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

DH10 - Check TP Circuit Continuity



- Key Off.

- TP sensor disconnected.

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

- Install breakout, leave PCM disconnected.

- Measure the resistance between TP circuit at the TP sensor vehicle harness connector and Test Pin 89 (TP SIG) at the breakout box.

- Is the resistance less than 5.0 ohms?

YES -- TP SIG harness circuit to PCM is OK. Go to DH11. DH11 - Check TP Circuit For Shorts to SIG RTN or PWR GND

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