Overdrive Control Switch

OVERDRIVE CONTROL SWITCH

Component Function Check


1. CHECK O/D INDICATOR LAMP FUNCTION

Check O/D OFF indicator lamp turns ON for approx. 2 seconds when ignition switch turns ON.
Is the inspection results normal?
YES- GO TO 2.
NO- Go to "Diagnosis Procedure" OD Off Indicator Lamp.

2. CHECK O/D SWITCH FUNCTION

1.Shift the selector lever to "D" position.
2.Check that O/D OFF indicator lamp turns ON/OFF when sport mode switch is operated.
Is the inspection results normal?
YES- INSPECTION END
NO- Go to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect A/T shift selector connector.
3.Turn ignition switch ON.
4.Check the voltage between A/T shift selector harness connector terminals.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 3.

2. CHECK OVERDRIVE CONTROL SWITCH

Check overdrive control switch. Refer to "Component Inspection (Overdrive Control Switch)" .
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace the malfunctioning parts.

3. CHECK GROUND CIRCUIT

Check the continuity between A/T shift selector harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace the malfunctioning parts.

4. CHECK CIRCUIT BETWEEN COMBINATION METER AND A/T SHIFT SELECTOR (PART 1)

1.Turn ignition switch OFF.
2.Disconnect combination meter connector.
3.Check the continuity between combination meter harness connector terminal and A/T shift selector harness connector terminal.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace the malfunctioning parts.

5. CHECK CIRCUIT BETWEEN COMBINATION METER AND A/T SHIFT SELECTOR (PART 2)

Check the continuity between combination meter harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace the malfunctioning parts.

6. CHECK COMBINATION METER INPUT SIGNAL

1.Connect all of the disconnected connectors.
2.Turn ignition switch ON.
3.Select "Data Monitor" in "METER/M&A".
4.Select "O/D OFF SW".
5.Check that "O/D OFF SW" turns ON/OFF when overdrive control switch is operated. Refer to "Reference Value" Type B.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace combination meter. Refer to "Removal and Installation" Type B.


Component Inspection (Overdrive Control Switch)


1. CHECK OVERDRIVE CONTROL SWITCH






Check the continuity between wires of selector lever knob (1)





Is the inspection result normal?
YES- INSPECTION END
NO- Replace the selector lever knob. Refer to "Removal and Installation" Removal And Installation.