B1744

B1744 HYDRAULIC STATE 20





Description
There are 22 states in hydraulic system. Hydraulic system is controlled using combination of these 22 states and, at the same time, open and close operations of retractable hard top system are performed interlocking with other retractable hard top system components. For the detail, refer to System Diagram System Description, "HYDRAULIC SYSTEM CONTROL FUNCTION : System Description".




DTC Logic

DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, refer to Retractable Hard Top Control Unit, and determine trouble diagnosis order.






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Operate retractable hard top to fully open and fully close.
3. Check "Self Diagnostic Result" with CONSULT-III.
Is DTC detected?
YES - Go to B1744.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK RETRACTABLE HARD TOP SYSTEM COMPONENT PARTS
Check retractable hard top component parts as bellow deformation, looseness, rattle, interference with other parts, and pinched foreign materials .
- Hydraulic system: Refer to Exploded View.
- Trunk lid: Refer to Exploded View.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace malfunctioning part.
2.CHECK TRUNK ROOM LAMP SWITCH
Check trunk room lamp switch. Refer to Component Function Check.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace malfunctioning part.
3.CHECK TRUNK ROOM LAMP SWITCH SIGNAL
Check retractable hard top control unit "Data Monitor" mode using CONSULT-III.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.CHECK TRUNK ROOM LAMP SWITCH CIRCUIT
1. Disconnect trunk room lamp switch connector, BCM connector trunk closure sub-control unit connector and retractable hard top control unit connector.
2. Check continuity between retractable hard top control unit harness connector and trunk room lamp switch harness connector.





3. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - Check trunk lid auto closure system. Refer to Closure Function.
NO - Repair harness or connector.
5.CHECK HYDRAULIC PUMP POWER SUPPLY RELAY
Check hydraulic pump power supply relay. Refer to Hydraulic Pump Motor Power Supply Relay.
Is the inspection result normal?
YES - Check intermittent incident. Refer to Intermittent Incident.
NO - Replace hydraulic unit. Refer to Removal and Installation.