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 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 CVT or actuator is not operating (in the condition) as indicated by the scan tool.
NOTE:
The following scan tool data related to CVT can be checked only by communicating with TCM.
Scan Tool Data Definitions:
Vehicle Speed (km/h / mph)
This parameter indicates vehicle speed calculated by TCM based on secondary pulley speed sensor signal.
Engine Speed (rpm)
This parameter indicates engine speed information received from ECM.
Primary Pulley Speed (rpm)
This parameter indicates primary pulley speed detected by primary pulley speed sensor.
Secondary Pulley Speed (rpm)
This parameter indicates secondary pulley speed detected by secondary pulley speed sensor.
Torque converter Slip (rpm)
This parameter indicates the slip speed of the torque converter according to the difference between engine speed and the secondary pulley speed.
Primary Oil Pres (MPa)
This parameter indicates line pressure detected by primary pressure sensor.
Secondary Oil Pres (MPa)
This parameter indicates secondary pressure detected by secondary pressure sensor.
CVTF Temperature (°C, °F)
This parameter indicates CVT fluid temperature detected CVT fluid temperature sensor.
ECT (Engine Coolant Temperature, °C, °F)
This parameter indicates engine coolant temperature information received from ECM.
Battery Voltage (V)
This parameter indicates battery positive voltage inputted through CVT relay to TCM.
Throttle Position (%)
This parameter indicates throttle position information received from ECM.
Accel Actual Position (%)
This parameter indicates accelerator pedal opening ratio information from ECM.
Gear Actual Ratio
This parameter indicates current gear ratio calculated by TCM based on primary pulley speed and secondary pulley speed.
Lock Up Solenoid (Com) (Command, mA)
This parameter indicates control current value that TCM outputs to TCC solenoid valve.
Lock Up Solenoid (Mon) (Monitor, mA)
This parameter indicates current value that flows to TCC solenoid valve.
Line Press Solenoid (Com) (Command, mA)
This parameter indicates control current value that TCM outputs to line pressure control solenoid valve.
Line Press Solenoid (Mon) (Monitor, mA)
This parameter indicates current value that flows to line pressure control solenoid valve.
Secondary Solenoid (Com) (Command, mA)
This parameter indicates control current value that TCM outputs to secondary pressure control solenoid valve.
Secondary Solenoid (Mon) (Monitor, mA)
This parameter indicates current value that flows to secondary pressure control solenoid valve.
Torque Converter Clutch (Release / Slip / Connect)
This parameter indicates the state of the torque converter clutch according to the difference between engine speed and the secondary pulley speed.
Open: The difference between engine speed and secondly pulley speed is more than specified speed.
Conclude: The speed of engine and secondly pulley is completely corresponding.
Slip: TCC is opening or it is concluding.
Manual Gear Position (deactive, 1st, 2nd, 3rd, 4th, 5th, 6th)
This parameter indicates the state of manual mode shift position detected by TCM.
Shift Down SW (ON/OFF)
This parameter indicates the states of shift-down switch.
Shift Up SW (ON/OFF)
This parameter indicates the states of shift-up switch.
Manual Mode SW (ON/OFF)
This parameter indicates the states of manual mode switch.
Transaxle Range (P, R, N, D)
This parameter indicates the state of each range switch in transmission range sensor.
ABS Active (ON/OFF)
This parameter indicates ABS status.
A/C Comp Clutch (ON/OFF)
This parameter indicates air conditioner compressor clutch information received from ECM.
ON: A/C compressor clutch engaged.
OFF: A/C compressor clutch disengaged.
Brake Switch (ON/OFF)
This parameter indicates brake light switch information received from ECM.
ON: Brake light switch is ON. (Brake pedal depressed)
OFF: Brake light switch is OFF. (Brake pedal released)
Paddle Up SW (ON/OFF)
This parameter indicates the states of paddle-up switch "+".
Paddle Down SW (ON/OFF)
This parameter indicates the states of paddle-down switch "-".
Switching Solenoid (Mon) (ON/OFF)
This parameter indicates the state of lock-up / select switching solenoid valve.
Switching Solenoid (Com) (ON/OFF)
This parameter indicates the output state of TCM to lock-up / select switching solenoid valve.