P0122

[2] B37 (Accelerator pedal sensor): Hall sensor 1, Short circuit to ground / Open circuit in wiring [P0122]

Check component B37 (Accelerator pedal sensor).

Test 1 Check actual value B37 (Accelerator pedal sensor).
Test 2 Test voltage supply of component B37 (Accelerator pedal sensor).

1 Check actual value B37 (Accelerator pedal sensor).

Test sequence
- Switch on ignition.

Status of the relevant actual values:
- B37 (Accelerator pedal sensor) Voltage 1: Communication with ECU required
- B37 (Accelerator pedal sensor) Voltage 2: Communication with ECU required

Specified values
- B37 (Accelerator pedal sensor) Voltage 1 (Accelerator pedal position: Idle speed): [0.2...0.5] V
- B37 (Accelerator pedal sensor) Voltage 2 (Accelerator pedal position: Idle speed): [0.1...0.5] V
- B37 (Accelerator pedal sensor) Voltage 1 (Accelerator pedal position: Kickdown): [4.3...4.8] V
- B37 (Accelerator pedal sensor) Voltage 2 (Accelerator pedal position: Kickdown): [2.1...2.8] V

Question: Are the actual values o.k.?

2 Test voltage supply of component B37 (Accelerator pedal sensor).

Test prerequisite
- The actual value is not o.k.

Test sequence
- Switch off ignition.
- Connect socket box.
- [F.4] 100<-->117 [F.21]
- Switch on ignition.

Specified value
- Voltage [4.75...5.25] V

Question: Is the measured value okay?

No
- The measured value is not o.k.
Possible cause and remedy
- Cable for voltage supply
**End of test**

Yes
- The measured value is o.k.
Further possible causes of fault
- Signal wire
- B37 (Accelerator pedal sensor)
**End of test**