Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Has the Heater Blower Controls System Check been performed? | -- | Go to Step 2 | |
2 |
Is continuity present? | -- | Go to Step 4 | Go to Step 3 |
3 | Locate and repair the open in CKT 150 (BLK) between the Auxiliary HVAC Control Module, Front switch and ground G200. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
4 | Connect a DMM (continuity) between pin B and pins E, F and D while rotating the blower switch through Low, Med, and High. Is continuity present in all modes? | -- | Go to Step 6 | Go to Step 5 |
5 | Replace the Auxiliary HVAC Control Module, Front switch. Refer to Control Switch Replacement - Auxiliary . Is the repair complete? | -- | -- | |
6 |
Is continuity present? | -- | Go to Step 8 | Go to Step 7 |
7 | Locate and repair the open in CKT 1172 (YEL) between splice S402 and the blower motor. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
8 | Connect a DMM (continuity) between cavity B of the blower motor connector and ground. Is continuity present? | -- | Go to Step 9 | Go to Step 10 |
9 | Replace the Auxiliary Blower Motor. Refer to Auxiliary Blower Motor Replacement . Is the repair complete? | -- | -- | |
10 | Locate and repair the open in CKT 150 (BLK) between the blower motor and ground G400. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
