Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
DEFINITION: Only the rear defogger grid is inoperative, the outside heated rearview mirrors are operating when the rear defogger button is depressed. DTCs B0432, B0433, U1255 by the BCM or U1153 by the Instrument Panel Cluster (IPC) has not been set. | ||||
1 | Where you sent here from the Rear Defogger and Heated Mirror Diagnostic System Check? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
2 | Are all of the rear window defogger grid lines inoperative? | Go to Testing Grid Lines | ||
3 | Inspect the RR DEFOG Maxifuse® #48. Is the fuse open? | |||
4 |
Is continuity present across these terminals? | |||
5 |
Is the resistance infinite? | Refer to BCM DTC B0432 | ||
6 | Repair a short to ground in CKT 293. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
7 |
Is the voltage within the specified values? | 10.0-14.0V | ||
8 | Repair an open or high resistance in CKT 293. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
9 |
Is continuity present in CKT 350 between the Rear Window Defogger Grid connector and G301? | |||
10 | Repair an open or high resistance in CKT 350. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
11 |
Is the voltage within the specified values? | 10.0-14.0V | ||
12 | Replace the BCM. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
13 | Replace the RR DEFOG Mini Relay #44. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check |
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
DEFINITION: Only the rear defogger grid is inoperative, the outside heated rearview mirrors are operating when the rear defogger button is depressed. DTCs B0432, B0433, U1255 by the BCM or U1153 by the Instrument Panel Cluster (IPC) has not been set. | ||||
1 | Where you sent here from the Rear Defogger and Heated Mirror Diagnostic System Check? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
2 | Are all of the rear window defogger grid lines inoperative? | Refer to Testing Grid Lines | ||
3 | Inspect the RR DEFOG Maxifuse® #48. Is the fuse open? | |||
4 |
Is continuity present across these terminals? | |||
5 |
Is the resistance infinite? | Refer to BCM DTC B0432 | ||
6 | Repair a short to ground in CKT 293. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
7 |
Is the voltage within the specified values? | 10.0-14.0V | ||
8 | Repair an open or high resistance in CKT 293. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
9 |
Is continuity present in CKT 350 between the Rear Window Defogger Grid connector and G301? | |||
10 | Repair an open or high resistance in CKT 350. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
11 |
Is the voltage within the specified values? | 10.0-14.0V | ||
12 |
Does the Defogger ON Indicator light illuminate? | |||
13 | Replace the HVAC Control Head. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
14 |
Is the CKT 681 continuous between these two connectors? | |||
15 | Repair an open or high resistance in CKT 681. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
16 | Replace the BCM. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check | ||
17 | Replace the RR DEFOG Mini Relay #44. Is the repair complete? | Go to Rear Defogger and Heated Mirror Diagnostic System Check |