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) between S 233 and the vacuum/electric solenoid. 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 366 (LT GRN/BLK). 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 366 (LT GRN/BLK). 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 between the heater A/C control harness connector terminal D 10 and the vacuum/electric solenoid harness connector, terminal 2. Is there a short to ground? | -- | Go to Step 10 | G to Step 11 |
10 | Locate and repair the short to ground in circuit 362 (RED). Is the repair complete? | -- | System OK | -- |
11 | Replace the heater-A/C control. For manual systems refer to Control Assembly Replacement and for automatic systems refer to Control Assembly Replacement in Instrumant Panel, Gauges and Console. Is the repair complete? | -- | System OK | -- |
12 | Replace the vacuum/electric solenoid. Refer to Vacuum Electrical Solenoid Replacement in Instrument Panel, Guages and Console Is the repair complete? | -- | System OK | -- |
