Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel Pump 2 In-Line / Fuel Pump Relay 2, Checking: Notes
Models with an airbag are installed with a crash fuel shut-off system. It reduces the danger of a fire in a crash as the fuel pump is switched off via the fuel pump relay.
Special tools and workshop equipment required
- Multimeter.
- Electrical connector test lead set.
Test conditions
- Battery voltage at least 12.5 volts.
- Fuel filter OK.
- Ignition switched off.
Test procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
Make sure the engine is at room temperature.
-- Disconnect the Fuel Pump Relay 2 -J49- electrical harness connector. Refer to applicable wiring diagram for proper relay location.
-- Switch the ignition ON.
-- Using a Multimeter, Check the Fuel Pump Relay 2 -J49- electrical harness connector terminals 1 and 3 to Engine ground, for voltage.
Specified value: Battery Voltage
-- Switch the ignition Off.
Continue test according to the following table:
| Value | Cause | Test |
|---|---|---|
| If the specified value was not obtained: | Open or shorted circuit | Checking wiring |
| If the specified value was obtained: | Check reference signal circuit | Checking Activation |
| Value | Cause | Test |
|---|---|---|
| If the specified value was not obtained: | Open or shorted circuit | Checking wiring |
| If the specified value was obtained: | Check reference signal circuit | Checking Activation |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.