Overdrive Control Switch

OVERDRIVE CONTROL SWITCH





CONSULT-II Reference Value

Diagnostic Procedure
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT-87, SELF-DIAGNOSTIC RESULT MODE. With Manufacturer's Scan Tool
Is any malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to DTC U1000 CAN COMMUNICATION LINE.
NO >> GO TO 2.

2. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT

With CONSULT-II
1. Turn ignition switch ON.
2. Select ECU INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.








3. Read out OD CONT SW. Check the signal of the overdrive control switch is indicated properly.

Without CONSULT-II
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 How to Proceed With Trouble Diagnosis.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.