Step | Action | Value(s) | Yes | No | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Was the heater-A/C Diagnostic System Check performed? | -- | Go to Step 2 | Go to Diagnostic System Check | ||||||||||||
2 | Inspect the HVAC fuse in the fuse block. Is the HVAC fuse open? | -- | Go to Step 3 | Go to Step 4 | ||||||||||||
3 | Locate and repair a short to ground in circuit 41 (BRN). Refer to Testing for Short to Ground and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 14 | -- | ||||||||||||
4 |
Does the test lamp light? | -- | Go to Step 6 | Go to Step 5 | ||||||||||||
5 | Locate and repair a poor connection or an open in circuit 41 (BRN). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 14 | -- | ||||||||||||
6 |
Does the test lamp light? | -- | Go to Step 9 | Go to Step 7 | ||||||||||||
7 | Inspect for a poor connection or open in circuit 361 (PPL). Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Is there a poor connection or open in the circuit? | -- | Go to Step 8 | Go to Step 12 | ||||||||||||
8 | Locate and repair the poor connection or open in circuit 361 (PPL). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 14 | -- | ||||||||||||
9 |
Does the test lamp light? | -- | Go to Step 10 | Go to Step 13 | ||||||||||||
10 | Use a DMM in order to test for a short to ground on circuit 706 (LT BLU) at the heater-A/C control connector C2, terminal A8. Does the test lamp light? | -- | Go to Step 11 | Go to Step 12 | ||||||||||||
11 | Locate and repair the short to ground in circuit 706 (LT BLU) between the heater-A/C control harness connector and the vacuum/electric solenoid harness connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 14 | -- | ||||||||||||
12 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 14 | -- | ||||||||||||
13 | There is a fault in one of the following areas. Refer to Vacuum Test for further diagnosis.
Is the action complete? | -- | Go to Step 14 | -- | ||||||||||||
14 | Verify that the system operates properly. Does the system operate properly? | -- | System OK | Go to Diagnostic System Check |
