[RC4A-El] Automatic Transmission/Transaxle

TCM INSPECTION [RC4A-EL]
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.















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 IF 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