13 31 029 Checking fuel pump delivery pressure (N62TU2)
Special tools required:
- 13 5 220 . See FUEL SYSTEM - SPECIAL TOOLS .
- 61 3 050 . See GENERAL ELECTRICAL SYSTEM - SPECIAL TOOLS .
Necessary preliminary tasks:
- Read out fault memory of DME control unit.
- Switch off ignition.
- Remove acoustic cover by removing 4 cover screws. Raise cover and remove toward front. Remove air filter housing on right.
- Remove right ignition coil cover.
Catch and dispose of escaping fuel.
Remove dust cap on measuring valve of fuel rail.
Unscrew non-return valve (1) on special tool kit 13 5 220 .
Mount special tool kit 13 5 220 on fuel rail and tighten knurled nut until hand-tight.
Start engine.
Screw in non-return valve (1) until a pressure reading is indicated on the DIS Tester.
Measuring fuel pressure:
- Connect pressure sensor to DIS Tester
- Start engine
- Select Measurement.
- Multimeter function appears
- Select Pressure test
- Read off fuel pressure
Test pressure, refer to TECHNICAL DATA. See FUEL SYSTEM - TECHNICAL DATA .
Switch off engine.
Checking fuel pump:
Remove fuel pump relay . See BUZZERS, RELAYS & TIMERS .
Connect special tool 61 3 050 to terminal (87) and terminal (30).
Operate button and read off fuel pump delivery pressure at DIS Tester.
Delivery pressure, refer to TECHNICAL DATA. See FUEL SYSTEM - TECHNICAL DATA .
Notes on fuel pressure check .
Installation:
Now clear the fault memory.