FUEL DELIVERY RATE, CHECKING, VEHICLES WITH Fuel Pump Control Module -J538-: Notes
WARNING: This page is about a different variant/trim than selected.
Special tools and workshop equipment required
- Trim Removal Wedge: 3409
- Injection Rate Comparison Meter Kit - Remote Cable: VAG1348/3A
- Multimeter, for example Analog/Digital Multimeter: FLU83III
- Vehicle Diagnostic Tester - Test Adapter - 5 Pin: VAS5565
- Pressure Tester Kit: VAS6550
- Pressure Regulator Valve: VAS6550/4
- Vehicle Diagnostic Tester
- Measuring container, three liter
NOTE:
If driving is still impaired with the fuel tank a maximum of 1 /4 full, then perform a fuel delivery test with the fuel tank only 1 /4 full or with very little fuel in the fuel tank.
Test Conditions:
- Voltage supply OK. Refer to FUEL PUMPS, CHECKING FUNCTION AND POWER SUPPLY, VEHICLES WITHOUT Fuel Pump Control Module -J538- .
- Fuel pressure is OK. Refer to FUEL PRESSURE, CHECKING .
- The battery voltage must be at least 11.5 V. Charge if necessary. Refer to BATTERY, CHARGING .
- Fuel Pump Control Module -J538- fuse OK. Refer to the appropriate Wiring Diagram.
- Fuel Pump Control Module -J538- is OK. Refer to Vehicle Diagnostic Tester.
- Fuel Pump Relay -J17- OK. Refer to Vehicle Diagnostic Tester.
- Fuel pump fuse OK. Refer to the appropriate Wiring Diagram.
- Pull on the connector without pressing the release to make sure the connection is secure. Repeat the fuel pump function test if the connector was not connected correctly.
- Fuel level inside the fuel tank is above the reserve
Test Sequence:
NOTE:
Pay attention to all safety precautions. Refer to SAFETY PRECAUTIONS .
Follow the guidelines for clean working conditions. Refer to PARKING/AUXILIARY HEATER AND FUEL SYSTEM CLEAN WORKING CONDITIONS .