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 | Check 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 Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | -- |
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 1236 (WHT/BLK). Is the repair complete? | -- | Go to Step 9 | -- |
6 | Use a test lamp connected to B+ to probe the Temperature Actuator connector terminal 7 Does the test lamp light? | Go to Step 8 | Go to Step 7 | |
7 | Repair the fault in circuit 1450 (BLK). Is the repair complete? | -- | Go to Step 9 | -- |
8 | There is a fault in the vacuum source, vacuum actuators, vacuum hoses to actuators, linkage from actuators to values, or faulty valves. Refer to Vacuum System for further diagnosis. Is the action complete? | -- | Go to Step 9 | -- |
9 | Verify that the system operates properly. Does the system operate properly? | -- | System OK | Go to Symptoms |
