Circuit/System Verification
- Verify that DTCs P0106, P0107, P0108, P0641, P0651, P1182, P1183, P1184, or P2227, P2228, P2229 are not set.
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- The harness connectors for the following sensors are the same configuration but are not interchangeable.
- Review the engine controls schematics for the BARO sensor and for the SCIP sensor and note the circuit colors.
- Inspect the wiring harness of the BARO sensor for the proper connections.
- Inspect the wiring harness of the SCIP sensor for the proper connections.
- Ignition ON, engine OFF, observe the scan tool SC Inlet Pressure and BARO parameters. Verify the SC Inlet Pressure and BARO sensor parameters are within 5 kPa of each other.
- Ignition ON, observe the scan tool SC Inlet Pressure Sensor parameter. Start the engine, the SC Inlet Pressure Sensor parameter should decrease.
- Verify the integrity of the SCIP and BARO sensors by inspecting for the following conditions:
- Damaged components
- Loose or improper installation
- An air flow restriction
- A cracked or restricted SCIP sensor vacuum hose
- An intake manifold leak
IMPORTANT: