DC13 - Check MAF RTN Circuit Continuity

- Key Off.

- MAF sensor disconnected.

- Breakout box installed, PCM disconnected.

- Measure the resistance between MAF RTN circuit at the MAF sensor vehicle harness connector and Test Pin 36 (MAF RTN) at the breakout box.

- Is the resistance less than 5.0 ohms?

YES -- MAF RTN harness circuit to PCM is OK. Go to D14. DC14 - Check MAF Circuit For Short to Ground In PCM

NO -- SERVICE open in MAF RTN harness circuit. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes