Diesel Data: Automotive Repair

Pinpoint Test E: The Roof Opening Panel Does Not Open Or Close




Roof Opening Panel

Pinpoint Test E: The Roof Opening Panel Does Not Open or Close

Refer to Wiring Diagram Set 101, Roof Opening Panel for schematic and connector information. Diagrams By Number

NOTE: The roof opening panel motor must be initialized when repairs are carried out on any part of the roof opening panel system, including:
- whenever the roof opening panel motor has been removed from the roof opening panel system.
- whenever the roof opening panel glass has been removed from the roof opening panel system.
- whenever the roof opening panel assembly has been removed from the vehicle.
- whenever a new roof opening panel motor has been installed.
- whenever a new roof opening panel glass has been installed.
- whenever a new roof opening panel assembly has been installed.

Refer to Roof Opening Panel Motor Initialization Programming and Relearning.

Normal Operation

The roof opening panel uses an integrated motor and module to operate the roof opening panel. A new roof opening panel motor/module is installed as an assembly.

The roof opening panel motor/module and switch receive voltage from the Central Junction Box (CJB) when the ignition is in the RUN position. The roof opening panel switch supplies voltage signals to the roof opening panel motor/module to operate the roof opening panel.

This pinpoint test is intended to diagnose the following:

- Fuse(s)
- Wiring, terminals or connectors
- Roof opening panel switch
- Roof opening panel motor/module

PINPOINT TEST E: THE ROOF OPENING PANEL DOES NOT OPEN OR CLOSE

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E1 CHECK THE ROOF OPENING PANEL SWITCH

- Ignition OFF.
- Disconnect: Roof Opening Panel Switch C912.
- Carry out the roof opening panel switch component test.
Refer to Sunroof / Moonroof Switch for component testing.

- Is the roof opening panel switch OK?

Yes
GO to E2.

No
INSTALL a new roof opening panel switch. TEST the system for normal operation.

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E2 CHECK VOLTAGE TO THE ROOF OPENING PANEL SWITCH

- Ignition ON.
- Measure the voltage between roof opening panel switch C912-1, circuit CBP24 (VT/GN), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to E3.

No
VERIFY Central Junction Box (CJB) fuse 24 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. Diagrams By Number

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E3 CHECK VOLTAGE TO THE ROOF OPENING PANEL MOTOR/MODULE

- Ignition OFF.
- Disconnect: Roof Opening Panel Motor/Module C921.
- Ignition ON.
- Measure the voltage between roof opening panel module C921-3, circuit CBP24 (VT/GN) and C921-6, circuit SBP35 (BU/RD), harness side and ground.




- Are the voltages greater than 10 volts?

Yes
GO to E4.

No
VERIFY CJB fuse 35 (20A) is OK. If OK, REPAIR the circuit in question. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. Diagrams By Number

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E4 CHECK THE ROOF OPENING PANEL MOTOR/MODULE GROUND CIRCUIT FOR AN OPEN

- Ignition OFF.
- Measure the resistance between roof opening panel module C921-2, circuit GD145 (BK/BU), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to E5.

No
REPAIR the circuit. TEST the system for normal operation.

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E5 CHECK THE ROOF OPENING PANEL CONTROL CIRCUIT FOR AN OPEN

- Measure the resistance between roof opening panel switch C912-3, circuit CPR38 (WH/BU), and roof opening panel motor/module C921-4, circuit CPR38 (WH/BU) harness side.




- Is the resistance less than 5 ohms?

Yes
GO to E6.

No
REPAIR the circuit. TEST the system for normal operation.

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E6 CHECK THE ROOF OPENING PANEL CONTROL CIRCUIT FOR AN OPEN

- Measure the resistance between roof opening panel switch C912-5, circuit CPR40 (YE/OG), and roof opening panel motor/module C921-10, circuit CPR40 (YE/OG), harness side.




- Is the resistance less than 5 ohms?

Yes
GO to E7.

No
REPAIR the circuit. TEST the system for normal operation.

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E7 CHECK THE ROOF OPENING PANEL CONTROL CIRCUIT FOR AN OPEN

- Measure the resistance between roof opening panel switch C912-4, circuit CPR31 (VT/BN), and roof opening panel motor/module C921-5, circuit CPR31 (VT/BN), harness side.




- Is the resistance less than 5 ohms?

Yes
GO to E8.

No
REPAIR the circuit. TEST the system for normal operation.

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E8 CHECK THE ROOF OPENING PANEL MOTOR/MODULE FOR CORRECT OPERATION

- Inspect the roof opening panel motor/module electrical connector.
- Check for:
- corrosion.
- bent pins.
- pushed-out pins.
- Connect the roof opening panel motor/module connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new roof opening panel motor/module. REFER to Roof Opening Panel Motor Roof Opening Panel Motor. TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation.

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