Pinpoint Test C: 4X4 Control Module Received No/Invalid Data From Pcm

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Conduct Steps 1 through 7 outlined in Inspection and Verification prior to performing this test.

C1 CHECK THE THROTTLE POSITION SENSOR
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: PID/DATA Monitor and Record
- Monitor the throttle position (TP) sensor while pressing down and releasing the accelerator pedal.
- Does the throttle position agree with the accelerator pedal position?
1. YES : The system is operating correctly at this time. CLEAR the DTCs. REPEAT the self-test.
2. NO : REFER to INTRODUCTION - GASOLINE ENGINES or INTRODUCTION -- HYBRID ENGINES article for further diagnosis to the electronic engine controls.