Fault of priority 1: fault of function monitor in electronic accelerator (P0221)

Fault of priority 1: fault of function monitor in electronic accelerator (P0221)

Test 1: Check component B37 (Accelerator pedal sensor).

1. Check component B37 (Accelerator pedal sensor).

Test 1.1: Check component B37 (Accelerator pedal sensor) using actual value.

Test 1.2: Check power supply of component B37 (Accelerator pedal sensor).

1.1. Check component B37 (Accelerator pedal sensor) using actual value.
The test prerequisites are not fulfilled.NO IDLINGNote

- Engine should be at idle speed.
Continue with button F2

Warning!Communication with ECU required.


1.2. Check power supply of component B37 (Accelerator pedal sensor).
Test prerequisite

- The actual value is not o.k.
- The power supply of component N3/10 (ME-SFI [ME] control unit) is OK.
Test sequence

- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).
- Measure direct voltage with multimeter between sockets (4.16) 101 and (4.04) 89 of the 126-pole socket box tester.
- Measure direct voltage with multimeter between sockets (4.17) 102 and (4.04) 89 of the 126-pole socket box tester.
- Switch on ignition.
Specified value

- Voltage[4.75...5.25] V
Question

- Are the measurement values OK?


YES
The measurement values are OK.Further possible causes of fault

- Signal lines
- B37 (Accelerator pedal sensor)
End of test

NO
The measurement values are not OK.Possible cause and remedy

- Cable for voltage supply
- N3/10 (ME-SFI [ME] control unit)
End of test