Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the HVAC system operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Inspect the fuse block to determine if the HVAC fuse is open. Is the HVAC fuse open? | -- | Go to Step 3 | Go to Step 6 |
3 |
Does the test lamp light? | -- | Go to Step 4 | Go to Step 5 |
4 | Locate and repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | -- |
5 |
Does the test lamp light? | -- | Go to Step 10 | Go to Step 9 |
6 |
Does the test light illuminate? | -- | Go to Step 7 | Go to Step 10 |
7 | Use a test lamp to probe between the blower motor connector terminal A and terminal B. Does the test light illuminate? | -- | Go to Step 8 | Go to Step 11 |
8 | Replace the blower motor. Refer to Blower Motor and Fan Replacement . Is the repair complete? | -- | Go to Step 13 | -- |
9 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 13 | -- |
10 |
Does the test light illuminate? | -- | Go to Step 11 | Go to Step 12 |
11 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | Go to Step 13 | -- |
12 | Locate and repair a poor connection or an open in CKT 150 (BLK) between the blower motor resistor connector C 1 terminal E and G200. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs 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 |
