Checking Activation
When the door is opened or the Ignition is Switched to the On position; The fuel pump is activated for 2 seconds to build up the pressure in the fuel system.
-- Switch the ignition ON.
-- Using a Multimeter, Check the Fuel Pump Relay -J17- electrical harness connector terminals 2 and 3 for voltage.
Specified value: Battery Voltage for 2 s
-- Switch the ignition Off.
If the specified value was obtained:
-- Replace the Fuel Pump Relay -J17- and retest for operation.
If the specified value was Not obtained:
-- Using a Multimeter, Check the Fuel Pump Relay -J17- electrical harness connector to the Motronic Engine Control Module - J623 - electrical harness connector T94 for an open circuit.
| Fuel Pump Relay -J17- electrical harness connector terminals | Engine Control Module - J623- electrical harness connector T94 terminals. |
|---|---|
| 2 | 71 |
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.
-- Go to Final Procedures
If the specified value was obtained:
-- Replace the Engine Control Module -J623-. Refer to appropriate service information.