Circuit/System Verification
WARNING: This page is about a different variant/trim than selected.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC P0097, P0098, P0099, P00F4, P00F5, P00F6, P0102, P0103, P0112, P0113, P0114, P0641, P0651, P0697, P06A3 is not set.
- If any of the DTCs are set
Refer to : Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step : If none of the DTCs are set
- If any of the DTCs are set
- Verify the following parameters are within 25°C (45°F) of each other :
- Start-Up IAT Sensor 1
- Start-Up IAT Sensor 2
- Start-Up ECT
- If not in the specified range
Refer to : Circuit/System Testing
- Go to next step : If in the specified range
- Engine - Idling - At normal operating temperature
- Verify the following parameters are within 55°C (99°F) of each other :
- IAT Sensor 1
- IAT Sensor 2
- If not in the specified range or does not change
Refer to : Circuit/System Testing
- Go to next step : If in the specified range and changes
- Verify the appropriate scan tool parameter :
- IAT Sensor 1
- IAT Sensor 2
- Wiggle the harness and connector : B75C Multifunction Intake Air Sensor
- Wiggle the harness and connector : K20 Engine Control Module
- If the value spikes or drops out
Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)
- Go to next step : If the value does not spike or drop out
- All OK.
NOTE:
To minimize the effects of residual engine heat and heating elements inside the sensor, perform step 3 of this procedure only if the ignition has been Off for longer than 8 h.