Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Does the test lamp light? | -- | Go to Step 3 | Go to Step 2 |
2 | Locate and repair the open in CKT 190 (RED) wire between the I/P fuse block and the blower relay. Is the repair complete? | -- | System OK | Go to Step 3 |
3 | Connect a test lamp between blower relay terminal 85 and the chassis ground. Does the test lamp light? | -- | Go to Step 5 | Go to Step 4 |
4 | Locate and repair the open in CKT 198 (BRN) wire between the I/P fuse block and the blower relay. Is the repair complete? | -- | System OK | Go to Step 5 |
5 | Connect a test lamp across blower motor terminal A and the chassis ground. Does the test lamp light? | -- | Go to Step 7 | Go to Step 6 |
6 | Locate and repair the open in CKT 191 (GRN) wire between the blower motor and the blower relay. Is the repair complete? | -- | System OK | Go to Step 7 |
7 | Connect a J 39200 DMM across blower motor terminal B and ground. Does the DMM indicate continuity? | -- | Go to Step 8 | Go to Step 9 |
8 | Replace the blower motor. Refer to Blower Motor and Fan Replacement . Is the repair complete? | -- | System OK | Go to Step 9 |
9 | Connect a J 39200 DMM across A/C mode switch connector C3 terminal 5 and the chassis ground. Does the DMM indicate continuity? | -- | Go to Step 10 | Go to Step 11 |
10 | Locate and repair the open circuit between the blower motor and A/C mode switch. Is the repair complete? | -- | System OK | Go to Step 11 |
11 | Connect a J 39200 DMM between A/C mode switch connector C3 terminal 1 and ground. Does the DMM indicate continuity? | -- | Go to Step 12 | Go to Step 13 |
12 | Replace the A/C mode switch. Refer to Control Assembly Replacement . Is the repair complete? | -- | System OK | Go to Step 13 |
13 | Locate and repair the open in CKT 179 (BLK) wire between A/C mode switch connector C3 and ground. Is the repair complete? | -- | System OK | -- |
