Circuit/System Verification
- Verify that the following DTCs are not set:
- 5 V reference circuits
- Camshaft position system performance
- Engine controls ignition relay circuits
- Ignition circuits-Body control module (BCM)
- Verify that restrictions do not exist in the exhaust system. Refer to Restricted Exhaust
.
- Engine operating at idle, observe the scan tool MAF Sensor parameter. The reading should be between 2,000-3,800 Hz depending on the ECT.
- A wide open throttle (WOT) acceleration from a stop should cause the MAF Sensor parameter on the scan tool to increase rapidly. This increase should be from 2-6 g/s at idle to greater than 180 g/s at the time of the 1-2 shift.
- Use the scan tool and compare the MAF Sensor parameter to a known good vehicle, under various operating conditions.
- Verify the proper operation of the ECT and IAT sensors. A skewed or stuck ECT or IAT sensor will cause the calculated models to be inaccurate and may cause this DTC to run when it should not. Refer to Temperature Versus Resistance
.
- Verify the proper operation of the MAP sensor. A skewed MAP sensor will cause the BARO value to be inaccurate. Refer to Diagnostic Trouble Code (DTC) List - Vehicle
DTC P0106 for further diagnosis.
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.