Pinpoint Test AX: Exhaust Gas Recirculation Throttle Control : Introduction: Detection/Management
The PCM continuously monitors the intake throttle system. A DTC is set when a circuit fault is detected, there is a difference between commanded and actual EGRTP, the closed position is less than the minimum voltage of 3.85 volts at key on or the open position is greater than the minimum voltage of 0.93 volts at key on.
NOTE:
The PCM harness connectors must be properly seated and the connector latch properly attached to eliminate possible driveability concerns or a no-start condition. Installing PCM connectors on an angle may cause an improper connection, misdiagnosis, and damaged components. Install the connector until the lever pivots and seats itself. Apply light pressure to get the connector into position on the PCM and then fully seat the connector.
NOTE:
Visually inspect the harness connectors for corrosion, damage, proper mating and correct pin tension.
NOTE:
When the PCM is disconnected additional DTCs will be set. Clear all DTCs after restoring the vehicle.