Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Exchange the blower motor relay with a known good relay from the underhood junction block. Does the blower motor operate? | -- | Go to Step 2 | Go to Step 3 |
2 | Replace the faulty relay. Is the repair complete? | -- | -- | |
3 |
Does the voltage measured equal the specified value? | B+ | Go to Step 6 | Go to Step 4 |
4 |
Does the voltage measured equal the specified value? | B+ | Go to Step 7 | Go to Step 5 |
5 | Replace the heater A/C control assembly. Refer to Control Assembly Replacement . Is the repair complete? | -- | -- | |
6 | Using a test lamp, backprobe the underhood junction block connector C3 between terminal D9 and terminal A10. Does the test lamp light? | -- | Go to Step 8 | Go to Step 9 |
7 | Repair the open in CKT 52 between the heater A/C control assembly and the underhood junction block. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
8 | Replace the underhood junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems. Is the repair complete? | -- | -- | |
9 | Repair the open in CKT 150 between the underhood junction block and ground splice pack G201. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
