4Th Position Switch

4TH POSITION SWITCH

CONSULT Reference Value in Data Monitor Mode








Diagnosis Procedure


1. CHECK CAN COMMUNICATION LINE

Perform the self-diagnosis. Scan Tool Testing and Procedures.
Is any malfunction in the CAN communication indicated in the results?
YES- Check CAN communication line.
NO- GO TO 2.

2. CHECK 4TH POSITION SWITCH CIRCUIT

With CONSULT
1.Turn ignition switch "ON".
2.Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT.
3.Read out "OD CONT SW".
Check the signal of the overdrive control switch is indicated properly.





Without CONSULT
1.Turn ignition switch "ON". (Do not start engine)





2.Check voltage between A/T shift selector connector terminal and ground.





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

3. CHECK 4TH POSITION SWITCH

1.Turn ignition switch "OFF".
2.Disconnect A/T shift selector connector.





3.Check continuity between A/T shift selector connector terminals.





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 5 and A/T shift selector connector terminal 1.
- Harness for short or open between A/T shift selector connector terminal 2 and ground.
OK or NG
OK- GO TO 5.
NG- Repair or replace damaged parts.

5. CHECK COMBINATION METER

Check the combination meter. Reading and Clearing Diagnostic Trouble Codes.
OK or NG
OK-INSPECTION END
NO- Repair or replace damaged parts.