Diagnosis Procedure

VEHICLE SPEED SIGNAL


Diagnosis Procedure

1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select "TCM INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Read out the value of "VHCL/S SE-MTR" while driving. Check the value changes according to driving speed.





Without CONSULT-III
1. Start engine.





2. Check voltage between TCM connector terminal and ground.





OK or NG
OK - GO TO 3.
NG - GO TO 2.
2.DETECT MALFUNCTIONING ITEM
Check the following items:
- Combination meter. Combination Meters System Description .
- Harness for short or open between TCM and combination meter.
OK or NG
OK - GO TO 3.
NG - Repair or replace damaged parts.
3.CHECK DTC
Perform DTC Confirmation Procedure .
OK or NG
OK - INSPECTION END
NG - GO TO 4.
4.CHECK TCM
1. Check TCM input/output signal. TCM Terminal And Reference Value .
2. 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.