Fuel pump electrical, testing

Special tools, testers and auxiliary items required 

• Hand held remote control (jumper).
• Multimeter.
• Electrical connector test lead set.

Test conditions 

• Battery voltage 12.5 V.
• Fuse - 29  - in fuse holder at left of instrument panel is OK.
• Fuel filter OK.
• Ignition switched off.

Test sequence 

• Remove rear seat bench →
  • 72 - SEAT - FRAMES
  • 72 - SEAT - FRAMES for BODY INTERIOR - CABRIOLET
  .

• Remove cover retainers - arrows  - from the right sealing flange.

• Disconnect the electrical harness connector - arrow  - from the fuel delivery unit.
• Connect a Hand held remote control (jumper) to terminal - 1  - of the fuel delivery unit and to vehicle battery (+).

• Connect a jumper cable from a Electrical connector test lead set to terminal - 5  - of the fuel delivery unit and to vehicle Ground (GND).
• Press switch on the Hand held remote control (jumper).

• Listen for an operating noise from the fuel pump.

If no operating noise is heard:

• Remove the fuel delivery unit. Refer to → 20 - FUEL SUPPLY SYSTEM .

• Using a Multimeter , check the electrical circuit between terminals - 1  - and - 5  - of the fuel delivery unit for continuity.

Specified value: 0 ohms.

If a malfunction is detected in the electrical circuit:

• Check the wiring for a short circuit to Battery positive (+) or an open circuit.
• Check the electrical harness connector for damage, corrosion, lose or broken terminals.
• If necessary, repair the electrical circuit.
• If no malfunction is detected in electrical circuit, replace the fuel pump. Refer to → 20 - FUEL SUPPLY SYSTEM .

Final procedures 

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory.
2. If necessary, erase the DTC memory. Refer to Diagnostic Mode 04: Reset/delete diagnostic data .
3. If the DTC memory was erased, generate readiness code. Refer to Readiness Code .

• End of diagnosis.