Checking Wiring
-- Using a Multimeter, Check the Fuel Pump Relay 2 -J49- electrical harness connector terminals 1 and 3 to the Fuse for resistance, Refer to applicable wiring diagram for fuse location and number.
| Fuel Pump Relay 2 -J49- electrical harness connector terminals | Measure to: |
|---|---|
| 1 | Fuse, Refer to applicable wiring diagram for fuse location and number. |
| 3 | Fuse, Refer to applicable wiring diagram for fuse location and number. |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection and replace any open fuses.
-- Go to FINAL PROCEDURES
If the specified value was obtained:
-- Install a jumper wire from Fuel Pump Relay 2 -J49- terminals 3 to 5.
-- Switch the ignition ON.
Specified value: Fuel Pump 2 -V277- should be operating (Aux. Fuel Pump should be heard running).
-- 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 |
-- Remove the engine control module Engine Control Module -J623-. Refer to the service information for removal and installation procedures.
-- Disconnect the electrical harness connector from the Fuel Pump 2 -V277- in-line fuel delivery unit. Refer to the service information for removal and installation.
-- Using a multimeter, measure the resistance of the circuit between the Fuel Pump 2 -V277 -, Fuel Pump Relay 2 -J49- and the engine control module Engine Control Module -J623 -. Refer to the applicable wiring diagram.
| Fuel Pump 2 -V277- electrical harness connector terminal | Measure to: |
|---|---|
| 1 | Ground |
| 2 | Fuel Pump Relay 2 -J49- electrical connector terminal 5 |
Specified value: 1.5 Ω Max.
If the specification was not obtained:
-- Check the wires for a short circuit to each other, a short to battery voltage, and a short to ground.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- Repair as necessary.
-- Go to FINAL PROCEDURES
If the specified value was obtained:
-- Replace the Fuel Pump 2 -V277- delivery unit.
-- Go to FINAL PROCEDURES