Circuit/System Verification
- Verify the integrity of the air induction system by inspecting for the following conditions:
- A restricted or collapsed air intake duct
- A misaligned or damaged air intake duct
- A dirty or deteriorating air filter element
- Any objects blocking the air inlet probe of the MAF/IAT sensor
- Any contamination or debris on the sensing elements in the probe of the MAF/IAT sensor
- Any water intrusion in the induction system
- Any vacuum leak downstream of the MAF/IAT sensor
- An intake manifold leak
- A MAP sensor seal that is missing or damaged
- A BARO sensor that is skewed or stuck
- A skewed or stuck ECT or IAT sensor-refer to Temperature Versus Resistance
.
- Any type of restriction in the exhaust system-Refer to Restricted Exhaust
.
- Ignition ON, observe the MAP Sensor parameter with a scan tool. Start the engine. The MAP Sensor parameter should decrease.
- If the MAP Sensor kPa parameter does not decrease, refer to DTC P0106 .
- Ignition ON, depress the accelerator pedal completely and observe the TP Indicated Angle parameter with a scan tool. The TP Indicated Angle parameter should read 98-100 percent.
- Ignition ON, perform a snapshot of the throttle actuator control (TAC) data while performing the following action. Refer to Scan Tool Snapshot Procedure
.
- Slowly depress the accelerator pedal to WOT position, then slowly release the pedal. Exit from the snapshot and review the data.
- Compare the TP Sensor 1 and the TP Sensor 2 parameters, frame by frame. The difference between the parameters should be less than 4 percent.