Scan Tool Testing and Procedures

Scan Tool Data

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 values. 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 transaxle or actuator is not operating (in the condition) as indicated by the scan tool.







Scan Tool Data Definitions:

Input shaft revolution (RPM)
It indicates input shaft revolution computed by reference pulses coming from input shaft speed sensor on transmission case.

Output shaft revolution (RPM)
It indicates output shaft revolution computed by reference pulses coming from output shaft speed sensor on transmission case.

Battery voltage (V)
It indicates battery voltage read by TCM as analog input signal by TCM.

ATF temperature (°C, °F)
It indicates ATF temperature detected by signal from transmission fluid temperature sensor installed in valve body.

Pressure control Sol (pressure control solenoid valve) (%)
Electric current value ratio between electric current value being outputted from TCM to solenoid and maximum value can be outputted by TCM.

Vehicle speed (km/h, mile/h)
Vehicle speed computed by reference pulses coming from output shaft speed sensor on transaxle case.

Gear position (P, R, N, D, 3, 2 or L)
This parameter is indicated actual gear position.

Throttle position (%)
It indicates throttle valve opening ratio sent from ECM through CAN communication line.

Accel actual position (accelerator pedal actual position) (%)
It indicates accelerator pedal opening ratio detected by signal through CAN communication line fed from ECM.

Engine speed (RPM)
It indicates engine speed computed by signal through CAN communication line fed from ECM.

Coolant temperature (engine coolant temperature) (°C, °F)
It indicates engine coolant temperature detected by signal through CAN communication line fed from ECM.

Cruise control signal (ON, OFF)
ON: Signal which inform that lock-up inhibit signal from ECM is turned ON.
OFF: Signal which inform that lock-up inhibit signal from ECM is turned OFF.

Transaxle range (P, R, N, D, 3, 2 or L)
It indicates transmission range according to transmission range switch signal.

"3" position switch (ON, OFF)
Inputted signal from "3" position switch in select lever.
ON: Shift selector lever to "3" or "2" range
OFF: Shift selector lever to other above range

Shift solenoid A (COM) (command signal of shift solenoid valve - A) (ON, OFF)
ON: ON command being outputted to shift solenoid valve-A.
OFF: ON command not being outputted to shift solenoid valve-A.

Shift solenoid B (COM) (command signal of shift solenoid valve - B) (ON, OFF)
ON: ON command being outputted to shift solenoid valve-B.
OFF: ON command not being outputted to shift solenoid valve-B.

TCC solenoid (COM) (command signal of torque converter clutch solenoid valve) (ON, OFF)
ON: ON command being outputted to TCC solenoid valve.
OFF: ON command not being outputted to TCC solenoid valve.

Shift solenoid A (Mon) (monitor signal of shift solenoid valve - A) (ON, OFF)
ON: Electricity being passed to shift solenoid valve-A.
OFF: Electricity not being passed to shift solenoid valve-A.

Shift solenoid B (Mon) (monitor signal of shift solenoid valve - B) (ON, OFF)
ON: Electricity being passed to shift solenoid valve-B.
OFF: Electricity not being passed to shift solenoid valve-B.

TCC solenoid (Mon) (monitor signal of torque converter clutch solenoid valve) (ON, OFF)
ON: Electricity being passed to TCC solenoid valve.
OFF: Electricity not being passed to TCC solenoid valve.

Brake switch (ON, OFF)
Brake light switch position detected by signal through CAN communication line fed from ECM.
ON: Brake pedal depressed
OFF: Brake pedal released

MIL request (ON, OFF)
ON: Signal which TCM requires combination meter to turn on MIL.
OFF: Signal which TCM does not require combination meter to turn on MIL.