J2 - Check Fuel Pump Relay

Fuel Pump Relay:

- Key "OFF".

- Fuel pump relay disconnected.

- Digital Volt/Ohm Meter (DVOM) on 200 ohm scale.

- Check fuel pump relay coil resistance:

- For ISO type relays, measure resistance between Pins 85 and 86 at the fuel pump relay (pin numbers molded on relay).

- For other types of relays, measure resistance between VPWR pin and fuel pump circuit pin at the fuel pump relay.

- Resistance should be between 40 and 85 ohms.

- DVOM on 10,000 ohm scale.

- Check fuel pump relay for internal shorts.

- For ISO type relays, measure resistance between Pin 85 and both Pins 30 and 87 at the fuel pump relay.

- For other types of relays, measure resistance between the fuel pump circuit pin and both the power-to-pump and B(+) pins at the fuel pump relay.

- Both resistances should be greater than 10,000 ohms.

- Are all resistance checks OK?

Yes -- Go to J3. J3 - Check Fuel Pump Circuit For Short to Power

No -- Replace fuel pump relay. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)