2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)
A L L Diagnostic Trouble Codes ( DTC ): P Code Charts The values from the position sensors of the accelerator pedal are implausible in relation to each other. (P2138)
The values from the position sensors of the accelerator pedal are implausible in relation to each other. (P2138)
Possible cause:
- B37 (Accelerator pedal sensor) Affected functions:
- Engine diagnosis
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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. Test sequence
- Switch on ignition. Status of the relevant actual values: - B37 (Pedal value sensor) Voltage 1:Warning! Communication with ECU required. - B37 (Pedal value sensor) Voltage 2:Warning! Communication with ECU required. Specified values
- Accelerator pedal position:Idle speed - B37 (Accelerator pedal sensor)Signal1 : [0.2...0.5] V - B37 (Accelerator pedal sensor)Signal2 : [0.1...0.5] V
- Accelerator pedal position:Kickdown - B37 (Accelerator pedal sensor)Signal1 : [4.3...4.8] V - B37 (Accelerator pedal sensor)Signal2 : [2.1...2.5] V Question
- Are the actual values o.k.?
YES The actual values are okay.End of test
NO The actual values are not okay.Possible cause and remedy
- Check power supply of component B37 (Accelerator pedal sensor). - Check lines from component N3/10 (ME-SFI [ME] control unit) to component B37 (Accelerator pedal sensor). - B37 (Accelerator pedal sensor)
1.2. Check power supply of component B37 (Accelerator pedal sensor). Figure legend
- A -ConnectionTest cable 35-pin socket box - 001 -Sockets of component N3/10 (ME-SFI [ME] control unit) - 05 -35-pin socket box - 050 -126-pin socket box - 108 -Test cable 266 589 01 63 00 - N3/10 (ME-SFI [ME] control unit) - II 1-63ConnectionTest cable - III 64-126ConnectionTest cable Warning!
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) Copyright ? 2013, ALLDATA 10.52SS Page 2
- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050). Continue to test with button F2
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 [F.11] 107 and [F.23] 119 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 End of test
