Dual Pane Sunroof System
DUAL PANE SUNROOF AND SUNSHADE
The hardwired circuits between components related to the operation of the dual pane sunroof and sunshade system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the integrated sunroof/sunshade motor electronics. If the sunroof or sunshade control switches, motors and circuitry test okay, but the express or Obstacle Detection features are still ineffective following the initialization procedures, the sunroof or sunshade motor assembly may require replacement.
TEST PREPARATION
- Check Electrical System Voltage - There should be at least 12.5 volts when measured at the battery terminals.
- Ignition Switch Position - The ignition switch should be in the ON/Run or ACCESSORY positions with the engine not running.
- Note Power Sunroof Responses - Press each of the sunroof control switches one at a time and note the system responses. Try both express (press & release) and manual (press & hold) operation for each switch.
- Note Power Sunshade Responses - Press each of the sunshade control switches one at a time and note the system responses. Try both express (press & release) and manual (press & hold) operation for each switch.
Match the noted system responses to the conditions listed in the diagnostic table to determine the possible causes and corrections for the condition.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| POWER SUNROOF AND POWER SUNSHADE COMPLETELY INOPERATIVE AND UNRESPONSIVE | 1. Thermal protection feature on motor active. | 1. If the sunroof or sunshade has been cycled consecutively several times with little pause between cycles the motor thermal protection may engage and stop responding to switch inputs. Do not attempt to operate sunroof for at least two minutes to allow motor(s) to cool and the thermal protection to become inactive, then test again. |
| 2. Blown sunroof feed B (+) fuse. | 2. Inspect sunroof B (+) fuse located in power distribution center and replace if required. | |
| 3. Broken ground circuit. | 3. Test and repair the open sunroof or sunshade motor ground circuit if required. | |
| 4. Broken fused B (+) circuit | 4. Test and repair the open sunroof fused B (+) circuit if required. | |
| 5. Broken fused ignition (ON - ACC) circuit. | 5. Test and repair the open fused ignition (ON - ACC) circuit if required. | |
| 6. Bent connector pin for B (+) or Ground circuit at one of the wire harness connections between the sunroof and Power Distribution Center (PDC) | 6. Disconnect wire harness connections between the sunroof harness connection and PDC and inspect closely for bent connector pin. Replace wire harness or repair if bent connector pin found. | |
| 7. Defective sunroof/sunshade switch assembly in overhead console. | 7. Test and replace the sunroof/sunshade switch assembly (overhead console assembly) if required. | |
| 8. Defective sunroof/sunshade motor | 8. Replace the sunroof/sunshade motor if required. | |
| SLIGHT SUNROOF OR SUNSHADE MOVEMENT OR AUDIBLE RELAY CLICKS BUT NO COMPLETE MOVEMENT EVENTS | 1. Binding glass mechanism or binding sunshade guide due to debris or obstruction in aluminum guide rail. | 1. Remove the debris or obstruction from sunroof guide rail. |
| 2. Ineffective sunroof or sunshade motor and module assembly. | 2. Replace the sunroof or sunshade motor if required. | |
| GLASS OR SUNSHADE AUTO REVERSES DURING EXPRESS CLOSE OPERATION BUT NO OBSTRUCTION PRESENT IN ROOF OPENING | 1. Debris or obstruction in sunroof guide rails interfering with sunroof mechanism or sunshade guides. | 1. Fully open sunroof glass or sunshade and inspect sunroof aluminum guide rails for debris that may be interfering with sliding mechanisms and clean as necessary. |
| 2. Debris under wind deflector springs not allowing wind deflector to properly retract during close operation. | 2. Inspect for debris under wind deflector springs and remove as necessary. | |
| 3. Sunroof obstacle detection system requires re-calibration | 3. Perform re-initialization & obstacle detection calibration procedure Refer to MOTOR, SUNROOF, STANDARD PROCEDURE . |
|
| POWER SUNROOF OPENS TO VENT AND CLOSES FROM VENT BUT DOES NOT SLIDE OPEN, OR POWER SUNSHADE CLOSES BUT DOES NOT OPEN | 1. Bent connector pin for OPEN switch circuit at one of the wire harness connections between the sunroof and overhead console sunroof/sunshade control switch | 1. Disconnect wire harness connections at the sunroof harness to vehicle harness and at overhead console sunroof control switch and inspect closely for bent connector pin. Replace wire harness or repair if bent connector pin found. |
| 2. Broken wire/circuit connection between sunroof or sunshade OPEN switch in overhead console and sunroof motors. | 2. Inspect for circuit continuity between the wire harness connection to the sunroof and the wire harness connection to the OPEN switch in the overhead console (Refer to wiring information for connector pin outs). Repair the circuit if no continuity for sunroof/sunshade OPEN switch circuit. | |
| 3. Defective sunroof OPEN switch in overhead console. | 3. Test switch to confirm circuit closes while OPEN switch is pressed. Replace switch if necessary. | |
| 4. Defective sunroof or sunshade motor assembly. | 4. Replace the sunroof or sunshade motor if required. | |
| POWER SUNROOF VENTS AND SLIDES OPENS BUT DOES NOT CLOSE, OR POWER SUNSHADE OPENS BUT DOES NOT CLOSE | 1. Bent connector pin for CLOSE switch circuit at one of the wire harness connections between the sunroof and overhead console sunroof/sunshade control switch | 1. Disconnect wire harness connections at the sunroof harness to vehicle harness and at overhead console sunroof control switch and inspect closely for bent connector pin. Replace wire harness or repair if bent connector pin found. |
| 2. Broken wire/circuit connection between sunroof or sunshade CLOSE switch in overhead console and sunroof motors. | 2. Inspect for circuit continuity between the wire harness connection to the sunroof and the wire harness connection to the CLOSE switch in the overhead console (Refer to wiring information for connector pin outs). Repair the circuit if no continuity for sunroof/sunshade CLOSE switch circuit. | |
| 3. Defective sunroof CLOSE switch in overhead console. | 3. Test switch to confirm circuit closes while CLOSE switch is pressed. Replace switch if necessary. | |
| 4. Defective sunroof or sunshade motor assembly. | 4. Replace the sunroof or sunshade motor if required. | |
| POWER SUNROOF SLIDES OPEN AND CLOSE BUT WILL NOT VENT | 1. Bent connector pin for VENT switch circuit at one of the wire harness connections between the sunroof and overhead console sunroof/sunshade control switch | 1. Disconnect wire harness connections at the sunroof harness to vehicle harness and at overhead console sunroof control switch and inspect closely for bent connector pin. Replace wire harness or repair if bent connector pin found. |
| 2. Broken wire/circuit connection between sunroof VENT switch in overhead console and sunroof motors. | 2. Inspect for circuit continuity between the wire harness connection to the sunroof and the wire harness connection to the VENT switch in the overhead console (Refer to wiring information for connector pin outs). Repair the circuit if no continuity for sunroof VENT switch circuit. | |
| 3. Defective sunroof CLOSE switch in overhead console. | 3. Test switch to confirm circuit closes while VENT switch is pressed. Replace switch if necessary. | |
| 4. Defective sunroof motor assembly. | 4. Replace the sunroof motor if required. | |
| POWER SUNROOF INTERMITTENTLY VENTS, OPENS OR CLOSES ON ITS OWN WITHOUT USER SWITCH INPUT WHILE DRIVING VEHICLE | 1. OPEN, CLOSE, or VENT switch circuit wire between sunroof switch and sunroof is pinched against body (wire insulation damaged) and grounding out to body. | 1. Inspect circuit wires between sunroof switch and sunroof motor for cut wire insulation or pinch conditions against sheet metal body and repair/replace if necessary. |
| POWER SUNROOF GLASS OR POWER SUNSHADE MOVES ONLY WHEN SWITCH IS PRESSED AND HELD (MANUAL MODE - LOSS OF ONE-TOUCH OR EXPRESS MODE) | 1. Sunroof motors have lost calibration. | 1. Perform re-initialization & obstacle detection calibration procedure Refer to MOTOR, SUNROOF, STANDARD PROCEDURE . |
| POWER SUNROOF GLASS MOVEMENT INCONSISTENT - NOT SMOOTH AND UNIFORM | 1. Improperly adjusted sliding glass panel or sunshade. | 1. Adjust the sunroof glass panel or sunshade if required. |