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 |
Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 4 |
3 | Repair the open in CKT 1924 (WHT). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 7 | -- |
4 | Inspect for a poor connection at the rear heater switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find a poor connection? | -- | Go to Step 6 | Go to Step 5 |
5 | Replace the rear heater switch. Refer to Control Switch Replacement - Auxiliary in Heating, Ventilation, and Air Conditioning. Did you complete the replacement? | -- | Go to Step 7 | -- |
6 | Repair the poor connection. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 7 | -- |
7 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
