B1779

DTC Logic


DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, Related Tests, Information And Procedures, and determine trouble diagnosis order.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Select "Self Diagnostic Result" mode of "CONVERTIBLE ROOF" using CONSULT.
3.Check DTC.
Is DTC detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK HYDRAULIC PUMP TEMPERATURE SENSOR POWER SUPPLY CIRCUIT-I

1.Turn ignition switch OFF.
2.Disconnect hydraulic unit harness connector.
3.Turn ignition switch ON.
4.Check the voltage between hydraulic unit harness connector and ground.





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

2. CHECK HYDRAULIC PUMP TEMPERATURE SENSOR POWER SUPPLY CIRCUIT-II

1.Turn ignition switch OFF.
2.Disconnect soft top control unit harness connector.
3.Check the continuity between hydraulic unit harness connector and soft top control unit harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- Replace soft top control unit. Removal And Installation.
NO- Repair open circuit, short to ground or short to power in harness or connectors.

3. CHECK HYDRAULIC PUMP TEMPERATURE SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect soft top control unit harness connector.
3.Check the continuity between hydraulic unit harness connector and soft top control unit harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair open circuit, short to ground or short to power in harness or connectors.

4. REPLACE HYDRAULIC UNIT

Replace hydraulic unit. Removal And Installation.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 5.

5. CHECK INTERMITTENT INCIDENT

Intermittent Incident Regular Grade.
- INSPECTION END