DC3 - Check MAF Harness to PCM For Intermittent Open or Short

- Key Off.

- Disconnect PCM. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, reconnect PCM.

- Key On, Engine Off.

- Connect DVOM between Test Pin 88 (MAF SIG) and Test Pin 36 (MAF RTN) at the breakout box.

- While viewing DVOM, do the following:
- Grasp the vehicle harness closest to the MAF sensor connector.
- Shake and bend a small section of the harness all the way to the dash panel.
- Wiggle, shake and bend the harness from the dash panel to the PCM.

- Is the voltage changing below the minimum 0.39 volts or above the maximum 4.70 volts?

YES -- ISOLATE fault and SERVICE as necessary. RECONNECT all components. Complete PCM reset to clear DTCs. Clearing Diagnostic Trouble Codes

Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- Unable to duplicate and/or identify fault at this time. Go to Pinpoint Test Step Z1 with the following data: MAF PID and list of Possible Causes. Z1 - Intermittent Test Procedure