B1742

B1742 HYDRAULIC STATE 18





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, System Description.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, 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" of "RETRACTABLE HARD TOP" using CONSULT-III.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
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: Exploded View.
- Trunk lid: 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. Trunk Room Lamp Switch.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace malfunctioning part.
3.CHECK TRUNK ROOM LAMP SWITCH SIGNAL
Check "TR ROOM LAMP SW" in "DATA MONITOR" mode of "RETRACTABLE HARD TOP" 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 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. Open/Closure Function.
NO - Repair harness or connector.
5.CHECK HYDRAULIC PUMP POWER SUPPLY RELAY
Check hydraulic pump power supply relay. Hydraulic Pump Motor Power Supply Relay.
Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace hydraulic unit. Removal And Installation.