Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Check the HVAC fuse in the fuse block. Is the HVAC fuse open? | -- | Go to Step 2 | Go to Step 3 |
2 | Locate and repair a short to ground in circuit 41 (BRN). Is the repair complete? | -- | System OK | -- |
3 |
Does the test lamp light? | -- | Go to Step 5 | Go to Step 4 |
4 | Locate and repair a poor connection or an open in circuit 41 (BRN). Is the repair complete? | -- | System OK | -- |
5 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 6 |
6 | Check for poor connection or open in circuit 361 (PPL). Is there a poor connection or open in the circuit? | -- | Go to Step 7 | Go to Step 11 |
7 | Locate and repair the fault in circuit 361 (PPL). Is the repair complete? | -- | System OK | -- |
8 |
Does the test lamp light? | -- | Go to Step 9 | Go to Step 12 |
9 | Use a DMM to test for a short to ground on circuit 706 (LT BLU) at the heater A/C control connector C 2, terminal A 8. Does the test lamp light? | -- | Go to Step 10 | Go to Step 11 |
10 | 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. Is the repair complete? | -- | System OK | -- |
11 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | System OK | -- |
12 | There is a fault in the vacuum/electric solenoid, the vacuum source, the vacuum actuators, the vacuum hoses to actuators, the linkage from actuators to values, or faulty valves. Refer to Vacuum System for further diagnosis. Is the action complete? | -- | System OK | -- |
