B171C

B171C SWITCHING VALVE 1





DTC Logic

DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, RF, and determine trouble diagnosis order.






DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Operate soft top to fully open and fully close.
3. Select "Self Diagnostic Result" mode of "CONVERTIBLE ROOF" using CONSULT-III.
4. Check DTC.
Is DTC detected?
YES - Go to B171C.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK SWITCHING VALVE 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect hydraulic unit and 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 2.
NO - Repair open circuit or short to ground or short to power in harness or connectors.
2.CHECK SWITCHING VALVE 1 GROUND CIRCUIT
1. Check the continuity between hydraulic unit harness connector and soft top control unit harness connector.





2. Also check harness for short to power.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair open circuit or short to power in harness or connectors.
3.REPLACE HYDRAULIC UNIT
Replace hydraulic unit. Removal And Installation.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 4.
4.REPLACE SOFT TOP CONTROL UNIT
Replace soft top control unit. Removal And Installation.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 5.
5.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END