Operation CHARM: Car repair manuals for everyone.

J15 - Check Inertia Fuel Shutoff (IFS) Switch




- Key "OFF".

- Locate and disconnect Inertia Fuel Shutoff (IFS) switch (verify that switch is reset).

- Measure resistance between the C and NC pins of the IFS switch.

- Is resistance less than 5.0 ohms?

Yes -- Reconnect IFS switch. Refer to Fuel Delivery and Air Induction/Testing and Inspection for open in power-to-pump circuit, poor fuel pump ground, open in fuel pump, etc.

No -- Replace or reset IFS switch. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)