Diagnostic Procedure
- CHECK INPUT SIGNAL
With CONSULT-II
- Start engine.
- Select TCM INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.
- Read out the value of VHCL/S SE.MTR while driving.
Check the value changes according to driving speed.
Without CONSULT-II
- Start engine.
- Check voltage between TCM terminal 40 and ground while driving at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.
Voltage: Voltage varies between less than 1V and more than 4.5V.
OK or NG
- OK: GO TO 3.
- NG: GO TO 2.
- DETECT MALFUNCTIONING ITEM
Check the following items:
- Vehicle speed sensor and ground circuit for vehicle speed sensor
Refer to METERS AND GAUGES .
- Harness for short or open between TCM and vehicle speed sensor (Main harness)
OK or NG
- OK: GO TO 3.
- NG: Repair or replace damaged parts.
- Vehicle speed sensor and ground circuit for vehicle speed sensor
- CHECK DTC
Perform DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
OK or NG
- OK: INSPECTION END
- NG: GO TO 4.
- CHECK TCM INSPECTION
- Perform TCM input/output signal inspection.
- If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
- OK: INSPECTION END
- NG: Repair or replace damaged parts.