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

J22 - Check Power to Pump Circuit Continuity




- Key "OFF".

- Fuel pump relay disconnected.

- Measure resistance between power-to-pump circuit at the fuel pump relay vehicle harness connector and the battery negative post.

- Is resistance less than 10.0 ohms?

Yes -- Replace fuel pump relay. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Service open in power-to-pump circuit between Fuel Pump Monitor (FPM) splice and fuel pump relay. Refer to schematic.

Reconnect fuel pump relay. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)