Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the HVAC operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Inspect the HI BLOWER fuse in the fuse block. Is the HI BLOWER fuse open? | -- | Go to Step 3 | Go to Step 6 |
3 | Inspect for a short to ground in circuit 40 (ORN). Refer to Testing for Short to Ground in Wiring Systems. Is a short to ground in the circuit? | -- | Go to Step 4 | Go to Step 5 |
4 | Locate and repair the short to ground in circuit 40 (ORN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | -- |
5 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement in Heating, Ventilation, and Air Conditioning . Is the repair complete? | -- | Go to Step 13 | -- |
6 |
Does the test lamp light? | -- | Go to Step 7 | Go to Step 12 |
7 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 9 |
8 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement in Heating, Ventilation, and Air Conditioning . Is the repair complete? | -- | Go to Step 13 | -- |
9 |
Is an open or short to ground in the circuit? | -- | Go to Step 9 | Go to Step 10 |
10 | Locate and repair the fault in circuit 52 (ORN). Refer to Circuit Testing in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | -- |
11 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 13 | -- |
12 | Locate and repair the fault in circuit 40 (ORN). Refer to Circuit Testing in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | -- |
13 | Verify that the system operates properly. Does the system operate properly? | -- | System OK | Go to Symptoms |
