Circuit Description
The HVAC programmer receives battery voltage through circuit 40 from the I/P fuse block , fuse 9C.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | The circuit is open or shorted. |
Action Taken When the DTC Sets
| • | Code 052 is set. |
| • | The HVAC programmer will not operate. |
Conditions for Clearing the DTC
| • | Using a Scan Tool . |
| • | A history DTC will clear when 40 consecutive ignition cycles have occurred without a malfunction. |
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Was the battery disconnected or recently discharged? | -- | Go to Step 2 | Go to Step 3 | ||||
2 | Use Scan Tool to clear the DTC. Is the DTC clear? | -- | System OK | -- | ||||
3 | Use the Scan Tool in order to clear DTC 052. Does the DTC reset when cleared? | -- | Go to Step 4 | System OK | ||||
4 | Inspect the IP fuse block fuse 9C. Is the fuse OK? | -- | Go to Step 7 | Go to Step 5 | ||||
5 | Check CKT 40 for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Did you find a short? | -- | Go to Step 6 | Go to Step 7 | ||||
6 | Repair the short to ground in CKT 40. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- | ||||
7 |
Refer to Measuring Voltage in Wiring Systems.
Refer to Measuring Voltage in Wiring Systems. Is battery voltage present? | -- | Go to Step 8 | Go to Step 9 | ||||
8 |
Is the repair complete? | -- | System OK | -- | ||||
9 | Repair the open in CKT 40. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- |
