| Diagnosis and Testing Worldwide diagnostic system (WDS) Roof Opening Panel Refer to Wiring Diagrams Section 501-17, for schematic and connector information. Inspection and Verification - Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart | Mechanical | Electrical | - Roof opening panel
- Seal(s)
- Weatherstrip
- Alignment
| - Fuse(s)
- Electrical connector(s)
| - If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.
Symptom Chart Symptom Chart | Symptom | Possible Sources | Action | | The roof opening panel leaks | * Drain tubes. | * CHECK the drain tubes for blockage or obstruction. CARRY OUT the Water Drainage System Check and Water Leak Corrections.
REFER to: Water Drainage System Check and Water Leak Corrections (501-17 Roof Opening Panel, General Procedures).
| | The roof opening panel rattles | * Headliner. | * CHECK the headliner for security.
REFER to: Headliner - Vehicles With: Sliding Roof Opening Panel (501-05 Interior Trim and Ornamentation, Removal and Installation).
| | * Guides and track. | * CHECK for worn or damaged components. CARRY OUT the Roof Opening Panel Alignment.
REFER to: Roof Opening Panel Alignment (501-17 Roof Opening Panel, General Procedures).
| | The roof opening panel is noisy during operation | * Guides and track. * Motor. * Roof Opening Panel Glass. | * CHECK for worn or damaged components. CARRY OUT the Roof Opening Panel Alignment.
REFER to: Roof Opening Panel Alignment (501-17 Roof Opening Panel, General Procedures).
| | The roof opening panel does not open or close | * Switch. | * CARRY OUT the Roof Opening Panel Control Switch Component Test in this section. | | * Motor. | * CARRY OUT the Roof Opening Panel Motor Initialization.
REFER to: Roof Opening Panel Motor Initialization (501-17 Roof Opening Panel, General Procedures).
| | * Circuits. | * | | The roof opening panel does not stop in flush from any position | * Guides and track. | * CHECK for worn or damaged components. CARRY OUT the Roof Opening Panel Alignment.
REFER to: Roof Opening Panel Alignment (501-17 Roof Opening Panel, General Procedures).
| | * Motor. | * CARRY OUT the Roof Opening Panel Motor Initialization.
REFER to: Roof Opening Panel Motor Initialization (501-17 Roof Opening Panel, General Procedures).
| | The roof opening panel shows unexpected bounce back at high speed | * Motor. * Circuit(s). | * | | No communication with the global closing module | * Global closing module. * Motor. * Circuit. | * | Pinpoint Tests NOTE:Use a digital multimeter for all electrical measurements. | PINPOINT TEST A : THE ROOF OPENING PANEL DOES NOT OPEN OR CLOSE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | A1: CHECK FOR VOLTAGE TO THE ROOF OPENING PANEL CONTROL SWITCH | | | 1 Ignition switch in position II. | | | 2 CHECK the operation of the roof opening panel control switch lamp. | | | Does the roof opening panel control switch lamp illuminate? Yes No | | A2: CHECK THE SUPPLY VOLTAGE TO THE ROOF OPENING PANEL CONTROL UNIT, CIRCUIT 29-AG12 (OG/BK) | | | 1 Ignition switch in position 0. | | | 2 Disconnect Fuse 40 (20A). | | | 3 Disconnect Roof Opening Panel Control Unit C525. | | | 4 Connect Fuse 40 (20A). | | | 5 Measure the voltage between the roof opening panel control unit C525 pin 1, circuit 29-AG12 (OG/BK), harness side and ground. | | | Is the voltage greater than 10 volts? Yes No REPAIR circuit 29-AG12 (OG/BK). TEST the system for normal operation. | | A3: CHECK THE ROOF OPENING PANEL CONTROL SWITCH DOWN/OPEN GROUND CIRCUIT | | | 1 Operate the roof opening panel control switch to the DOWN/OPEN position and keep it pressed. | | | 2 Measure the resistance between the roof opening panel control unit C525 pin 9, circuit 31S-AG27 (BK/WH), harness side and ground. | | | Is the resistance less than 100 ohms? Yes No REPAIR circuit 31S-AG27 (BK/WH). TEST the system for normal operation. | | A4: CHECK THE ROOF OPENING PANEL CONTROL SWITCH UP/CLOSE GROUND CIRCUIT | | | 1 Operate the roof opening panel control switch to the UP/CLOSE position and keep it pressed. | | | 2 Measure the resistance between the roof opening panel control unit C525 pin 8, circuit 31S-AG7 (BK/BU), harness side and ground. | | | Is the resistance less than 100 ohms? Yes No REPAIR circuit 31S-AG7 (BK/BU). TEST the system for normal operation. | | A5: CHECK THE ROOF OPENING PANEL CONTROL UNIT GROUND CIRCUIT | | | 1 Measure the resistance between the roof opening panel control unit C525 pin 10, circuit 31-AG12 (BK), harness side and ground. | | | Is the resistance less than 5 ohms? Yes 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. No REPAIR circuit 31-AG12 (BK). TEST the system for normal operation. | | A6: CHECK THE VOLTAGE TO THE ROOF OPENING PANEL CONTROL SWITCH LAMP, CIRCUIT 15-AG7 (GN/BU) | | | 1 Ignition switch in position 0. | | | 2 Disconnect Roof Opening Panel Control Switch C522. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between the roof opening panel control switch C522 pin 1, circuit 15-AG7 (GN/BU), harness side and ground. | | | Is the voltage greater than 10 volts? Yes No REPAIR circuit 15-AG7 (GN/BU). TEST the system for normal operation. | | A7: CHECK THE ROOF OPENING PANEL CONTROL SWITCH GROUND CIRCUIT | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between the roof opening panel control switch C522 pin 4, circuit 31-AG7 (BK), harness side and ground. | | | Is the resistance less than 5 ohms? Yes VERIFY the customer concern. No REPAIR circuit 31-AG7 (BK). TEST the system for normal operation. | | PINPOINT TEST B : THE ROOF OPENING PANEL SHOWS UNEXPECTED BOUNCE BACK AT HIGH SPEED | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | B1: CHECK THE OPERATION OF THE MULTIFUNCTION DISPLAY | | | 1 Drive the vehicle. | | | 2 Observe the multi-function display 'Average speed' function. | | | Does the display operate correctly? Yes No REFER to: Instrument Cluster (413-01 Instrument Cluster, Diagnosis and Testing). | | B2: CHECK FOR A SHORT TO GROUND | | | 1 Disconnect Roof Opening Panel Control Unit C525. | | | 2 Disconnect Central Junction Box C98. | | | 3 Measure the resistance between the roof opening panel control unit C525 pin 6, circuit 8-GB8 (WH/BU), harness side and ground. | | | Is the resistance greater than 10,000 ohms? Yes No REPAIR circuit 8-GB8 (WH/BU). TEST the system for normal operation. | | B3: CHECK FOR CONTINUITY BETWEEN THE CENTRAL JUNCTION BOX (CJB) AND THE ROOF OPENING PANEL CONTROL UNIT | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between the central junction box C98 pin 8, circuit 8-GB8 (WH/BU), harness side and the roof opening panel control unit C525 pin 6, circuit 8-GB8 (WH/BU), harness side. | | | Is the resistance less than 5 ohms? Yes 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. No REPAIR circuit 8-GB8 (WH/BU). TEST the system for normal operation. | | PINPOINT TEST C : NO COMMUNICATION WITH THE GLOBAL CLOSING MODULE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | C1: CHECK OPERATION OF THE GLOBAL CLOSING | | | 1 Operate the global closing function. | | | Do the door windows close? Yes No Refer to WDS. | | C2: CHECK FOR A SHORT TO GROUND | | | 1 Disconnect Roof Opening Panel Control Unit C525. | | | 2 Disconnect Central Junction Box C98. | | | 3 Measure the resistance between the roof opening panel control unit C525 pin 2, circuit 8-AG12 (WH/GN), harness side and ground. | | | Is the resistance greater than 10,000 ohms? Yes No REPAIR circuit 8-AG12 (WH/GN). TEST the system for normal operation. | | C3: CHECK FOR CONTINUITY BETWEEN THE CENTRAL JUNCTION BOX (CJB) AND THE ROOF OPENING PANEL CONTROL UNIT | | | 1 Measure the resistance between the central junction box C98 pin 2, circuit 8-AG12 (WH/GN), harness side and the roof opening panel control unit C525 pin 2, circuit 8-AG12 (WH/GN), harness side. | | | Is the resistance less than 5 ohms? Yes Install a new roof opening panel motor.
REFER to: Roof Opening Panel Motor (501-17 Roof Opening Panel, Removal and Installation).
No REPAIR circuit 8-AG12 (WH/GN). TEST the system for normal operation. | Components Tests Roof Opening Panel Control Switch - Measure the resistance between the following:
| Roof Opening Panel Control Switch Position | Roof Opening Panel Control Switch Terminals | Measurements | | Multimeter Positive Lead | Multimeter Negative Lead | | Neutral | 1 | 2 | Greater than 10,000 ohms | | Neutral | 1 | 3 | Greater than 10,000 ohms | | Neutral | 1 | 4 | Less than 100 ohms | | Neutral | 4 | 1 | Greater than 10,000 ohms | | First detente Up/Close | 2 | 4 | Less than 5 ohms | | Fully Up/Close | 2 | 4 | Less than 5 ohms | | First detente Down/Open | 2 | 4 | Greater than 10,000 ohms | | Fully Down/Open | 2 | 4 | Less than 5 ohms | | First detente Down/Open | 3 | 4 | Less than 5 ohms | | Fully Down/Open | 3 | 4 | Less than 5 ohms | | First detente Up/Close | 3 | 4 | Greater than 10,000 ohms | | Fully Up/Close | 3 | 4 | Less than 5 ohms | - If all measurements of the roof opening panel control switch are as noted, return to the Pinpoint Test. Otherwise install a new roof opening panel control switch.
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