P0033
DTC P0033
DTC DESCRIPTOR
DTC P0033
Supercharger Boost Solenoid Control Circuit
DIAGNOSTIC FAULT INFORMATION
IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection
CIRCUIT/SYSTEM DESCRIPTION
DTC P0033
Battery voltage is supplied to the Supercharger Boost Solenoid. The control module grounds the Supercharger Boost Solenoid control circuit to close the valve by means of an internal switch called a driver. The scan tool displays the commanded state of the Supercharger Boost Solenoid as ON or OFF. The control module monitors the status of the driver.
CONDITIONS FOR RUNNING THE DTC
- The ignition is ON.
- The system voltage is between 6-18 volts.
- DTC P0033 runs continuously when the above conditions are met.
CONDITIONS FOR SETTING THE DTC
The control module detects that the commanded state of the driver and the actual state of the control circuit do not match, for a minimum of 12 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.
CIRCUIT/SYSTEM VERIFICATION
1. With the ignition ON and the engine OFF, command the Supercharger Boost Solenoid control solenoid ON and OFF with a scan tool.
2. Listen for a click when the valve operates. Verify that both the ON, and the OFF states are commanded.
CIRCUIT/SYSTEM TESTING
1. Turn OFF the ignition.
2. Disconnect the Supercharger Boost Solenoid control solenoid.
3. Turn ON the ignition, with the engine OFF.
4. Probe the battery positive voltage circuit of the Supercharger Boost Solenoid with a test lamp that is connected to a good ground.
- If the test lamp does not illuminate, test the circuit for an open or for a short to ground.
5. Connect a test lamp between the control circuit of the Supercharger Boost Solenoid and the battery positive voltage circuit of the Supercharger Boost Solenoid control at the Supercharger Boost Solenoid harness connector.
- If the test lamp illuminates, test the control circuit of the Supercharger Boost Solenoid for a short to ground.
6. Command the Supercharger Boost Solenoid ON and OFF.
- If the test lamp does not illuminate with the commanded state of the solenoid, test the control circuit of the Supercharger Boost Solenoid for a short to voltage or an open.
- If the circuits and the control module test normal, replace the Supercharger Boost Solenoid.
REPAIR INSTRUCTIONS
IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Boost Control Solenoid Replacement
- Control Module References for powertrain control module (PCM) replacement, setup, and programming Verification Tests