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 13 | Go to Step 3 | ||||||
3 | Connect an unpowered test lamp between the auxiliary blower motor resistor connector, cavity A for CKT 1176 (YEL), and ground. Does the test lamp light? | -- | Go to Step 14 | Go to Step 4 | ||||||
4 | Connect an unpowered test lamp between the auxiliary blower motor resistor connector, cavity C for CKT 1072 (LT BLU), and ground. Does the test lamp light? | -- | Go to Step 15 | Go to Step 5 | ||||||
5 |
Does the auxiliary blower motor operate? | -- | Go to Step 6 | Go to Step 8 | ||||||
6 | Disconnect the auxiliary blower motor switch connector. Does the auxiliary blower motor cease operating? | -- | Go to Step 16 | Go to Step 7 | ||||||
7 |
Is continuity present? | -- | Go to Step 17 | Go to Step 18 | ||||||
8 | Connect the auxiliary blower motor medium speed relay connector. Does the auxiliary blower motor operate? | -- | Go to Step 9 | Go to Step 11 | ||||||
9 | Disconnect the auxiliary blower motor switch connector. Does the auxiliary blower motor cease operating? | -- | Go to Step 16 | Go to Step 10 | ||||||
10 |
Is continuity present? | -- | Go to Step 19 | Go to Step 20 | ||||||
11 | Disconnect the auxiliary blower motor switch connector. Connect a J 39200 between the auxiliary blower motor switch connector, cavity D, and cavity Is continuity present? | -- | Go to Step 21 | Go to Step 12 | ||||||
12 | Connect a J 39200 between the auxiliary blower motor switch, pin D, and pin B. Is continuity present? | -- | Go to Step 16 | Go to Step 22 | ||||||
13 | Repair the short to voltage in CKT 1172 (YEL) between the following components:
Refer to Wiring Repairs . Is the repair complete? | -- | -- | |||||||
14 | Repair the short to voltage in CKT 1176 (YEL) between the auxiliary blower motor resistor connector and the auxiliary blower motor low speed relay connector: Refer to Wiring Repairs . Is the repair complete? | -- | -- | |||||||
15 | Repair the short to voltage in CKT 1072 (LT BLU) between the auxiliary blower motor resistor connector and the auxiliary blower motor medium speed relay connector. Refer to Wiring Repairs . Is the repair complete? | -- | -- | |||||||
16 | Replace the auxiliary blower motor switch. Refer to one of the following procedures: Is the repair complete? | -- | -- | |||||||
17 | Repair the short to ground in CKT 60 (YEL) / 1926 (DK BLU) between the auxiliary blower motor switch connector and the auxiliary blower motor low speed relay connector. Refer to Wiring Repairs . Is the repair complete? | -- | -- | |||||||
18 | Replace the auxiliary blower motor low speed relay. Is the repair complete? | -- | -- | |||||||
19 | Repair the short to ground in CKT 63 (TAN) / 1925 (RED) between the auxiliary blower motor switch connector and the auxiliary blower motor medium speed relay connector. Refer to Wiring Repairs . Is the repair complete? | -- | -- | |||||||
20 | Replace the auxiliary blower motor medium speed relay. Is the repair complete? | -- | -- | |||||||
21 | Repair the short to ground in CKT 52 (ORN ) / 1924 (WHT) between the auxiliary blower motor switch connector and the auxiliary blower motor high speed relay connector. Refer to Wiring Repairs . Is the repair complete? | -- | -- | |||||||
22 | Replace the auxiliary blower motor high speed relay. Is the repair complete? | -- | -- |