Overdrive Control Switch Circuit Check

Overdrive Control Switch Circuit Check

SDT Reference Value in Data List Mode






Diagnosis Procedure

1. CHECK CAN COMMUNICATION LINE

Perform "DTC check". Refer to [SDT Function (AT)] Scan Tool Testing and Procedures.

Is any malfunction in the CAN communication indicated in the results?
YES
Check CAN communication line. Refer to [Meter System: System Description] Automatic Transmission/Transaxle.
NO
GO TO 2.

2. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT

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






Without SDT
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 OVERDRIVE CONTROL 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 20 and A/T shift selector connector terminal 7.
- Harness for short or open between A/T shift selector 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 Meter System Description.

OK or NG
OK
INSPECTION END
NO
Repair or replace damaged parts.