The Roof Opening Panel Does Not Open Or Close

E1 CHECK THE ROOF OPENING PANEL OPERATION
- Ignition ON.
- Attempt to operate the roof opening panel to the vent position.
Does the roof opening panel operate to the vent position?
- Yes : GO to E2
- No : GO to E3
E2 CHECK THE MOTOR/MODULE FOR INITIALIZATION
- Carry out the roof opening panel motor initialization procedure.
  REFER to: POWER ROOF OPENING PANEL INITIALIZATION .
Is the concern still present?
- Yes : GO to E3
- No : The system is operating normally at this time. The roof opening panel motor was not initialized.
E3 CHECK THE POWER WINDOWS
- Ignition ON.
- Verify the power windows operate.
Do the power windows operate?
- Yes : GO to E4
- No : Diagnose the accessory delay relay circuit.
  REFER to: GLASS, FRAMES AND MECHANISMS .

E4 CHECK THE ROOF OPENING PANEL MOTOR/MODULE VOLTAGE SUPPLY

Disconnect roof opening panel motor C921 .
Ignition ON.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C921-1		Ground
C921-2		Ground

Is each voltage within 0.2 volt of battery voltage?

Yes : GO to E5
No : VERIFY BCM fuses 27 (30A) and 23 (10A) are OK.
If OK, REPAIR the affected circuit for high resistance or an open.

If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION -- (EXCEPT HYBRID) to identify the cause of the circuit short.

E5 CHECK THE ROOF OPENING PANEL MOTOR GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C921-4		Ground

Is the resistance less than 3 ohms?

Yes : GO to E6
No : REPAIR the circuit.

E6 CHECK ROOF OPENING PANEL CONTROL SWITCH TO ROOF OPENING PANEL MOTOR CIRCUITS FOR AN OPEN

Measure:

Positive Lead	Measurement/Action	Negative Lead
C930-18		C921-5
C930-20		C921-6
C930-19		C921-7

Are the resistances less than 3 ohms?

Yes : GO to E7
No : REPAIR the circuit.

E7 CHECK THE ROOF OPENING PANEL CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement/Action	Negative Lead
C930-1		Ground

Is the resistance less than 3 ohms?

Yes : GO to E8
No : REPAIR the circuit.

E8 CHECK THE ROOF OPENING PANEL MOTOR/MODULE FOR CORRECT OPERATION
- Check the roof opening panel motor connector for:
  - Corrosion
  - Bent or pushed-out pins
- Connect all roof opening panel electrical connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
- Yes : INSTALL a new roof opening panel control switch.
  REFER to: OVERHEAD CONSOLE .
  
  TEST the system for normal operation. If the concern is still present, INSTALL a new roof opening panel motor/module. REFER to: ROOF OPENING PANEL MOTOR .
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.