GEM Diagnostic Trouble Code (DTC) Index
| DTC | Description | Source | Action |
|---|---|---|---|
| B1302 | Accessory Delay Relay Coil Circuit Failure | GEM | GO to PINPOINT TEST A . |
| B1304 | Accessory Delay Relay Coil Circuit Open or Short to Battery | GEM | GO to PINPOINT TEST A . |
GEM DIAGNOSTIC TROUBLE CODE (DTC) INDEX
Symptom Chart
| Condition | Possible Sources | Action |
|---|---|---|
| No communication with the generic electronic module (GEM) | Central junction box (CJB) fuse 27 (10A). Circuitry. GEM. | REFER to MULTIFUNCTION ELECTRONIC MODULE . |
| All power windows are inoperative | CJB fuse 25 (30A). CJB accessory delay relay. GEM. Driver window control switch. Circuitry. | GO to PINPOINT TEST A . |
| Single power window is inoperative-driver | Circuitry. Driver window control switch. Front door window regulator motor. | GO to PINPOINT TEST B . |
| Single power window is inoperative-front passenger | Circuitry. Driver window control switch. Passenger window control switch. Front door window regulator motor. | GO to PINPOINT TEST C . |
| Single power window is inoperative-right rear | Circuitry. Driver window control switch. Right rear window control switch. Rear door window regulator motor. | GO to PINPOINT TEST D . |
| Single power window is inoperative-left rear | Circuitry. Driver window control switch. Left rear window control switch. Rear door window regulator motor. | GO to PINPOINT TEST E . |
| The defrost system is inoperative | CJB fuse 22 (15A). Circuitry. Heated rear window relay. Heated rear window grid. | GO to PINPOINT TEST F . |
| The one-touch up/down feature is inoperative | Driver window control switch. | INSTALL a new driver window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation. |
SYMPTOM CHART
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Scheme 25
Scheme 26
Scheme 27
Note. Any breaks longer than 25 mm (1 inch) in one grid cannot be repaired. The back window glass must be replaced. Breaks equal to or shorter than 25 mm (1 inch) the heated back window grid wire can be successfully repaired by using the following procedure.
Scheme 28
- Obtain the following repair kit: Repair Kit (50-25-0584-0029).
- The vehicle should be allowed to reach 16°C (60°F) or above.
- Clean the repair area with denatured alcohol.
- Place the grid line mask over the break aligning the cut-out slots on either side of the repair area.
- Apply the epoxy to the repair area.
- Remove the mask without disturbing the epoxy.
- Use the special tool to heat the repair area for 1 to 2 minutes at a distance of about 25-50 mm (1-2 inches). This procedure should heat the repair area to approximately 149°C (300°F).
- The heated back window may be energized immediately after the repair. Optimum hardness and adhesion will occur after 24 hours. Do not disturb the repair area until that time.
Scheme 29
- Obtain the following repair kit: Repair Kit (50-25-0584-0029).
- The vehicle should be allowed to reach 16°C (60°F) or above.
- Clean the area with denatured alcohol.
- Apply the epoxy to the repair area.
- Hold the terminal in place on the bus bar with an appropriate tool.
- Apply epoxy to the repair area.