Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open. | ||||
1 | Exchange the Daytime Running Lamps (DRL) relay with a known good relay. Do the DRLs light? | -- | ||
2 | Replace the DRL relay. Is the repair complete? | -- | -- | |
3 |
Does the test lamp light? | -- | ||
4 | Connect the test lamp between terminal 1 and terminal 5 of the DRL relay harness connector. Does the test lamp light? | -- | ||
5 | Repair the open in CKT 640, between the fuse block and the DRL relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
6 |
Does the DRL status indicate ACTIVE on the scan tool? | -- | ||
7 | Repair the open in CKT 150 between the DRL relay and ground G102. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
8 |
Do the DRLs light? | -- | ||
9 | Test CKT 592 for an open. Was an open found? | -- | ||
10 | Repair the open in CKT 592 between the DRL relay and the instrument cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
11 | Repair open in CKT 592. Refer to Wiring Repairs in wiring systems. Is the repair complete? | -- | -- | |
12 | Measure the voltage between terminal B4 (Chevrolet) or terminal B3 (Pontiac) of the instrument panel cluster harness connector and ground with the J 39200 Digital Multimeter (DMM). Does the voltage measured equal the specified value? | battery voltage | ||
13 | Repair the open in CKT 1200 between splice S243 and the instrument panel cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
14 | Measure the voltage between terminal B8 (Chevrolet) or terminal B7 (Pontiac) of the instrument panel cluster harness connector and ground with the J 39200 Digital Multimeter (DMM). Does the voltage measured equal the specified value? | battery voltage | ||
15 |
Does the park brake input toggle? | -- | ||
16 | Repair the malfunction in the park brake circuit (1134). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
17 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | -- | |
18 | Repair the open in CKT 1201 between splice S244 and the instrument panel cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
