Fuel Pump Checking
Fuel Pump Checking
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 (SB6) OK.
• Fuel filter OK.
• Ignition switched off.
Test procedure
- Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] Preliminary Check.
Start diagnosis
- Remove the rear seat bench.
- Remove cover retainers - arrows - from the right sealing flange.
- Disconnect the electrical harness connector - 1 - 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 an Electrical connector test lead set to terminal - 5 - of the fuel delivery unit and to vehicle Ground.
- Press switch on the hand held remote control (jumper).
• The Fuel Pump runs quietly. Avoid surrounding noises while testing the fuel pump.
- Listen for an operating noise from the fuel pump.
If no operating noise is heard:
- Using a multimeter, check the electrical circuit between terminals 1 and 5 of the fuel delivery unit for resistance.
Specified value:.03 to 1.5 ohms.
If the specified value was Not obtained, replace the Fuel Delivery Unit.
- If the specified value was obtained, check the electrical harness for power and ground supply to the fuel pump. Note that the fuel pump is not supplied continuous power when the engine is not running. Refer to the Wiring Diagram.
Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 09.
2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.