Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Is the measured voltage within the specified range? | 4-6 V | Go to Step 2 | Go to Step 3 |
2 | Use a DMM in order to measure the voltage between the ambient outside air temperature sensor harness connector terminal A (circuit 735) and terminal B (circuit 61). Is the measured voltage within the specified range? | 4-6 V | Go to Step 8 | Go to Step 9 |
3 |
Is the measured voltage within the specified range? | 4-6 V | Go to Step 5 | Go to Step 4 |
4 |
Is the resistance less than the specified value? | 0.5 ohms | Go to Step 7 | Got to Step 6 |
5 | Locate and repair a poor connection or an open in circuit 735 (LT GRN/BLK) between connector C 120 and the ambient outside air sensor harness connector terminal A. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs In Wiring Systems. Is the repair complete? | -- | Go to Step 10 | -- |
6 | Locate and repair a poor connection or an open in circuit 735 (LT GRN/BLK) between the heater-A/C control harness connector and connector C 120. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs In Wiring Systems. Is the repair complete? | -- | Go to Step 10 | -- |
7 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 10 | -- |
8 | Replace the ambient outside temperature sensor. Refer to Ambient Temperature Sensor Replacement . Is the repair complete? | -- | Go to Step 10 | -- |
9 | Locate and repair a poor connection or an open in circuit 61 (YEL) between the ambient outside temperature sensor harness connector terminal B and S 258. Is the repair complete? | -- | Go to Step 10 | -- |
10 | Verify that the system operates properly. Does the system operate properly ? | -- | System OK | Go to Diagnostic System Check |
