Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the HVAC Blower Controls System Check performed? | -- | Go to Step 2 | |
2 |
Does the test lamp light? | -- | Go to Step 3 | Go to Step 6 |
3 | Connect an unpowered test lamp between the blower motor resistor/relay connector, cavity C for CKT 150 (BLK), and B+. Does the test lamp light? | -- | Go to Step 4 | Go to Step 9 |
4 |
Is continuity present? | -- | Go to Step 5 | Go to Step 10 |
5 | Connect a J 39200 between the blower motor resistor/relay, pin C, and the blower motor connector, cavity A for CKT 150 (BLK). Is continuity present? | -- | Go to Step 11 | Go to Step 10 |
6 |
Does the test lamp light? | -- | Go to Step 7 | Go to Step 8 |
7 |
Is continuity present? | -- | Go to Step 12 | Go to Step 13 |
8 |
Does the test lamp light? | -- | Go to Step 12 | Go to Step 14 |
9 | Repair the open in CKT 150 (BLK) between the blower motor resistor/relay and ground G103. Refer to Wiring Repairs . Is the repair complete? | -- | -- | |
10 | Replace the blower motor resistor/relay. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | -- | |
11 | Replace the blower motor. Refer to Blower Motor and Fan Replacement . Is the repair complete? | -- | -- | |
12 | Replace the heater and A/C controller. Refer to Control Assembly Replacement . Is the repair complete? | -- | -- | |
13 | Repair the open in CKT 119 (WHT) between heater and A/C controller connector C1 and connector C2. Refer to Wiring Repairs . Is the repair complete? | -- | -- | |
14 | Repair the open in CKT 141 (BRN) between the IP fuse block and the heater and A/C controller connector C2. Refer to Wiring Repairs . Is the repair complete? | -- | -- |
