Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

Verify that DTC P0641, P0651 or P0697 is not set.
- If the DTC sets
  If set, refer to DTC P0641, P0651 or P0697 .
- If the DTC does not set
Ignition ON, verify the scan tool BARO Sensor and BARO Sensor 2 parameters are within the range specified in the Altitude Versus Barometric Pressure table.
- If BARO Sensor and BARO Sensor 2 parameters are not in range
  Refer to DTC P2228 or P2229 for BARO Sensor.
  
  Refer to DTC P227B for BARO Sensor 2.
- If BARO Sensor and BARO Sensor 2 parameters are within range
Verify the scan tool MAP Sensor parameters are within the range specified in the Altitude Versus Barometric Pressure table.
- If the MAP Sensor pressure is not in range
  Refer to Circuit/System Testing .
- If the MAP Sensor pressure is within range
Engine idling, slowly increase the engine speed to 2000 RPM by commanding the throttle valve to open. Then allow the engine speed to return to a stable idle.
Verify the scan tool MAP Sensor parameter smoothly increments to a higher value at 2000 RPM and then returns to near BARO at idle speed.
- If parameter is not as specified or does not change smoothly
  Refer to Circuit/System Testing .
- If parameter is as specified and does change smoothly
Verify that the engine is in good mechanical condition. Refer to Symptoms - Engine Mechanical .
- If the engine is not in good mechanical condition
  Correct the condition as necessary.
- If the engine is in good mechanical condition
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify a DTC does not set.
- If the DTC sets
  Refer to Circuit/System Testing .
- If the DTC does not set
All OK.