Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts
0204
The safety fuel shutoff is active. (P2176)
Possible cause:
- M16/6 (Throttle valve actuator)
Affected functions:
- Engine diagnosis
- Engine running
-------------------------------------------------
Test 1: Check component M16/6 (Throttle valve actuator).
1. Check component M16/6 (Throttle valve actuator).
Test 1.1: Check component B37 (Accelerator pedal sensor).
Test 1.2: Check component M16/6 (Throttle valve actuator).
Test 1.3: Perform mechanical inspection of component M16/6 (Throttle valve actuator).
1.1. Check component B37 (Accelerator pedal sensor).
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 250
Test 1.1.1: Check component B37 (Accelerator pedal sensor) using actual value.
Test 1.1.2: Check power supply of component B37 (Accelerator pedal sensor).
1.1.1. 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)
1.1.2. 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!
- 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
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 251
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
1.2. Check component M16/6 (Throttle valve actuator).
Test 1.2.1: Check component M16/6 (Throttle valve actuator) using actual value.
Test 1.2.2: Check component M16/6m1 (Actuator motor) by means of actuation.
1.2.1. Check component M16/6 (Throttle valve actuator) using actual value.
Warning!Communication with ECU required.
1.2.2. Check component M16/6m1 (Actuator motor) by means of actuation.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 252
Test prerequisite
- Operate engine at idling speed.
Note
- If the throttle valve angle is< 1,1°, unmetered air may be present.
Status of relevant actual value:
- Throttle valve angle:Warning! Communication with ECU required.
Move on to actuation with button F2
1.3. Perform mechanical inspection of component M16/6 (Throttle valve actuator).
Test sequence
- Switch off ignition.
- Expose component M16/6 (Throttle valve actuator).
- Slowly operate throttle flap by hand up to full load.
Specified value
- The throttle valve must not stick and must close by internal spring force.
Question
- Is the test o.k?
YES
The test is o.k..End of test
NO
The test is not o.k..Possible cause and remedy
- Check intake tract for residue and clean if necessary.If no residue is present, replace component M16/6 (Throttle valve actuator).
0204
The safety fuel shutoff is active. (P2176)
Possible cause:
- M16/6 (Throttle valve actuator)
Affected functions:
- Engine diagnosis
- Engine running
-------------------------------------------------
Test 1: Check component M16/6 (Throttle valve actuator).
1. Check component M16/6 (Throttle valve actuator).
Test 1.1: Check component B37 (Accelerator pedal sensor).
Test 1.2: Check component M16/6 (Throttle valve actuator).
Test 1.3: Perform mechanical inspection of component M16/6 (Throttle valve actuator).
1.1. Check component B37 (Accelerator pedal sensor).
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 250
Test 1.1.1: Check component B37 (Accelerator pedal sensor) using actual value.
Test 1.1.2: Check power supply of component B37 (Accelerator pedal sensor).
1.1.1. 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)
1.1.2. 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!
- 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
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 251
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
1.2. Check component M16/6 (Throttle valve actuator).
Test 1.2.1: Check component M16/6 (Throttle valve actuator) using actual value.
Test 1.2.2: Check component M16/6m1 (Actuator motor) by means of actuation.
1.2.1. Check component M16/6 (Throttle valve actuator) using actual value.
Warning!Communication with ECU required.
1.2.2. Check component M16/6m1 (Actuator motor) by means of actuation.
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 252
Test prerequisite
- Operate engine at idling speed.
Note
- If the throttle valve angle is< 1,1°, unmetered air may be present.
Status of relevant actual value:
- Throttle valve angle:Warning! Communication with ECU required.
Move on to actuation with button F2
1.3. Perform mechanical inspection of component M16/6 (Throttle valve actuator).
Test sequence
- Switch off ignition.
- Expose component M16/6 (Throttle valve actuator).
- Slowly operate throttle flap by hand up to full load.
Specified value
- The throttle valve must not stick and must close by internal spring force.
Question
- Is the test o.k?
YES
The test is o.k..End of test
NO
The test is not o.k..Possible cause and remedy
- Check intake tract for residue and clean if necessary.If no residue is present, replace component M16/6 (Throttle valve actuator).
