Circuit Description
The PCM monitors the A/C refrigerant pressure.
The PCM sends a message to the SBM containing the A/C refrigerant pressure.
When you turn the A/C ON, the SBM determines if the A/C clutch should be on or off based on the pressure data from the PCM.
The SBM sends a message over the class 2 serial data line to the PCM that the A/C clutch may be turned on.
Conditions for Setting the DTC
The SBM determines that the A/C refrigerant pressure is too high based on the message from the PCM over the class 2 serial data line.
Action Taken When the DTC Sets
| • | DTC B1324 stores in the SBM memory. |
| • | No driver warning message displays for this DTC. |
Conditions for Clearing the DTC
| • | The SBM determines that the A/C pressure is within range. |
| • | A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present. |
Diagnostic Aids
This DTC will set if a condition exists in the A/C system that might cause a high pressure condition. An intermittent short to ground in CKT 1732 may cause an intermittent malfunction to occur.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Body Control Module Diagnostic System Check performed? | -- | Go to Step 2 | |
2 | Is PCM DTC PO530 also set? | -- | Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L | Go to Step 3 |
3 |
Is the DTC set? | -- | Go to Step 4 | |
4 |
Did you complete the repair? | -- | Go to Step 5 | -- |
5 |
Did you complete the repair? | -- | -- |
