Overdrive Control Switch

OVERDRIVE CONTROL SWITCH

CONSULT-III Reference Value in Data Monitor Mode:

Diagnosis Procedure

1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to TM-204, "CONSULT-III Function (TRANSMISSION)". Consult-III Function (Transmission)
Is any malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to TM-213. U1000
NO >> GO TO 2.

2.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT

With CONSULT-III
1. Turn ignition switch "ON".
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Read out "OD CONT SW".





Check the signal of the overdrive control switch is indicated properly.

Without CONSULT-III
1. Turn ignition switch "ON". (Do not start engine)
2. Check voltage between A/T control device connector terminal and ground.





OK or NG
OK >> GO TO 5.
NG >> GO TO 3.

3.CHECK OVERDRIVE CONTROL SWITCH
1. Turn ignition switch "OFF".
2. Disconnect A/T control device connector.
3. Check continuity between A/T control device connector M156 terminals 7 and 8.





OK or NG
OK >> GO TO 4.
NG >> Repair or replace overdrive control switch.

4.DETECT MALFUNCTIONING ITEM
Check the following. If any items are damaged, repair or replace damaged parts.
^ Harness for short or open between combination meter connector terminal 20 and A/T control device connector terminal 7.
^ Harness for short or open between A/T control device connector terminal 8 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.

5.CHECK COMBINATION METER
Check the combination meter. Refer to MWI-4, "METER SYSTEM: System Description". Meter System
OK or NG
OK >> INSPECTION END
NO >> Repair or replace damaged parts.