Circuit Description
The automatic level control adjusts the vehicle suspension ride height. The rear integration module (RIM) determines the height of the rear of the vehicle based on the voltage from the automatic level control sensor. The RIM raises and lowers the rear of the vehicle in order to keep the vehicle level. The automatic level control is also equipped with an accessory switch for inflation of off vehicle accessories.
Conditions for Running the DTC
| • | The RIM must be powered up. |
| • | DTC B1327 is not stored as current. |
Conditions for Setting the DTC
The Accessory inflator switch input is found to be shorted to ground or stuck closed for 10 seconds.
Action Taken When the DTC Sets
When the accessory inflater switch fault is detected the accessory inflator switch input is ignored and the accessory inflator function will be disabled.
Conditions for Clearing the DTC
The RIM does not detect a failure during the self test.
Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections and Testing for Electrical Intermittents in Wiring Systems.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Automatic Level Control Schematics | |||
1 | Did you perform the Automatic Level Control Diagnostic System Check? | Go to Step 2 | |
2 |
Does the DTC reappear within 10 seconds? | Go to Step 3 | Go to Diagnostic Aids |
Does the scan tool indicate idle? | Go to Step 6 | Go to Step 4 | |
4 | Test the automatic level control accessory inflator switch input circuit for a short. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections/terminal tension at the rear integration module (RIM). Refer to Testing for Electrical Intermittents and Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
6 | Inspect for poor connections/ terminal tension at the automatic level control accessory inflator switch harness. Refer to Testing for Electrical Intermittents and Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
7 | Replace the RIM. Refer to Rear Integration Body Control Module Replacement . Did you complete the replacement? | Go to Step 10 | -- |
8 | Replace the automatic level control accessory inflator switch. Refer to Automatic Level Control Inflator Air Switch Replacement . Did you complete the replacement? | Go to Step 9 | -- |
9 | Clear the DTCs using the scan tool. Did you complete the action? | Go to Step 10 | -- |
10 | Operate the vehicle within the conditions for running the DTCs as specified in the supporting text. Does the DTC reset? | Go to Step 2 | -- |
