Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the HVAC system operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Inspect the HVAC fuse for an open. Is the fuse open? | -- | Go to Step 3 | Go to Step 4 |
3 | Locate and repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
4 |
Is the measured voltage within the specified value? | B+ | Go to Step 8 | Go to Step 5 |
5 | Use the DMM to probe between the heater-A/C control harness connector C2 terminal C and ground. Is the measured voltage within the specified value? | B+ | Go to Step 7 | Go to Step 6 |
6 | Locate and repair a poor connection or an open in CKT 41 (BRN) between the fuse block terminal D10 and the heater/C control harness connector C2 terminal C.. repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
7 | Locate and repair a poor connection or an open in CKT 1450 (BLK) between the heater-A/C control harness connector C2 terminal K and G200. repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
8 |
Is the measured voltage within the specified value? | B+ | Go to Step 12 | Go to Step 9 |
9 | Use a DMM to probe between the left electric actuator harness connector terminal 10 and ground. Is the measured voltage within the specified value? | B+ | Go to Step 11 | Go to Step 10 |
10 | Locate and repair a poor connection or an open in CKT 41 (BRN) between splice S233 and the left electric actuator harness connector terminal 10. repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
11 | Locate and repair a poor connection or an open in CKT 1450 (BLK) between the left electric actuator harness connector terminal 7 and G200. repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
12 |
Is the measured voltage within the specified value? | 1-12 V | Go to Step 13 | Go to Step 14 |
13 | Replace the left electric actuator. Refer to Temperature Actuator Replacement (LH) . Is the repair complete? | -- | Go to Step 19 | -- |
14 | Inspect for a short to ground or B+ in CKT 1199 (DK BLU). Does a short exist? | -- | Go to Step 15 | Go to Step 16 |
15 | Repair the short to ground or B+ in CKT 1199 (DK BLU). repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
16 | Inspect for a poor connection or an open in CKT 1199 (DK BLU). Does a poor connection or open exist? | -- | Go to Step 17 | Go to Step 18 |
17 | Repair the poor connection or open in CKT 1199 (DK BLU). repair a short to ground in CKT 41 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
18 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 19 | -- |
19 | Verify that the system operates properly. Does the system operate properly? | -- | System OK | Go to Symptoms |
