Scan Tool Testing and Procedures

Scan Tool Data


TCM


As the data values given in the following table are standard values estimated on the basis of values obtained from the normally operating vehicles by using a scan tool, use them as reference value. Even when the vehicle is in good condition, there may be cases where the checked value does not fall within each specified data range. Therefore, judgment as abnormal should not be made by checking with these data alone.

Also, condition in the following table that can be checked by the scan tool are those detected by TCM and output from TCM as commands and there may be cases where the automatic transmission or actuator is not operating (in the condition) as indicated by the scan tool.










Scan Tool Data Definitions

Gear Position (1ST, 2ND, 3RD, 4TH, N, R)
This parameter is indicated actual gear position.
Throttle Position (%)
Throttle valve opening ratio sent from ECM on CAN communication line.
Input Shaft Rev (RPM)
Input shaft revolution computed by reference pulses coming from input shaft speed sensor on transmission case.
Output Shaft Rev (RPM)
Output shaft revolution computed by reference pulses coming from output shaft speed sensor on transmission case.
Vehicle Speed (Km/h)
This parameter is competed by output shaft speed sensor and 4L/N switch (if equipped) on TCM. Gear shift schedule relate this parameter.
Battery Voltage (V)
Battery voltage read by TCM as analog input signal by TCM.
ATF Temperature (°C)
ATF temperature detected by signal from transmission fluid temperature sensor installed in valve body.
TCC Solenoid Duty (%)
Electric current value ration between electric current value being outputted from TCM to TCC pressure control solenoid and maximum value can be outputted by TCM.
Pressure Control Sol (%)
Electric current value ratio between electric current value being outputted from TCM to pressure control solenoid-A and maximum value can be outputted by TCM.
Slip RPM (RPM)
This parameter indicates slipping rotation in the torque converter (difference between input shaft rotation and engine rotation).
Engine Speed (RPM)
Engine speed computed by signal on CAN communication line fed from ECM.
ECT (°C)
Engine coolant temperature detected by signal on CAN communication line fed from ECM.
MIL Request (ON, OFF) (E-OBD model)
ON: Signal which TCM requires combination meter to turn ON malfunction indicator lamp.
OFF: Signal which TCM does not require combination meter to turn ON malfunction indicator lamp.
3 Position (O/D Off) Sw (ON, OFF)
Inputted signal from "3" position switch in selector lever assembly.
ON: Shift selector lever to "3" range
OFF: Shift selector lever to other above range
Transaxle Range (P, R, N, D, 2, L)
It indicates transmission range according to transmission range sensor signal.
Shift Solenoid A (Com) / (Mon) (ON, OFF)
COM-ON: ON command being outputted to shift solenoid-A.
COM-OFF: OFF command not being outputted to shift solenoid-A.
MON-ON: Electricity being passed to shift solenoid-A.
MON-OFF: Electricity not being passed to shift solenoid-A.
Shift Solenoid B (Com) / (Mon) (ON, OFF)
COM-ON: ON command being outputted to shift solenoid-B.
COM-OFF: OFF command not being outputted to shift solenoid-B.
MON-ON: Electricity being passed to shift solenoid-B.
MON-OFF: Electricity not being passed to shift solenoid-B.
4WD-Low Switch (if equipped) (ON, OFF)
Inputted signal from 4L/N switch on transfer case.
ON: Transfer gear position is 4L or N
OFF: Transfer gear position is 4H
Range Signal (P/N range, D range)
ON: Signal which TCM require ECM to increase idle speed
OFF: Signal which TCM does not require ECM to increase idle speed
Air Conditioner Signal (ON, OFF)
ON: Signal which inform that air conditioner compressor is turned ON.
OFF: Signal which inform that air conditioner compressor is turned OFF.
Brake Switch (ON, OFF)
Brake light switch position detected by signal on CAN communication line fed from ECM.
ON: Brake pedal depressed
OFF: Brake pedal released
Accel Actual Position (%)
Accelerator pedal opening ratio detected by signal on CAN communication line fed from ECM.