No Crank / Gauges Inop / Cannot Remove Key / Radio Turns Off - keywords audio C500 C600 communication courtesy dimming dome fuse gauge inoperative intermittent interior IPC lamp light lock mirror plug
| Subject: | No Crank / Gauges Inop / Cannot Remove Key / Radio Turns Off |
| Models: | 2004- 2006 Cadillac SRX |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment the vehicle exhibits one of the following concerns:
| • | No Crank/ No start |
| • | Instrument Panel Gauges become erratic or inoperative |
| • | Radio turns off |
| • | Cannot remove the key from the ignition |
| • | Audio system noise or the speakers cut out |
| • | Courtesy Lights are inoperative |
| • | The Day/ Night Mirror dimming does not work properly |
Note: Careful questioning of the customer may reveal the concerns are more likely to happen during wet weather or after a car wash.
| • | Inspection of the vehicle may reveal one or more of the following diagnostic clues: |
| • | INTERIOR LAMP Fuse is open |
| • | DRIVER DR MOD Fuse is open |
| • | C0561 System Disabled Information Stored |
| • | U1000 Class 2 Data Link |
| • | U1016 Lost Communications With ECM/PCM/VCM |
| • | U1040 Lost Communications With Electronic Brake Control Module (EBCM) |
| • | U1064 Lost Communications Dash Integration Module (DIM) |
| • | U1066 Lost Communications With Rear Integration Module (RIM) |
| • | U1096 Lost Communications With Instrument Panel Cluster (IPC) |
| • | U1153 Lost Communications With HVAC Control Module |
| • | U1300 Class 2 Data Link Low |
| • | U1301 Class 2 Data Link High |
One or more of the following circuits may be affected:
Pin | Wire Color | Circuit No. | Function |
1 | RD/WH | 1040 | Battery Positive Voltage |
2 | RD/WH | 640 | Battery Positive Voltage |
3 | PU | 1807 | Class 2 Serial Data (Primary) |
5 | GY | 1690 | Automatic Day/Night Mirror Signal |
6 | BK/WH | 351 | Ground |
7 | BK | 350 | Ground |
8 | BK/WH | 351 | Ground |
9 | TN | 1856 | Left Front Tweeter Speaker Output (+) (U57) |
L-BU | 1957 | Left Front Midrange Speaker Output (-) (U66) | |
10 | YE | 1956 | Left Front Tweeter Speaker Output (-) (U57) |
D-BU | 1857 | Left Front Midrange Speaker Output (+) (U66) | |
11 | D-BU/WH | 149 | Courtesy Lamp Supply Voltage |
12 | GY | 157 | Courtesy Lamp Control |
13 | PK | 1691 | Automatic Day/Night Mirror Low Reference (DR2/DR4/D24) |
Recommendation/Instructions:
Inspect for a missing or poorly seated body plug located on the driver or passenger side A-pillar (1). This may allow for water intrusion and corrosion to develop in C500 or C600 Body Harness to Left Front Door Harness. The body plug can be inspected from outside of the vehicle with driver or passenger front door fully opened. A replacement body plug can be obtained through SPO using part number 25745133. Repair or clean the connection/ terminals as necessary. The female side of the connector is removed from the inside of the vehicle after removing the rocker trim panel and reaching through the opening in the sheet metal behind the parking brake. The male side of the connector is removed from the outside of the vehicle after unseating the pass-through bellows.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
