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 HTR - A/C Fuse 12 at IP fuse block. Is the fuse operational? | -- | Go to Step 4 | Go to Step 3 |
3 |
Did you complete the repair? | -- | Go to Step 14 | -- |
4 | Inspect RR Heat A/C Fuse at the Underhood Fuse Block. Is the fuse operational? | -- | Go to Step 6 | Go to Step 5 |
5 |
Did you complete the repair? | -- | Go to Step 14 | -- |
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 8 |
7 | Inspect for a poor connection at the rear A/C resistor pack. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Does a poor connection exist? | -- | Go to Step 13 | Go to Step 9 |
8 | Using a test lamp backprobe from the rear A/C switch CKT 1176 (YEL) cavity F to ground. Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 11 |
9 | Replace the rear A/C resistor pack. Refer to Auxiliary Blower Motor Resistor Replacement in Heating, Ventilation, and Air Conditioning. Did you complete the replacement? | -- | Go to Step 14 | -- |
10 | Repair the open in CKT 1176 (YEL). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 14 | -- |
11 | Inspect for a poor connection at the rear A/C switch. Refer to Wiring Repairs in Wiring Systems. Did you find a poor connection? | -- | Go to Step 13 | Go to Step 12 |
12 | Replace the rear A/C switch. Refer to Control Switch Replacement - Auxiliary in Wiring Systems. Did you complete the replacement? | -- | Go to Step 14 | -- |
13 | Repair the poor connection. Refer to Connector Repairs in Wiring Systems. Did you complete the replacement? | -- | Go to Step 14 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
