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 fuse block for an open in the HVAC fuse. Did you find an open in the fuse? | -- | Go to Step 3 | Go to Step 4 |
3 | 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 a 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 open in CKT 41 (BRN) between the fuse block terminal D10 and the heater-A/C control harness connector C2 terminal C. 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 open in CKT 1450 (BLK) between the heater-A/C control harness connector C2 terminal K and G200. 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 in order to probe between the right 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 S233 and the right electric actuator harness connector terminal 10. 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 right electric actuator harness connector terminal 7 and G200. 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 |
Is the repair complete? | -- | Go to Step 19 | -- |
14 | Inspect for a short to ground or B+ in CKT 1236 (WHT/BLK) . Does a short exist? | -- | Go to Step 15 | Go to Step 16 |
15 | Repair the short to ground or B+ in CKT 1236 (WHT/BLK). 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 1236 (WHT/BLK). Does a poor connection or open exist? | -- | Go to Step 17 | Go to Step 18 |
17 | Repair the poor connection or open in CKT 1236 (WHT/BLK). 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 |
