Scan Tool Testing and Procedures
Scan Tool DataAs 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, 5TH, N, R) This parameter is indicated actual gear position.
Throttle Position (%) It indicates throttle valve opening ratio sent from ECM through CAN communication line.
Input Shaft Rev (RMP) It indicates input shaft revolution computed by reference pulses coming from input shaft speed sensor on transmission case.
Output Shaft Rev (RMP) It indicates output shaft revolution computed by reference pulses coming from output shaft speed sensor on transmission case.
Vehicle Speed 1 (Km/h) This parameter is competed by output shaft speed sensor and 4L/N switch on TCM. Gear shift schedule relate this parameter.
Battery Voltage (V) It indicates battery voltage read by TCM as analog input signal by TCM.
ATF Temp (°C) It indicates ATF temperature detected by signal from transmission fluid temperature sensor-A installed in valve body.
Accel Effective Pos (%) It indicates accelerator pedal opening ratio detected by signal through CAN communication line fed from ECM.
Press Cont 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 (RMP) This parameter indicates slipping rotation in the torque converter (difference between input shaft rotation and engine rotation)
ATF Temp 2 (°C) It indicates ATF temperature detected by signal from transmission fluid temperature sensor-B installed in valve body.
Engine Speed (RPM) It indicates engine speed computed by signal through CAN communication line fed from ECM.
Coolant Temp (°C) It indicates engine coolant temperature detected by signal through CAN communication line fed from ECM.
Target Engine Torque (Nm) It indicates target engine torque detected by signal through CAN communication line fed from ECM.
Engine Torque (Nm) It indicates actual engine torque detected by signal through CAN communication line fed from ECM.
MIL Request (ON, OFF) 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.
Fuel Cut Flag ON: Signal which inform that fuel cut is operating. OFF: Signal which inform that fuel cut is not operating.
O/D Off Switch (ON, OFF) Inputted signal from 4 position switch in select lever assembly. ON: Shift selector lever to other below range. OFF: Shift selector lever to P, N and D range.
Trans Range (P, R, N, D, 3, L) It indicates transmission range according to transmission range switch signal.
Shift Sol A Con / 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 Sol B Con / 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 (ON, OFF) Inputted signal from 4WD low switch on transfer case. ON: Transfer gear position is 4L OFF: Transfer gear position is 4H
D 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
A/C Switch (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 through CAN communication line fed from ECM. ON: Brake pedal depressed OFF: Brake pedal released
TCC Sol Duty (%) Electric current value ration between electric current value being outputted from TCM to TCC solenoid and maximum value can be outputted by TCM.
Vehicle Speed 2 (Km/h) It indicates actual vehicle speed detected by signal through CAN communication line fed from ECM.
Press Cont Sol B (%) Electric current value ratio between electric current value being outputted from TCM to pressure control solenoid-B and maximum value can be outputted by TCM.
Press Cont Sol C (%) Electric current value ratio between electric current value being outputted from TCM to pressure control solenoid-C and maximum value can be outputted by TCM.
Shift Sol E Con / MON (ON, OFF) COM-ON: ON command being outputted to shift solenoid-E. COM-OFF: OFF command not being outputted to shift solenoid-E. MON-ON: Electricity being passed to shift solenoid-E. MON-OFF: Electricity not being passed to shift solenoid-E.