steering shift switch | Up switch operated (Steering shift switch) | 2.0 | • Inspect steering shift switch (See STEERING SHIFT SWITCH INSPECTION) • Inspect related harness
Down switch operated (Steering shift switch) | 2.5
Others | 4.0
1Y | 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
2A | Oil pressure switch B | Oil pressure switch B | 2GR or 4GR | Below 1.0 | • Inspect oil pressure switch B (See OIL PRESSURE SWITCH INSPECTION (AT)) • Inspect related harness
Others | Above 10
2B | TR switch (N position) | TR switch | N position | B+ | • Inspect TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION) • Inspect related harness
Other positions, all ranges | Below 1.0
2C | TR switch (R position) | TR switch | R position | Below 1.0 | • Inspect TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION) • Inspect related harness
Other ranges, all positions | B+
2D | Down switch (Selector lever component) | Down switch (Selector lever component) | Shift down (M range) | Below 1.0 | • Inspect Selector lever component (See SELECTOR LEVER COMPONENT INSPECTION) • Inspect related harness
Other ranges, all positions | B+
2E | TR switch (D range) | TR switch | D range | Below 1.0 | • Inspect TR switch (See TRANSMISSION RANGE (TR) SWITCH INSPECTION) • Inspect related harness
Other ranges, all positions | B+
2F | Oil pressure switch C | Oil pressure switch C | 3GR or 4GR | Below 1.0 | • Inspect oil pressure switch C (See OIL PRESSURE SWITCH INSPECTION (AT)) • Inspect related harness
Others | Above 10
2G | Turbine sensor | Turbine sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect turbine sensor (See TURBINE SENSOR INSPECTION) • Inspect related harness
2H | Oil pressure switch F | Oil pressure switch F | R position | Below 1.0 | • Inspect oil pressure switch F (See OIL PRESSURE SWITCH INSPECTION (AT)) • Inspect related harness
Others | Above 10
2I | Up switch (Selector lever component) | Up switch (Selector lever component) | Shift up (M range) | Below 1.0 | • Inspect Selector lever component (See SELECTOR LEVER COMPONENT INSPECTION) • Inspect related harness
Other ranges, all positions | B+
2J | TFT sensor | TFT sensor | ATF temperature 20°C {68°F} | Approx. 1.55 | • Inspect TFT sensor (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION) • Inspect related harness
ATF temperature 40°C {104°F} | Approx. 1.08
ATF temperature 60°C {140°F} | Approx. 0.7
2K | Vehicle speed | VSS | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect TFT sensor (See VEHICLE SPEED SENSOR (VSS) INSPECTION) • Inspect related harness
2M | System GND | GND | Constant | Continuity | • Inspect related harness
2N | TFT sensor GND | TFT sensor | Constant | Continuity | • Inspect related harness
2P | Shift solenoid F control | Shift solenoid F | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid F (See SOLENOID VALVE INSPECTION) • Inspect related harness
2Q | System GND | GND | Constant | Continuity | • Inspect related harness
2S | Shift solenoid B control | Shift solenoid B | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid B (See SOLENOID VALVE INSPECTION) • Inspect related harness
2T | - | - | - | - | -
2U | GND return (solenoid ground) | Solenoid valve | Constant | Continuity | • Inspect related harness
2V | Shift solenoid C control | Shift solenoid C | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid C (See SOLENOID VALVE INSPECTION) • Inspect related harness
2W | TCC solenoid control | TCC solenoid | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid C (See SOLENOID VALVE INSPECTION) • Inspect related harness
2X | Pressure control solenoid control | Pressure control solenoid | N position | B+ | • Inspect pressure control solenoid (See SOLENOID VALVE INSPECTION) • Inspect related harness
D range stall | Below 1.0
2Y | Shift solenoid A control | Shift solenoid A | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid C (See SOLENOID VALVE INSPECTION) • Inspect related harness
2Z | Power supply | Main relay | Ignition switch ON | B+ | • Inspect main relay • Inspect related harness
Ignition switch OFF | Below 1.0
2AA | Power supply | Main relay | Ignition switch ON | B+ | • Inspect main relay • Inspect related harness
Ignition switch OFF | Below 1.0

## Inspection Using An Oscilloscope (Reference)

### Turbine sensor

  • TCM terminal: 2G (+)-2M (-)
  • Oscilloscope setting: 5 V/DIV (Y) 250 microseconds/DIV (X)
  • Measuring condition: Vehicle speed at 20 km/h {12 mph} (M range 1GR)

### Vehicle speed

  • TCM terminal: 2K (+)-2M (-)
  • Oscilloscope setting: 5 V/DIV (Y) 2.5 ms/DIV (X)
  • Measuring condition: Vehicle speed at 20 km/h {12 mph} (M range 1GR)

### Shift solenoid F control

  • TCM terminal: 2P (+)-2U (-)
  • Oscilloscope setting: 5 V/DIV (Y) 10 ms/DIV (X)
  • Measuring condition: P, N position, Idle

### Shift solenoid B control

  • TCM terminal: 2S (+)-2U (-)
  • Oscilloscope setting: 5 V/DIV (Y) 10 ms/DIV (X)
  • Measuring condition: P, N position, Idle

### Shift solenoid C control

  • TCM terminal: 2V (+)-2U (-)
  • Oscilloscope setting: 5 V/DIV (Y) 10 ms/DIV (X)
  • Measuring condition: P, N position, Idle

### TCC solenoid control (TCC on)

  • TCM terminal: 2W (+)-2M (-)
  • Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
  • Measuring condition: D range, TCC on (60 km/h {37 mph} or more)

### TCC solenoid control (TCC off)

  • TCM terminal: 2W (+)-2M (-)
  • Oscilloscope setting: 5 V/DIV (Y) 5 ms/DIV (X)
  • Measuring condition: P, N position, Idle

### Shift solenoid A control

  • TCM terminal: 2Y (+)-2U (-)
  • Oscilloscope setting: 5 V/DIV (Y) 10 ms/DIV (X)
  • Measuring condition: D range, 4GR