Operation CHARM: Car repair manuals for everyone.

Test Step 4.2



Test 4.2:

Vehicle speed above 100 km/h or during long trip: ABS lamp OFF, ASC display "defect", PALA OFF:

- Engine speed signal (see test 3.2)
- DME ignition fade-out (see BMW DIAGNOSTIC SYSTEM. *D* Defect Code Memory DME)

Ignition ON
Pin 43 and Pin 18
6 - 12 % battery voltage
Pin 48 and Pin 18
Battery voltage

Throttle valve in LL
Pin 46 and Pin 18
Battery voltage

Throttle valve in VL
Pin 46 and Pin 18
88.94% battery voltage

- Pedal position sensor test, (see BMW DIAGNOSTIC SYSTEM. *D* Defect Code Memory EML).
- Pedal position sensor setting.
- During test drive, check for other DME or EML-specific defects.
- Does "ASC detect" appear in display during ASC control (extreme acceleration)?
Check wire Pin 45 to Pin 38 DME control unit X1500 for continuity or a short.
- Check the external safety path.

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*D*: Diagnostic Mode; Connect the BMW DIAGNOSTIC SYSTEM to the vehicle. Select control unit and set up diagnostic mode with the control unit.