Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

DC10 - Check Continuity of MAF SIG Circuit



- Key Off.

- MAF sensor disconnected.

- Breakout box installed, PCM disconnected.

- Measure resistance between MAF circuit at the MAF sensor vehicle harness connector and Test Pin 88 (MAF SIG) at the breakout box.

- Is resistance less than 5.0 ohms?

YES -- MAF SIG harness circuit to PCM is OK. Go to DC11. DC11 - Check PWR GND Circuit to MAF Sensor

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