Circuit/System Verification
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC P0097, P0098, P00EA, P00EB, P0112, P0113, P0117, P0118, P1682, P16A7, P16BC, P2199, P2610 is not set.
- If any of the DTCs are set
- Go to next step: If none 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 IAT Sensor 3
- If not in the specified range
- {Start-Up IAT Sensor 1} Refer to:DTC P0112, P0113, or P0114
- {Start-Up IAT Sensor 2} Refer to:DTC P0097-P0099 or P00F4-P00F6
- {Start-Up IAT Sensor 3} Refer to:DTC P00EA-P00EC
- Go to next step: If in the specified range
- Engine - Idling
- Verify the scan tool parameter: = -39 to 149°C (-38 to 300°F) and changes
- IAT Sensor 1
- IAT Sensor 2
- IAT Sensor 3
- If not in the specified range or does not change
- {IAT Sensor 1 } Refer to:DTC P0112, P0113, or P0114
- {IAT Sensor 2} Refer to:DTC P0097-P0099 or P00F4-P00F6
- {IAT Sensor 3} Refer to:DTC P00EA-P00EC
- Go to next step: If in the specified range and changes
- Verify the appropriate scan tool parameter:
- IAT Sensor 1
- IAT Sensor 2
- IAT Sensor 3
Perform the action while monitoring the parameter:
- Wiggle the harness and connector:B75C Multifunction Intake Air Sensor
- Wiggle the harness and connector: X1 & X3 @ 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.