Ford Explorer Quiz
Body and Paint

Diagnosis and Testing - Sunroof Panel

In this manual: Body and Paint
General Information — 41Chassis — 173Powertrain — 250Electrical — 303Body and Paint — 331
~23min read

Diagnostic Trouble Code (DTC) Chart

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

The sunroof motor must be initialized when repairs are performed on any part of the sunroof system or when the sunroof motor, glass, assembly, or air deflector has been removed or replaced for any reason.
Refer to: Power Sunroof Initialization (Sunroof 501-17, General Procedures).


Diagnostic Trouble Code Chart


Module Trouble Code Description Action

Symptom Charts

Symptom Chart: Sunroof Panel

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Condition Possible Sources Action
Sunroof Panel Leaks Refer to Pinpoint Test
  • GO to Pinpoint Test B
Sunroof Panel Does Not Open or Close Refer to Pinpoint Test
  • GO to Pinpoint Test E
Sunroof panel does not latch flush from any position
  • Sunroof panel improperly adjusted
  • Mechanism out of time
  • ALIGN the sunroof glass panel.
    Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
One-Touch Open Function Does Not Work
  • Refer to Pinpoint Test
  • GO to Pinpoint Test G

Symptom Chart: NVH

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Condition Possible Sources Action
Sunroof Panel Has Excessive Wind Noise Refer to Pinpoint Test
  • GO to Pinpoint Test A
Sunroof Panel Rattles Refer to Pinpoint Test
  • GO to Pinpoint Test C
Sunroof Panel Makes Noise During Operation Refer to Pinpoint Test
  • GO to Pinpoint Test D

Symptom Chart: Sunshade

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Condition Possible Sources Action
Sunshade does not open or close Refer to Pinpoint Test
  • GO to Pinpoint Test F

Pinpoint Tests


DIAGNOSTIC TEST A: EXCESSIVE WIND NOISE FROM THE SUNROOF

Normal Operation and Fault Symptoms

The sunroof motor must be initialized when repairs are performed on any part of the sunroof system or when the sunroof motor, glass, assembly, or air deflector has been removed or replaced for any reason. Refer to: Power Sunroof Initialization (Sunroof 501-17, General Procedures).

During normal operation, the sunroof closes tightly and evenly against the roof, preventing wind noise. Any change in alignment or lack of sealing will cause wind noise.

Possible Sources

  • Sunroof panel misaligned
  • Sunroof glass seals

Visual Inspection and Pre-checks

  • Roof Opening Seals
A1 CHECK THE SUNROOF GLASS PANEL SEALS
  • Check the sunroof glass panel seals for:
    • looseness
    • cracking
    • pinching
    • obstructions

Are the seals OK?
Yes GO to A2
No REPAIR as necessary.
A2 CHECK THE SUNROOF GLASS PANEL ALIGNMENT
  • The ignition is on.
  • Open and close the sunroof glass panel.
  • Check the sunroof glass panel alignment after closing.

Is the alignment correct?
Yes Test drive the vehicle. If wind noise is still present, ALIGN the sunroof glass panel for more precise tolerance within specification.
Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
No ALIGN the sunroof glass panel.
Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
DIAGNOSTIC TEST B: SUNROOF PANEL LEAKS

Normal Operation and Fault Symptoms

When the sunroof glass panel is fully closed, it is flush with the roof panel. The sunroof seal provides insulation against adverse weather conditions such as rain and wind, preventing them from entering the cabin. A damaged, deformed, or improperly installed seal cannot effectively seal the glass. The sunroof trough assembly and drain hoses provide a path for water to drain from the opening panel. Damaged or clogged drain hoses or trough assembly will allow water to collect and possibly leak into the cabin.

Possible Sources

  • Sunroof glass panel misaligned
  • Roof Opening Panel Drain Hoses
  • Sunroof glass seals
  • Sunroof panel frame damaged
  • Sunroof glass panel improperly positioned

Visual Inspection and Pre-checks

  • Roof Opening Seals
B1 CHECK CUSTOMER USE OF THE SUNROOF PANEL WHEN PARKING
  • Make sure the customer parks with the sunroof panel in the correct closed position.

Does the customer park with the sunroof panel closed?
Yes GO to B2
No Instruct the customer to REFER to the Owner's Literature for correct sunroof panel operation.
B2 CHECK SUNROOF PANEL ALIGNMENT
  • Make sure the sunroof glass panel is centered and flush with the roof line.

Is the sunroof panel correctly aligned?
Yes GO to B3
No ALIGN the sunroof panel.
Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
B3 CHECK THE CONDITION OF THE WEATHERSTRIP
  • Check the sunroof weatherstrip for position, deformation, cracks, tears, or looseness.

Is the sunroof weatherstrip in good condition and undamaged?
Yes GO to B4
No INSTALL a new sunroof glass panel.
Refer to: Fixed Sunroof Glass Panel (501-17 Sunroof, Removal and Installation).
B4 CHECK THE CONDITION OF THE WATER TROUGH
  • Inspect the rear sunroof opening panel drain trough for damage. Inspect the drain pan and guides for damage and/or proper attachment and function.

Is the water trough in good condition?
Yes GO to B5
No REPAIR or INSTALL a new sunroof opening panel drain trough assembly, as necessary.
REFER TO: Drain Trough Assembly (501-17 Sunroof Opening Panel, Removal and Installation).
B5 CHECK THE DRAIN HOSES
  • Make sure all drain hoses are connected and free of cracks, cuts, pinches or obstructions.

Are all drain hoses present and connected correctly?
Yes GO to B6
No REPAIR or INSTALL new drain hoses.
B6 CHECK THE DRAIN HOSE FLOW
  • With the panel open, slowly pour water into the drain trough area and make sure the same amount of water exits the vehicle at the bottom of the front and rear pillars.
  • Check the drain hoses for obstructions by blowing compressed air through the drain outlets in the drain trough area, then repeat the water test.

Do the drain hoses drain correctly?
Yes INSPECT other areas of the vehicle that may cause water to enter the roof, such as the windshield or parcel shelf, if equipped, and REPAIR as necessary. Check the system for normal operation. If the condition still exists, GO to B7.
No LOWER the headliner and CHECK the drain hoses for proper routing. REPAIR or INSTALL new drain hoses, as necessary.
B7 CHECK THE SUNROOF OPENING PANEL FRAME CONDITION
  • Inspect the sunroof opening panel frame for damage that may cause improper seating of the sunroof opening panel seal.

Is the sunroof opening panel frame in good condition?
Yes INSTALL a new sunroof opening panel glass.
REFER TO: Sunroof Glass (501-17 Sunroof Opening Panel, Removal and Installation).
No REPAIR or REPLACE the sunroof opening panel frame, as necessary.
REFER TO: Sunroof Opening Panel Frame (501-17 Sunroof Opening Panel, Removal and Installation).
DIAGNOSTIC TEST C: SUNROOF PANEL IS DIRTY

Normal Operation and Fault Symptoms

When the sunroof glass is fully closed, it is flush with the roof panel. All components must be properly secured. The sunroof system consists of many components that require specified torque values and correct installation to avoid NVH concerns. Over time, components may loosen or become damaged, fasteners may loosen, insulation material may wear, and foreign objects may accumulate in the sunroof frame. One or more of these conditions may cause rattling in the sunroof panel system.

Possible Sources

  • Sunroof glass panel misaligned
  • Roof Opening Panel Lift Mechanisms
  • Sunroof Opening Panel Guides
  • Sunroof Opening Panel Drain Troughs and Guides
  • Sunroof Opening Panel Shade (Sun Shade)
  • Sunroof Opening Panel Assembly

Visual Inspection and Pre-checks

  • Sunroof Opening Panel Glass
  • Roof Opening Panel Lift Mechanisms
  • Sunroof Drain Trough
  • Sunroof Opening Panel Deflector Assembly
  • Sunroof Opening Panel Seal
  • Sunroof Opening Panel Shade (Sun Shade)
C1 CHECK THE SUNROOF OPENING PANEL GLASS OPERATION
  • Check the sunroof glass during operation.

Is the sunroof glass loose?
Yes ALIGN the sunroof panel.
Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
No GO to C2
C2 CHECK THE SUNROOF OPENING PANEL GUIDES
  • Open the sunroof glass.
  • Inspect the guides for obstructions or signs of damage.

Are the tracks in good condition?
Yes GO to C3
No REMOVE any obstructions. REPAIR the sunroof opening panel guides, as necessary.
C3 CHECK THE DRAIN TROUGHS AND GUIDES
  • Inspect the drain trough and trough guides for loose attachments or obstructions.

Is the drain trough securely installed and free of foreign material?
Yes GO TO C4
No REMOVE all foreign material from the drain trough and securely INSTALL it.
C4 CHECK THE SUNROOF OPENING PANEL SHADE (SUN SHADE)
  • Check that the shade (sun shade) is installed correctly.

Is the shade (sun shade) installed correctly?
Yes GO to C5
No INSTALL the shade (sun shade) correctly.
C5 CHECK THE SUNROOF OPENING PANEL
  • Make sure the sunroof opening panel frame, drain troughs and wiring harnesses are free of obstructions and damage, and securely attached.

Is the roof opening panel OK?
Yes The system operates normally.
No REPAIR as necessary.
DIAGNOSTIC TEST D: SUNROOF PANEL MAKES NOISE DURING OPERATION

Normal Operation and Fault Symptoms

When the roof opening panel glass closes, it should do so quietly and smoothly. The sunroof system is made up of many components that require specific torque values and correct installation to avoid NVH concerns. Over time, components may loosen or become damaged, attachments may loosen, sound insulation material may wear, and foreign objects may collect in the roof opening panel frame. One or more of these conditions may cause noise in the roof opening panel system.

Possible Sources

  • Sunroof glass panel misaligned
  • Sunroof Opening Panel Guides
  • Sunroof Opening Panel Shade (Sun Shade)
  • Roof Opening Panel Motor

Visual Inspection and Pre-checks

  • Roof Opening Obstructions
  • Roof Opening Panel Lift Mechanisms
  • Sunroof Opening Panel Shade (Sun Shade)
  • Roof Opening Panel Motor
D1 CHECK THE SUNROOF OPENING PANEL GLASS FOR OBSTRUCTIONS OR DAMAGE
  • Inspect the roof opening panel for obstructions and damage.

Are there any obstructions and/or damage?
Yes REMOVE all obstructions. REPAIR the roof opening panel if necessary.
No GO to D2
D2 CHECK THE SUNROOF OPENING PANEL GLASS OPERATION
  • Check the sunroof glass during operation.

Is the sunroof opening panel loose or misaligned?
Yes ALIGN the sunroof panel.
Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
No GO to D3
D3 CHECK THE SUNROOF OPENING PANEL GUIDES
  • Open the sunroof glass.
  • Inspect the sunroof opening panel guides for obstructions and damage.

Are the sunroof opening panel guides in good condition?
Yes GO to D4
No REMOVE all obstructions. REPAIR any damage, as necessary.
D4 CHECK THE SUNROOF OPENING PANEL SHADE (SUN SHADE)
  • Check the sunroof opening panel shade (sun shade) for correct movement.

Does the roof opening panel shield move correctly?
Yes GO to D5
No REPAIR or INSTALL a new sunroof opening panel shade (sun shade), as necessary.
REFER TO: Sunroof Opening Panel Shade (501-17 Sunroof Opening Panel, Removal and Installation).
D5 CHECK THE SUNROOF OPENING PANEL MOTOR
  • Gain access to the sunroof opening panel motor.
  • Open the sunroof opening panel.

Is the motor making excessive noise?
Yes INSTALL a new sunroof opening panel motor/module.
REFER TO: Sunroof Opening Panel Motor (501-17 Sunroof Opening Panel, Removal and Installation).
No ALIGN the sunroof glass panel.
Refer to: Sunroof Panel Alignment (501-17 Sunroof, General Procedures).
DIAGNOSTIC TEST E: SUNROOF PANEL DOES NOT OPEN, CLOSE, OR VENT

For schematics and connector information, refer to Wiring Diagrams Cell 101.

Normal Operation and Fault Symptoms

The sunroof opening panel motor receives battery voltage at all times from BCM fuse F24 (30A) on circuit SBP24 (VT-RD), and receives ignition voltage (including accessory delay) from BCM fuse F2 (10A) on circuit CBP02 (GN). The sunroof opening panel motor and switch are grounded through circuit GD349 (BK/GY). When the sunroof opening panel open switch is pressed, a ground signal is sent to the sunroof opening panel motor through circuit CPR31 (VT/BN), which causes the sunroof opening panel to open. When the sunroof opening panel close switch is pressed, a ground signal is sent to the sunroof opening panel motor through circuit CPR40 (YE/OG), which causes the sunroof opening panel to close.

If the communication circuit between the sunroof motor and the shade (sun shade) motor is open or shorted, the sunroof motor will fully close the sunroof only once, after which it will not operate. Also, if the communication circuit is open or shorted, the shade (sun shade) motor will fully open, then operate only between fully open and the front fixed glass panel. The communication circuit is between the motors and is not for diagnosis.

Possible Sources

  • Fuses
  • Wiring, Terminals or Connectors
  • Sunroof Motor/Module Assembly
  • Roof Opening Panel Switch
  • Sunroof Panel Harness

Visual Inspection and Pre-checks

  • BCM Fuse F2 (10A)
  • BCM Fuse F24 (30A)
E1 CHECK THE POWER WINDOW OPERATION
  • The ignition is on.
  • Try to operate the power windows.

Do the power windows operate normally?
Yes GO to E2
No Perform diagnostics on the auxiliary delay relay circuit.
Refer to: Glass, Frames and Mechanisms (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing).
or
E2 CHECK SUNSHADE OPERATION
  • Press and hold the sunshade open switch until the sunshade is fully open.
  • Press and hold the sunshade close switch until the sunshade is fully closed.

Does the sunshade operate correctly?
Yes GO to E3
No If the sunshade does not operate at all, GO to Pinpoint Test F. If the sunshade opens and then closes only to the fixed glass panel and stops, GO to E8.
E3 CHECK ROOF OPENING PANEL GLASS OPERATION
  • Check the operation of the roof opening panel glass.
    • Press and release the glass open switch. The glass should fully open in one-touch open mode. If not, press and hold the glass open switch to fully open the glass.
    • Press and release the glass close switch. The glass should fully close in one-touch close mode. If not, press and hold the glass close switch to fully close the glass.

Does the glass operate correctly?
Yes The roof opening panel is now operating correctly.
No • If the glass does not open or close in one-touch mode but opens and closes with press and hold,
Refer to: Power Sunroof Initialization (501-17 Sunroof, General Procedures). • If the glass does not open or close with the switch pressed and held, GO to E4.
E4 CHECK ROOF OPENING PANEL MOTOR VOLTAGE CIRCUITS
  • Ignition OFF.
  • Disconnect the sunroof module (jumper harness) C921.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-1 Ground
    C921-2 Ground

Is the voltage greater than 11 volts?
Yes GO to E5
No CHECK that BCM fuses F23 (10A) and F27 (30A) are OK.
If the fuses are OK, REPAIR the faulty circuit for high resistance or open circuit.
If the fuses are not OK, REFER to the wiring diagrams to determine the cause of the short circuit.
E5 CHECK ROOF OPENING PANEL GROUND CIRCUITS
  • Ignition OFF.
  • Disconnect the roof opening panel switch C930.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-4 Ground

    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C930-6 Ground

Is the resistance less than 3 ohms?
Yes GO to E6
No REPAIR the faulty circuit for high resistance or open circuit.
E6 CHECK CIRCUIT CPR40 (YE/YE) FOR OPEN OR SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-6 C930-4

    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C921-6 Ground

Is the resistance between C921-6 and C930-4 less than 3 ohms, and greater than 10,000 ohms between C921-6 and ground?
Yes GO to E7
No REPAIR the circuit.
E7 CHECK CIRCUIT CPR31 (VT/BN) FOR OPEN OR SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-5 C930-5

    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C921-5 Ground

Is the resistance between C921-5 and C930-5 less than 3 ohms, and greater than 10,000 ohms between C921-5 and ground?
Yes GO to E8
No REPAIR the circuit.
E8 CHECK ROOF OPENING PANEL JUMPER HARNESS
  • Disconnect the sunroof module (jumper harness) C921, if connected.
  • Disconnect the roof opening panel jumper harness connectors at the sunshade motor and the sunroof glass motor.
  • CHECK the jumper harness between the vehicle harness C921, the sunshade motor connector and the sunroof glass motor connector for an open or short circuit.

Is the sunroof panel jumper harness OK?
Yes GO to E9
No REPAIR the circuit.
E9 CHECK SUNROOF MOTOR/MODULE FOR PROPER OPERATION
  • Ignition OFF.
  • Disconnect all sunroof system connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Connect all sunroof system connectors. Make sure they are installed and locked correctly.
  • Operate the system and verify that the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not describe this concern, INSTALL a new roof opening panel switch.
Refer to: Roof Opening Panel Control Switch (501-17 Roof Opening Panel, Removal and Installation).
CHECK the system for proper operation. If the concern is still present, INSTALL a new sunroof motor/module. Refer to: Roof Opening Panel Motor (Roof Opening Panel 501-17, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector.
DIAGNOSTIC TEST F: SUNSHADE DOES NOT OPEN OR CLOSE

For schematics and connector information, refer to Wiring Diagrams Cell 101.

Normal Operation and Fault Symptoms

The sunshade motor is continuously supplied with battery voltage from BCM fuse F24 (30A) on circuit SBP24 (VT-RD), and with ignition voltage (including auxiliary delay) from BCM fuse F2 (10A) on circuit CBP02 (GN). The roof opening panel motor and switch are grounded through circuit GD349 (BK/GY). When the sunshade open switch is pressed, a signal is sent to the sunshade through circuit CPR86 (GY/BN), which causes the sunshade to open. When the sunshade close switch is pressed, a signal is sent to the sunshade motor through circuit CPR85 (GN/WH), which causes the sunshade to close.

If the communication circuit between the sunroof motor and the sunshade motor is open or shorted, the sunroof motor will fully close the panel only once, after which it will not operate. Also, if the communication circuit is open or shorted, the sunshade motor will fully open, then operate only between fully open and the front fixed glass panel.

Possible Sources

  • Fuse(s)
  • Wiring, Terminals or Connectors
  • Roof Opening Panel Sunshade Motor/Module Assembly
  • Sunroof switch panel
  • Sunroof Panel Harness

Visual Inspection and Pre-checks

  • BCM Fuse F2 (10A)
  • BCM Fuse F24 (30A)
F1 CHECK SUNSHADE OPERATION
  • The ignition is on.
  • Press and hold the sunshade open switch until the sunshade is fully open.
  • Press and hold the sunshade close switch until the sunshade is fully closed.
  • Press and release the sunshade close switch for one-touch open. The sunshade should open to the fixed glass panel.

Does the sunshade operate correctly?
Yes GO to F3
No If the sunshade does not operate at all or moves in only one direction, GO to F2.
If the sunshade opens and then closes only to the front of the fixed glass panel and stops, GO to F7.
If the sunshade opens and closes but one-touch operation does not function, GO to Precision Test G.
F2 CHECK POWER WINDOW OPERATION
  • The ignition is on.
  • Try to operate the power windows.

Do the power windows operate?
Yes GO to F3
No Perform the additional time delay relay circuit diagnosis.
REFER TO: Glass, Frames and Mechanisms (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing).
F3 CHECK THE SUNSHADE MOTOR POWER CIRCUITS
  • Ignition OFF.
  • Disconnect the sunroof module (jumper harness) C921.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-1 Ground
    C921-2 Ground

Is the voltage greater than 11 volts?
Yes GO to F4
No CHECK that BCM fuses F2 (10A) and F24 (30A) are OK.
If the fuses are OK, REPAIR the faulty circuit for high resistance or an open.
If the fuses are not OK, REFER to the Wiring Diagrams Manual to determine the cause of the short circuit.
F4 CHECK THE SUNROOF PANEL GROUND CIRCUITS
  • Ignition OFF.
  • Disconnect the roof opening panel switch C930.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-4 Ground

    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C930-6 Ground

Is the resistance less than 3 ohms?
Yes GO to F5
No REPAIR the circuit.
F5 CHECK CIRCUIT CPR85 (GN/WH) FOR AN OPEN OR A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-9 C930-11

    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C921-9 Ground

Is the resistance between C921-9 and C930-11 less than 3 ohms; and greater than 10,000 ohms between C921-9 and ground?
Yes GO to F6
No REPAIR the circuit.
F6 CHECK CIRCUIT CPR86 (GY/BN) FOR AN OPEN OR A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C921-8 C930-13

    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C921-8 Ground

Is the resistance between C921-8 and C930-13 less than 3 ohms; and greater than 10,000 ohms between C921-8 and ground?
Yes GO to F7
No REPAIR the circuit.
F7 CHECK THE SUNROOF JUMPER HARNESS
  • Disconnect the sunroof panel jumper harness module C921, if equipped.
  • Disconnect the sunroof panel jumper harness connectors at the sunshade motor and the sunroof motor.
  • CHECK the vehicle harness wiring between the vehicle harness C921 and the sunshade motor and the sunroof glass panel motor for an open or a short.

Is the sunroof panel jumper harness OK?
Yes GO to F8
No INSTALL a new sunroof panel connector harness between the vehicle harness and both sunroof panel motors.
F8 CHECK THE SUNROOF PANEL FOR PROPER OPERATION
  • Ignition OFF.
  • Disconnect all sunroof system connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Connect all sunroof system connectors. Make sure they are installed and locked correctly.
  • Operate the system and verify that the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If the TSBs do not describe this concern, INSTALL a new sunroof switch.
REFER TO: Sunroof Control Switch (501-17 Sunroof, Removal and Installation).
CHECK the system for proper operation. If the concern remains, INSTALL a new sunroof motor/sunshade module. REFER TO: Sunroof Motor (501-17 Sunroof, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector.
DIAGNOSTIC TEST G: ONE-TOUCH OPEN/CLOSE DOES NOT WORK

For schematics and connector information, refer to Wiring Diagrams Cell 101.

Normal Operation and Fault Symptoms

When the sunroof open switch is pressed to the second detent position, a signal is sent to the sunroof motor through circuit CPR31 (VT/BN), which causes the sunroof to perform a one-touch open operation. When the sunroof is open and the sunroof close switch is pressed to the second detent position, a signal is sent to the sunroof motor through circuit CPR40 (YE/OG), which causes the sunroof to perform a one-touch close operation. If the sunshade is closed when the sunroof motor is commanded to perform a one-touch open operation, the motors will communicate and the sunshade motor will automatically perform a one-touch open operation, then the sunroof motor will perform a one-touch open operation.

If the communication circuit between the sunroof motor and the sunshade motor is open or shorted, the sunroof motor will only operate to fully close the sunroof 1 time and then will not operate; and the sunshade motor will open to the front of the fixed glass panel, then operate between fully open and the front of the fixed glass panel.

When the sunshade open switch is pressed to the second detent position, a signal is sent to the sunshade through circuit CPR86 (GY/BN), which causes the sunshade to perform a one-touch open operation. When the sunshade close switch is pressed, a signal is sent to the sunshade through circuit CPR85 (GN/WH), which causes the sunshade to close. If the sunshade is closed or fully open and a one-touch operation is requested, the sunshade will stop at the front of the fixed glass panel, and a second one-touch request is required to fully open or close the sunshade. If the sunroof is open when the sunshade motor is commanded to perform a one-touch close operation, the motors will communicate and the sunroof motor will automatically perform a one-touch close operation, then the sunroof motor will perform a one-touch close operation.

If the communication circuit between the sunroof motor and the sunshade motor is open or shorted, the sunroof motor will fully close the panel only once, after which it will not operate. Also, if the communication circuit is open or shorted, the sunshade motor will fully open, then operate only between fully open and the front fixed glass panel.

Possible Sources

  • Sunroof Panel Initialization (Sunroof or Sunshade Motor)
  • Sunroof Motor/Module Assembly
  • Sunroof Assembly Shield (Sunshade)
  • Roof Opening Panel Switch

Visual Inspection and Pre-checks
G1 CHECK THE SUNROOF PANEL MOTORS FOR INITIALIZATION
  • Perform the sunroof motor and sunshade motor initialization procedure.
    REFER TO: Power Sunroof Initialization (501-17 Sunroof, General Procedures).
  • Operate the system with one-touch control.

Is the concern still present?
Yes INSTALL a new sunroof switch.
REFER TO: Sunroof Control Switch (501-17 Sunroof, Removal and Installation).
CHECK the system for proper operation. If the concern remains, INSTALL a new sunroof motor/module. REFER TO: Sunroof Motor (501-17 Sunroof, Removal and Installation).
No The system is currently operating normally. The sunroof panel motor has not been initialized.

Test yourself

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