Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the HVAC Blower Controls System Check? | -- | Go to Step 2 | |
2 | Inspect the HTR-A/C fuse 12 at the IP fuse block. Is the fuse operational? | -- | Go to Step 4 | Go to Step 3 |
3 |
Is the repair complete? | -- | -- | |
4 | Inspect the RR Heat A/C fuse at the Underhood Fuse/Relay Center. Is the fuse operational? | -- | Go to Step 6 | Go to Step 5 |
5 |
Is the repair complete? | -- | -- | |
6 |
Did the test lamp light? | -- | Go to Step 7 | Go to Step 8 |
7 | Connect a test lamp J 35616-200 between CKT 1172 (YEL) and CKT 1150 (BLK) at the rear heater blower motor. Did the test lamp light? | -- | Go to Step 9 | Go to Step 11 |
8 |
Did the test lamp light? | -- | Go to Step 12 | Go to Step 13 |
9 | Inspect for a poor connection at the rear heater blower motor. Did you find a poor connection? | -- | Go to Step 10 | Go to Step 14 |
10 | Repair the poor connection. Is the repair complete? | -- | -- | |
11 | Repair the open in CKT 1150 (BLK) between the rear heater motor and ground G301. Is the repair complete? | -- | -- | |
12 | Connect a test lamp J 35616-200 from CKT 141 (BRN) cavity A7 at the A/C relay (rear) to ground. Did the test lamp light? | -- | Go to Step 15 | Go to Step 16 |
13 | Repair the open in CKT 742 (RED) between the rear heat - A/C relay (rear) (underhood fuse-relay center) and the rear heat - A/C maxi fuse M2 (underhood fuse-relay center). Is the repair complete? | -- | -- | |
14 | Replace the rear heater blower motor. Refer to Auxiliary Blower Motor Replacement in Heating and Ventilation (Non-A/C). Is the repair complete? | -- | -- | |
15 | Connect a test lamp J 35616-200 from CKT 141 (BRN) cavity A7 to CKT 850 (BLK) cavity B9 at the A/C relay (rear). Did the test lamp light? | -- | Go to Step 17 | Go to Step 18 |
16 | Repair the open in CKT 141 (BRN) between the A/C relay (rear) and the instrument panel fuse block. Is the repair complete? | -- | -- | |
17 |
Did the test lamp light? | -- | Go to Step 19 | Go to Step 20 |
18 | Repair the open in CKT 850 (BLK) between the A/C relay (rear) and ground G104. Is the repair complete? | -- | -- | |
19 | Use a test lamp J 35616-200 in order to backprobe from the rear heater switch CKT 1923 (ORN) cavity G to ground. Did the test lamp light? | -- | Go to Step 21 | Go to Step 22 |
20 | Replace the A/C relay (rear). Refer to Blower Motor Relay Replacement . Is the repair complete? | -- | -- | |
21 | Use a test lamp J 35616-200 in order to backprobe from the rear heater switch CKT 1924 (WHT) cavity A to ground. Did the test lamp light? | -- | Go to Step 23 | Go to Step 24 |
22 | Repair the open in CKT 1923 (ORN) between the rear heater switch and the A/C relay (rear). Is the repair complete? | -- | -- | |
23 | Use a test lamp J 35616-200 in order to backprobe from the rear heater resistor pack CKT 1924 (WHT) cavity B to ground. Did the test lamp light? | -- | Go to Step 25 | Go to Step 26 |
24 | Replace the rear heater switch. Refer to Control Switch Replacement - Auxiliary in Heating and Ventilation (Non-A/C). Is the repair complete? | -- | -- | |
25 | Repair the open in CKT 1172 (YEL) between the rear heater resistor pack and the rear heater blower motor. Is the repair complete? | -- | -- | |
26 | Repair the open in CKT 1924 (WHT), CKT 1925 (RED) and CKT 1926 (DK BLU) between the rear heater switch and the rear heater resistor pack. Is the repair complete? | -- | -- |
