Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Heater Blower Controls System Check performed? | -- | Go to Step 2 | |
2 |
Does the test lamp light? | -- | Go to Step 6 | Go to Step 3 |
3 | Connect a test lamp between HVAC control connector C4 cavity A and ground. Does the test lamp light? | -- | Go to Step 4 | Go to Step 5 |
4 | Locate and repair the open in CKT 52 (ORN). Is the repair complete? | -- | -- | |
5 | Replace the HVAC controller. Refer to Control Assembly Replacement . Is the repair complete? | -- | -- | |
6 | Connect a test lamp between blower motor relay connector cavity 86 (CKT 52) and cavity 85 (CKT 850). Does the test lamp light? | -- | Go to Step 8 | Go to Step 7 |
7 | Locate and repair the open in CKT 850 (BLK) between the blower motor relay and S118. Is the repair complete? | -- | -- | |
8 | Connect a fused jumper wire to blower motor relay connector cavity 87 (CKT 540) and cavity 30 (CKT 65). Does the blower motor operate? | -- | Go to Step 9 | Go to Step 10 |
9 | Replace the blower motor relay. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | -- | |
10 | Inspect the HVAC fuse at the underhood bussed electrical center (UBEC). Is the fuse open? | -- | Go to Step 12 | Go to Step 11 |
11 | Locate and repair the open or high resistance in CKT 540 (ORN). Is the repair complete? | -- | -- | |
12 | Disconnect the blower motor relay. Remove HVAC fuse. Install the J 8681-A . Does the circuit breaker cycle? | -- | Go to Step 13 | Go to Step 14 |
13 |
Is the repair complete? | -- | -- | |
14 |
Is the repair complete? | -- | -- |
