Lincoln Aviator: Roof Opening Panel / Diagnosis and Testing - Roof Opening Panel
DTC Chart: Roof Opening Panel
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
BCM Module DTC Chart
|
DTC
|
Description
|
Action
|
|
B12F4:12
|
Vehicle Speed Output: Circuit Short To Battery
|
GO to Pinpoint Test A
|
|
B12F4:14
|
Vehicle Speed Output: Circuit Short To Ground or Open
|
GO to Pinpoint Test A
|
|
-
|
All other BCM Diagnostic Trouble Codes (DTCs)
|
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
|
Symptom Charts
Symptom Chart: Roof Opening Panel
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
|
Condition
|
Possible Sources
|
Actions
|
|
The roof opening panel leaks
|
Refer to the Pinpoint Test
|
|
|
The roof opening panel does not open or close
|
Refer to the Pinpoint Test
|
|
|
The one-touch open feature is inoperative
|
Refer to the Pinpoint Test
|
|
|
The roof opening panel does not close with vehicle moving
|
Refer to the Pinpoint Test
|
|
Symptom Chart: NVH
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
|
Condition
|
Possible Sources
|
Actions
|
|
The roof opening panel has excessive wind noise
|
Refer to the Pinpoint Test
|
|
|
The roof opening panel rattles
|
Refer to the Pinpoint Test
|
|
|
Roof opening panel is noisy during operation
|
Refer to the Pinpoint Test
|
|
Symptom Chart: Shield
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
|
Condition
|
Possible Sources
|
Actions
|
|
The Shield Does Not Open or Close
|
Refer to the Pinpoint Test
|
|
Pinpoint Tests
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PINPOINT TEST A : THE ROOF OPENING PANEL DOES NOT CLOSE WITH VEHICLE MOVING
Refer to Wiring Diagrams Cell 101 for schematic and connector information.
Normal Operation and Fault Conditions
The roof opening panel motor must be initialized
when repairs are carried out on any part of the roof opening panel
system or when the roof opening panel motor, glass, assembly, or air
deflector has been removed or replaced for any reason.REFER to: Power Roof Opening Panel Initialization (501-17 Roof Opening Panel, General Procedures).
When the vehicle is in motion the BCM sends a PWM
signal to the roof opening panel sliding glass motor which then will
apply increased force while closing the roof opening panel sliding glass
to reduce the possibility of bounce back.
DTC Fault Trigger Conditions
| DTC |
Description |
Fault Trigger Condition |
| BCM B12F4:12 |
Vehicle Speed Output: Circuit Short To Battery |
This DTC sets in continuous memory and on-demand if the vehicle speed circuit is shorted to voltage.
|
| BCM B12F4:14 |
Vehicle Speed Output: Circuit Short To Ground Or Open |
This DTC sets in continuous memory and on-demand if the vehicle speed circuit is open or shorted to ground.
|
Possible Sources
- Wiring, terminals or connectors
- Roof opening panel motor/module assembly
- Roof opening panel jumper harness
-
BCM
Visual Inspection and Pre-checks
|
| A1 CHECK THE BCM (BODY CONTROL MODULE)
FOR DIAGNOSTIC TROUBLE CODES (DTCS) |
-
Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs) for the BCM.
Is B12F4:12 or B12F4:14 Diagnostic Trouble Code(s) (DTCs) present?
|
| A2 CHECK THE VEHICLE SPEED OUTPUT CIRCUIT FOR A SHORT TO BATTERY |
-
Disconnect Roof Opening Panel Module C921
.
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
.jpg)
|
Ground
|
Is any voltage present?
|
| A3 CHECK THE VEHICLE SPEED OUTPUT CIRCUIT FOR A SHORT TO GROUND |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
.jpg)
|
Ground
|
Is the resistance greater than 10,000 Ohms?
|
| A4 CHECK THE VEHICLE SPEED OUTPUT CIRCUIT FOR AN OPEN |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
|
C2280E-41
|
Is the resistance less than 3 ohms?
|
| A5 CHECK THE ROOF OPENING PANEL JUMPER HARNESS |
-
Check the roof opening panel jumper harness between vehicle harness C921 and the shield connector and motor connectors for opens or shorted circuits.
Is the roof opening panel jumper harness OK?
| No |
REPAIR the circuit or REPLACE the roof opening panel jumper harness.
|
|
| A6 CHECK FOR CORRECT ROOF OPENING PANEL MOTOR OPERATION |
-
Disconnect all roof opening panel system connectors, BCM
C2280E and all related in-line connectors.
-
Check for:
-
corrosion – install new connector or terminals and clean module pins
-
damaged or bent pins – install new terminals or pins
-
pushed-out pins – install new pins as necessary
-
Connect all roof opening panel system connectors, BCM
C2280E and all related in-line connectors and make sure they seat correctly.
-
Operate the system and verify 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 TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new roof opening panel motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
TEST the system for normal operation. If the concern still exists,
.GIF)
Click here to access Guided Routine (BCM)..png) Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
|
| No |
The system is operating correctly at this time. The
concern may have been caused by a loose or corroded connector.
|
|
PINPOINT TEST B : THE ROOF OPENING PANEL HAS EXCESSIVE WIND NOISE
|
Normal Operation and Fault Conditions
During normal operation the sunroof seals against
the roof opening tightly and evenly preventing wind noise. Any failure
to seal will cause wind noise.
Possible Sources
- Primary seal
- Acoustic seal
- Air deflector
Visual Inspection and Pre-checks
|
| B1 VERIFY ROOF OPENING PANEL NOISE |
|
NOTE:
It is normal to have some amount of wind noise when
the roof opening panel is in the OPEN position. To determine if the wind
noise is excessive, road test the vehicle at approximately 100 km/h (62
mph) with the roof opening panel closed, a single rear door window open
and all remaining door windows closed while observing the level of wind
noise. If the level of wind noise observed with the roof opening panel
open (with all door windows closed) is greater than the wind noise
observed with a single rear door window open, the wind noise is
excessive.
-
Road test the vehicle with the roof opening panel in the CLOSED, VENT and OPEN positions.
Is the wind noise present only in the OPEN position?
|
| B2 CHECK THE ROOF OPENING PANEL GLASS SEALS |
|
NOTE:
When the roof opening panel sliding glass is in the
VENT position, make sure that the leading edge of the glass is in
contact with the sliding glass primary seal.
-
Check the roof opening panel front trim seal,
primary seal and acoustic seal to make sure they are fitted properly and
not damaged
Are the seals OK?
| Yes |
CHECK for other vehicle conditions that could be
causing the excessive wind noise. For example, aftermarket windshield
wipers, side-view mirrors, HVAC door behind glove compartment, HVAC louvers in instrument panel, or antenna base to trim panel. REPAIR as necessary.
|
| No |
INSTALL or REPAIR the roof opening panel seal(s) in question as necessary.
|
|
| B3 CHECK THE AIR DEFLECTOR |
-
Check the air deflector for damage and correct attachment.
Is the air deflector OK?
| Yes |
PARTIALLY close the roof opening panel until the
noise is eliminated. If the noise is eliminated, INFORM the customer
that changing glass location will eliminate the wind noise. If the wind
noise is not eliminated, INSTALL a new air deflector.
REFER to: Air Deflector (501-17 Roof Opening Panel, Removal and Installation).
|
| No |
Properly ATTACH or REPLACE the air deflector.
REFER to: Air Deflector (501-17 Roof Opening Panel, Removal and Installation).
|
|
PINPOINT TEST C : THE ROOF OPENING PANEL LEAKS
|
Normal Operation and Fault Conditions
When the roof opening panel glass is completely
closed, it is flush with the roof panel. The roof opening panel primary
seal provides a seal against adverse weather conditions such as rain and
wind, preventing them from entering the passenger compartment. A
damaged, deformed or incorrectly installed seal is unable to seal the
glass efficiently. The roof opening panel frame assembly provides a
route for water to drain away from the opening panel into the body panel
drains. Obstructed openings in those drains will allow water to collect
and possibly leak into the passenger compartment.
Possible Sources
- Roof opening panel initialization
- Obstruction or debris blocking water drains
- Windshield seal
- Roof opening panel primary seal
- Roof opening panel frame
- Roof opening panel fixed glass
Visual Inspection and Pre-checks
|
| C1 CHECK THE ROOF OPENING PANEL MOTOR INITIALIZATION |
-
Carry out the roof opening panel motor initialization procedure.
REFER to: Power Roof Opening Panel Initialization (501-17 Roof Opening Panel, General Procedures).
Is the concern still present?
| No |
The system is operating normally at this time. The roof opening panel motor was not initialized.
|
|
| C2 CHECK THE ROOF OPENING PANEL DRAIN CHANNELS FOR BLOCKAGE |
|
NOTE:
If the trim panels need removal the trim panel retainers must be replaced.
-
Fully open the roof opening panel.
-
Slowly poor water in the 4 corners of the roof opening panel frame area.
-
Observe the area under the vehicle as the water is supplied to verify that the water is flowing free.
Does the water flow from the vehicle OK?
| No |
Clear the obstruction from the drain channels.
|
|
| C3 VERIFY THE LEAK IS NOT FROM THE WINDSHIELD |
-
Lower the headliner.
REFER to: Headliner - Lowering (501-05 Interior Trim and Ornamentation, Removal and Installation).
-
Check the roof opening panel and windshield for leaks.
Is the leak coming from the windshield?
| Yes |
RESEAL the windshield.
REFER to: Fixed Glass (501-11 Glass, Frames and Mechanisms, General Procedures).
|
|
| C4 VERIFY THE ROOF OPENING PANEL LEAK LOCATION |
-
Check the front and rear areas of the roof opening panel for leaks.
Is the leak coming from the roof opening panel fixed glass or antenna area of the roof opening panel?
| Yes |
REPLACE the roof opening panel fixed glass.
REFER to: Roof Opening Panel Fixed Glass (501-17 Roof Opening Panel, Removal and Installation).
|
|
| C5 CHECK THE ROOF OPENING PANEL PRIMARY SEAL CONDITION |
-
Check the roof opening panel primary seal for position, deformation, cracks, tears, or looseness.
Is the roof opening panel primary seal in good condition and free from damage?
| No |
INSTALL a new roof opening panel primary seal.
|
|
| C6 CHECK THE CONDITION OF THE ROOF OPENING PANEL TRACK ASSEMBLIES |
-
Check the roof opening panel main track and idler track assemblies for damage.
Are the assemblies OK
| Yes |
INSPECT other areas of the vehicle that may cause
water to enter the roof area, such as the windshield or the rear window.
|
| No |
INSTALL a new roof opening panel frame assembly as necessary.
REFER to: Roof Opening Panel Frame (501-17 Roof Opening Panel, Removal and Installation).
|
|
PINPOINT TEST D : THE ROOF OPENING PANEL RATTLES
|
Normal Operation and Fault Conditions
When the roof opening panel glass is completely
closed, it is flush with the roof panel. All components should be
secured correctly. The roof opening panel system is made up of many
components that require specific torque specifications and correct
installation in order to avoid any NVH concerns. Over time, components
may become loose or damaged, fasteners may become loose, sound
insulating material may wear out and foreign material may collect in the
roof opening panel frame. It is possible that one or more of these
conditions may lead to a rattle concern in the roof opening panel
system.
Possible Sources
- Roof opening panel lifter arm
- Roof opening panel frame
- Loose fasteners
- Drain channel obstructions
|
| D1 CHECK THE ROOF OPENING PANEL GLASS OPERATION |
-
Check the roof opening panel glass during operation.
Is the roof opening panel glass loose?
| Yes |
Tighten the roof opening panel sliding glass.
REFER to: Roof Opening Panel Glass (501-17 Roof Opening Panel, Removal and Installation).
|
|
| D2 CHECK THE ROOF OPENING PANEL TRACKS |
-
Open the roof opening panel glass.
-
Check the main and idler track assemblies and rear
lifter arms for obstructions, looseness or signs of damage.
Are the tracks OK?
| No |
If a rear lifter arm is the cause of the rattle, REPLACE the suspect roof opening panel frame.
REFER to: Roof Opening Panel Frame (501-17 Roof Opening Panel, Removal and Installation).
|
|
| D3 CHECK THE DRAIN CHANNELS AND GUIDES |
-
Check the drain channel and channel guides for any obstructions.
Is the drain channel and free from foreign material?
| No |
REMOVE all foreign material from the drain channel.
|
|
| D4 CHECK THE ROOF OPENING PANEL SHIELD |
-
Check the shield for correct installation.
Is the shield installed correctly?
| No |
INSTALL the shield correctly.
REFER to: Roof Opening Panel Shield (501-17 Roof Opening Panel, Removal and Installation).
|
|
| D5 CHECK THE ROOF OPENING PANEL |
-
Make sure the roof opening panel frame, drive block
assembly and wire harnesses are free from obstructions and damage, and
are securely fastened.
Is the roof opening panel assembly OK?
| Yes |
The system is operating normally.
|
|
PINPOINT TEST E : THE ROOF OPENING PANEL IS NOISY DURING OPERATION
|
Normal Operation and Fault Conditions
When the roof opening panel glass closes, it
should do so quietly and smoothly. The roof opening panel system is made
up of many components that require specific torque specifications and
correct installation in order to avoid any NVH concerns. Over time,
components may become loose or damaged, fasteners may become loose,
sound insulating material may wear out and foreign material may collect
in the roof opening panel frame. It is possible that one or more of
these conditions may lead to a noise concern in the roof opening panel
system.
Possible Sources
- Roof opening panel obstructions
- Roof opening panel lifter assemblies
- Roof opening panel shield
- Roof opening panel motor
|
| E1 CHECK THE ROOF OPENING PANEL GLASS FOR OBSTRUCTIONS OR DAMAGE |
-
Check the roof opening panel for any obstructions and damage.
Are there any obstructions and/or damage?
| Yes |
REMOVE all obstructions. REPAIR the roof opening panel as necessary.
|
|
| E2 CHECK THE ROOF OPENING PANEL GLASS OPERATION |
-
Check the roof opening panel sliding glass during operation.
Is the roof opening sliding glass loose?
| Yes |
Correctly TIGHTEN the roof opening panel.
REFER to: Roof Opening Panel Glass (501-17 Roof Opening Panel, Removal and Installation).
|
|
| E3 CHECK THE ROOF OPENING PANEL TRACKS |
-
Open the roof opening panel glass.
-
Check the main and idler track assemblies and rear
lifter arms for obstructions, looseness or signs of damage.
Are the tracks OK?
| No |
If a rear lifter arm is the cause of the rattle,
REMOVE any obstructions or REPLACE the roof opening panel frame.
REFER to: Roof Opening Panel Frame (501-17 Roof Opening Panel, Removal and Installation).
|
|
| E4 CHECK THE ROOF OPENING PANEL SHIELD |
-
Check the roof opening panel shield for correct movement.
Is the roof opening panel shield moving correctly?
| No |
REPAIR or INSTALL a new roof opening panel shield as necessary.
REFER to: Roof Opening Panel Shield (501-17 Roof Opening Panel, Removal and Installation).
|
|
| E5 CHECK THE ROOF OPENING PANEL MOTORS |
-
Gain access to the roof opening panel glass and shield motors.
-
Open the roof opening panel and shield.
Is the roof opening panel glass motor OK?
| Yes |
INSTALL a new roof opening shield motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
|
| No |
INSTALL a new roof opening sliding glass motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
|
|
PINPOINT TEST F : THE ROOF OPENING PANEL DOES NOT OPEN, CLOSE OR VENT
Refer to Wiring Diagrams Cell 101 for schematic and connector information.
Normal Operation and Fault Conditions
The roof opening panel motor receives battery voltage at all times from BCM fuse F24 (30A), and receives ignition voltage (accessory delay) from BCM
fuse F2 (10A). The roof opening panel motor and switch are grounded at
G404. When the roof opening panel switch is pressed, a ground signal is
sent to the roof opening panel motor on the sunroof open circuit. When
the roof opening panel switch is pulled, a ground signal is sent to the
roof opening panel motor on the sunroof close circuit. When the roof
opening panel tilt switch is pressed, a ground signal is sent to the
roof opening panel motor on the tilt/vent switch circuit. The motor
responds to these signals dependant on the sliding glass panel and
shield positions. One touch operation is accomplished by pressing any of
the switches for less than 1 second. For more information on the
operation, REFER to: Roof Opening Panel - System Operation and Component Description (501-17 Roof Opening Panel, Description and Operation).
There is a communication circuit between the
shield motor and the sunroof motor for back and fourth communication
between the 2 motors only, and not for diagnostics. If the communication
circuit between the sunroof motor and shield motor is open or shorted
the sunroof motor will operate only to fully close the sliding glass,
and the shield motor will not operate at all.
Possible Sources
- Fuses
- Wiring, terminals or connectors
- Roof opening panel motor/module assembly
- Roof opening panel control switch
- Roof opening panel jumper harness
Visual Inspection and Pre-checks
-
BCM fuse F2 (10A)
-
BCM fuse F24 (30A)
|
| F1 CHECK THE POWER WINDOW OPERATION |
-
Attempt to operate the power windows.
Do the power windows operate properly?
| No |
Diagnose the accessory delay relay circuit.
REFER to: Glass, Frames and Mechanisms (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing).
|
|
| F2 CHECK THE SHIELD OPERATION |
-
Press and hold the shield open switch until the shield is fully opened.
-
Press and hold the shield close switch until the shield is fully closed.
Does the shield operate as expected?
|
| F3 CHECK THE ROOF OPENING PANEL GLASS OPERATION |
-
Check the roof opening panel glass operation.
-
Press and release the glass switch. The
glass should open fully open in the one-touch open mode. If not, press
and hold the glass open switch to fully open the glass.
-
Press and release the glass switch. The
glass should close fully in the one-touch close mode. If not, press and
hold the glass close switch to fully close the glass.
-
Press and release the vent switch. The glass
should move to the vent position. If not, press and hold the vent
switch to fully vent the glass.
Does the glass operate as expected?
| Yes |
The roof opening panel is operating correctly at this time.
|
| No |
• If the roof opening panel glass does not operate
with one-touch operation, but does open and close and vent with manual
operation, (press and hold),
REFER to: Power Roof Opening Panel Initialization (501-17 Roof Opening Panel, General Procedures).
• If the glass does not function any of the switches pressed and held, GO to F8
• If the glass does function properly with a specific individual switch pressed and held, GO to F4
|
|
| F4 CHECK THE ROOF OPENING PANEL MOTOR CONTROL CIRCUITS FOR A SHORT TO VOLTAGE |
-
Disconnect Roof Opening Panel Module C921
.
-
Disconnect Roof Opening Panel Control Switch C930
.
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-2
|
|
Ground
|
|
C921-4
|
|
Ground
|
Is any voltage present?
|
| F5 CHECK THE ROOF OPENING PANEL MOTOR CONTROL CIRCUITS FOR A SHORT TO GROUND |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-2
|
|
Ground
|
|
C921-4
|
|
Ground
|
Are the resistances greater than 10,000 ohms?
|
| F6 CHECK THE ROOF OPENING PANEL MOTOR CONTROL CIRCUITS FOR AN OPEN |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-2
|
|
C930-5
|
|
C921-4
|
|
C930-4
|
Are the resistances less than 3 ohms?
|
| F7 CHECK THE ROOF OPENING PANEL MOTOR CONTROL CIRCUITS FOR A SHORT TOGETHER |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-2
|
|
C921-4
|
|
C921-2
|
|
C921-6
|
|
C921-2
|
|
C921-7
|
|
C921-2
|
|
C921-1
|
|
C921-4
|
|
C921-6
|
|
C921-4
|
|
C921-7
|
|
C921-4
|
|
C921-1
|
Are the resistances greater than 10,000 ohms?
|
| F8 CHECK ROOF OPENING PANEL CONTROL SWITCH GROUND CIRCUIT |
-
Disconnect Roof Opening Panel Control Switch C930
.
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C930-6
|
|
Ground
|
Is the resistance less than 3 ohms?
|
| F9 CHECK THE ROOF OPENING PANEL MOTOR GROUND CIRCUIT |
-
Disconnect Roof Opening Panel Module C921
.
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-7
|
|
Ground
|
Is the resistance less than 3 ohms?
|
| F10 CHECK THE ROOF OPENING PANEL MOTOR VOLTAGE CIRCUITS |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-6
|
|
Ground
|
|
C921-1
|
|
Ground
|
Are the voltages greater than 11 volts?
| No |
VERIFY BCM fuses F2 (10A) and F24 (30A) are OK.
If the fuses are OK, REPAIR the affected circuit for high resistance or an open.
If the fuses are not OK, REFER to the Wiring Diagrams manual to identify the cause of the circuit short.
|
|
| F11 CHECK THE ROOF OPENING PANEL JUMPER HARNESS |
-
Check the roof opening panel jumper harness between vehicle harness C921 and the shield connector and motor connectors for opens or shorted circuits.
Is the roof opening panel jumper harness OK?
| No |
REPAIR the circuit or REPLACE the roof opening panel jumper harness.
|
|
| F12 CHECK THE ROOF OPENING PANEL MOTOR/MODULES AND SWITCH FOR CORRECT OPERATION |
-
Disconnect All sunroof system and related in-line connectors.
-
Check for:
-
corrosion – install new connector or terminals and clean module pins
-
damaged or bent pins – install new terminals or pins
-
pushed-out pins – install new pins as necessary
-
Connect all sunroof system and related in-line connectors and make sure they seat correctly.
-
Operate the system and verify 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 TSB
instructions. If no Technical Service Bulletins (TSBs) address this
concern, INSTALL a new roof opening panel motor and shield motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
TEST the system for normal operation. If the concern still exists, INSTALL a new roof opening panel control switch. REFER to: Roof Opening Panel Control Switch (501-17 Roof Opening Panel, Removal and Installation).
|
| No |
The system is operating correctly at this time. The
concern may have been caused by a loose or corroded connector.
|
|
PINPOINT TEST G : THE SHIELD DOES NOT OPEN OR CLOSE
Refer to Wiring Diagrams Cell 101 for schematic and connector information.
Normal Operation and Fault Conditions
The shield motor receives battery voltage at all times from BCM fuse F24 (30A), and receives ignition voltage (accessory delay) from BCM
fuse F2 (10A). The roof opening panel motor and switch is grounded
through circuit G404. When the shield open switch is pressed, a signal
is sent to the shield motor on sunshade open circuit which causes the
shield to open. When the shield close switch is pressed, a signal is
sent to the shield motor on the sunshade close circuit which causes the
shield to close.
If the K bus (communication) circuit between the
sunroof motor and shield motor is open or shorted the sunroof motor will
only fully close the sunroof one time, then not operate. Also, if the K
bus circuit is open or shorted the shield motor will not operate but
the roof opening panel close to the fully closed position 1 time.
If the shield is not open at least to the front of the rear glass (comport stop), the glass will not open.
Possible Sources
- Fuse(s)
- Wiring, terminals or connectors
- Roof opening panel shield motor/module assembly
- Roof opening panel switch
|
| G1 CHECK THE SHIELD CONTROL CIRCUITS FOR A SHORT TO VOLTAGE |
-
Disconnect Roof Opening Panel Module C921
.
-
Disconnect Roof Opening Panel Control Switch C930
.
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
|
Ground
|
|
C921-13
|
|
Ground
|
Is any voltage present?
|
| G2 CHECK THE SHIELD CONTROL CIRCUITS FOR A SHORT TO SHORT TO GROUND |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
|
Ground
|
|
C921-13
|
|
Ground
|
Are the resistances greater than 10,000 ohms?
|
| G3 CHECK THE SHIELD CONTROL CIRCUITS FOR AN OPEN |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
|
C930-13
|
|
C921-13
|
|
C930-11
|
|
C921-11
|
|
C3856-1
|
|
C921-13
|
|
C3856-3
|
|
C921-11
|
|
C3469-2
|
|
C921-13
|
|
C3469-4
|
Are the resistances less than 3 ohms?
|
| G4 CHECK THE SHIELD CONTROL CIRCUITS FOR A SHORT TOGETHER |
-
Measure:
Click to display connectors
|
Positive Lead
|
Measurement / Action
|
Negative Lead
|
|
C921-11
|
|
C921-7
|
|
C921-11
|
|
C921-1
|
|
C921-11
|
|
C921-13
|
|
C921-13
|
|
C921-7
|
|
C921-13
|
|
C921-1
|
Are the resistances greater than 10,000 ohms?
|
| G5 CHECK THE ROOF OPENING PANEL JUMPER HARNESS |
-
Check the roof opening panel jumper harness between vehicle harness C921 and the shield connector and motor connectors for opens or shorted circuits.
Is the roof opening panel jumper harness OK?
| No |
REPAIR the circuit or REPLACE the roof opening panel jumper harness.
|
|
| G6 CHECK THE ROOF OPENING PANEL MOTOR/MODULES AND SWITCH FOR CORRECT OPERATION |
-
Disconnect All sunroof system and related in-line connectors.
-
Check for:
-
corrosion – install new connector or terminals and clean module pins
-
damaged or bent pins – install new terminals or pins
-
pushed-out pins – install new pins as necessary
-
Connect all sunroof system and related in-line connectors and make sure they seat correctly.
-
Operate the system and verify 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 TSB
instructions. If no Technical Service Bulletins (TSBs) address this
concern, INSTALL a new roof opening panel motor and shield motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
TEST the system for normal operation. If the concern still exists, INSTALL a new roof opening panel control switch. REFER to: Roof Opening Panel Control Switch (501-17 Roof Opening Panel, Removal and Installation).
|
| No |
The system is operating correctly at this time. The
concern may have been caused by a loose or corroded connector.
|
|
PINPOINT TEST H : THE ONE-TOUCH OPEN/CLOSE IS INOPERATIVE
Refer to Wiring Diagrams Cell 101 for schematic and connector information.
Normal Operation and Fault Conditions
All of the roof opening panel switches are single
position switches that can achieve one touch operation in either
direction by pressing the switch for less than 1 second. For manual
operation, simply press and hold the switch until the roof opening panel
or shield is in the desired position and release the switch. When the
front roof opening panel is in the fully closed or between fully closed
and full vent position the vent switch operates in either manual or one
touch operation similar to the roof opening panel and shield switches.
If the shield is not open at lease to the front of the rear fixed glass
(comfort stop) when the vent or roof opening panel glass open switch is
pressed then the shield will first open to the comfort stop position
before the roof opening panel glass will move. The roof opening panel
glass and the shield will not move at the same time. One touch operation
of either the roof opening panel or the shield can be cancelled anytime
by pressing any roof opening panel switches during operation. The
sunroof open one touch operation is the same as sunroof close, except if
the shield is closed when the sunroof motor is commanded to perform a
one-touch open operation the motors will communicate and the shield
motor will perform a one-touch open operation, then the sunroof motor
will perform the one-touch open operation requested. The shield one
touch operation is the same as the sunroof except if the sunroof is
open, the shield will only move to the comfort stop position. The
sunroof will not open as a result of a shield one touch close operation.
For more information on the operation. REFER to: Roof Opening Panel - System Operation and Component Description (501-17 Roof Opening Panel, Description and Operation).
Possible Sources
- Roof opening panel initialization (sunroof motor or shield motor)
- Roof opening panel motor/module assembly
- Shield motor
- Roof opening panel control switch
|
| H1 CHECK THE ROOF OPENING PANEL MOTORS FOR INITIALIZATION |
-
Carry out the roof opening panel motor initialization procedure for the sunroof and shield.
REFER to: Power Roof Opening Panel Initialization (501-17 Roof Opening Panel, General Procedures).
-
Operate the system using one-touch.
Is the concern still present?
| No |
The system is operating normally at this time. The roof opening panel motor was not initialized.
|
|
| H2 CHECK THE ROOF OPENING PANEL MOTOR/MODULES AND SWITCH FOR CORRECT OPERATION |
-
Disconnect All sunroof system and related in-line connectors.
-
Check for:
-
corrosion – install new connector or terminals and clean module pins
-
damaged or bent pins – install new terminals or pins
-
pushed-out pins – install new pins as necessary
-
Connect all sunroof system and related in-line connectors and make sure they seat correctly.
-
Operate the system and verify 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 TSB
instructions. If no Technical Service Bulletins (TSBs) address this
concern, INSTALL a new roof opening panel motor and shield motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
TEST the system for normal operation. If the concern still exists, INSTALL a new roof opening panel control switch. REFER to: Roof Opening Panel Control Switch (501-17 Roof Opening Panel, Removal and Installation).
|
| No |
The system is operating correctly at this time. The
concern may have been caused by a loose or corroded connector.
|
|
System Operation
Roof Opening Panel Operating System
The accessory delay relay in the BCM
supplies voltage through fuse F2 (10A) to the roof opening panel
sliding glass motor and roof opening panel shield motor allowing the
motors to respond to roof opening panel control switch commands...
Initialization
WARNING:
Keep objects and body parts clear of the glass panel when
carrying out the initialization procedure. During the initialization
procedure, the glass panel closes with high force and cannot detect
objects in its path...
Other information:
System Operation
System Diagram - Heated/Ventilated Seats
Item
Description
1
RACM
2
MS-CAN
3
SCMF
4
LH Rear Seat
5
Cushion Temp Sensor
6
RH Rear Seat
7
Backrest Heater Mat
8
Cushion Heater Mat
9
Cushion and Backrest Blower Motors
10
Backrest Heater Mat
11
Cushion Heater Mat
12
Cushion Temp Sensor
13
Cushion and Backrest Blower Motors
14
HS-CAN3
15
GWM
Network Message Chart - Heated/Ventilated Seats
SCMF (rear seat climate control module) Network Input Messages
Broadcast Message
Originating Module
Message Purpose
Seat control requests
RACM control module
Contains the heated/ventilated seat request information...
Removal
NOTE:
Removal steps in this procedure may contain installation details.
NOTE:
This step is only necessary when installing a new component.
NOTE:
The PMI process must begin with the current SCCM installed. If the current SCCM does not respond to the diagnostic scan tool, the tool may prompt for As-Built Data as part of the repair...
Description and Operation - Roof Opening Panel - System Operation and Component Description
General Procedures - Power Roof Opening Panel Initialization