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8/19/19

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 99

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 99



- X63/4 (CAN databus adapter connector, 2-pin)



Test sequence



- Switch off ignition.



- Measurement with multimeter



- (X63/4) 2.Measure resistance with multimeter between pins 2 and 2.1 (X63/4)



Adapter cable no. W220 589 00 99 36 may be used.Specified value



- [55...65]ohms



Question:



- Is the measured value within the specified value range?



YES



The measurement value is OK.End of test



NO



The measurement value is not OK.Possible cause and remedy



- Line from component N3/10 (ME-SFI [ME] control unit) to component X63/4 (CAN databus adapter connector, 2-pin)



- Test terminating resistor of component X63/4 (CAN databus adapter connector, 2-pin).



- Test terminating resistor of CAN element in control module N3/10 (ME-SFI [ME] control unit).



End of test



1.3.2.2.1.2. Perform measurement at component N3/10 (ME-SFI [ME] control unit).



Test total resistance of the CAN engine.



Test sequence



- Switch off ignition.



- Connect socket box to component N3/10 (ME-SFI [ME] control unit).



- Measure resistance with multimeter between sockets (F.41) 11 and (F.54) 24 of the 35-pole socket box tester.

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NO



The measurement value is not OK.Figure legend 1:N71 (Headlamp range adjustment control module)Figure legend 2:N10/1 (Driver-side SAM



control unit with fuse and relay module)Possible cause and remedy



- Cable (N10/1) I10.3 - (N71) 19 is faulty .



- Cable (N71) 20 - W15/1 (Ground (right footwell)) is faulty .



- N10/1 (Driver-side SAM control unit with fuse and relay module)

8/18/19

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 1283

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 1283



YES



The measurement values are OK.End of test



NO



The measurement values are not OK.Possible cause and remedy



- B11/4 (Coolant temperature sensor)



End of test



2069



Component B14 (Ambient temperature display temperature sensor) has a short circuit to positive. (P0073)



Possible cause:



- B14 (Ambient temperature display temperature sensor)



Affected functions:



- Power generation



-------------------------------------------------



Test 1: Ambient temperature



Test 2: Check component B14 (Ambient temperature display temperature sensor).



1. Ambient temperature



Test 1.1: Check component B14 (Ambient temperature display temperature sensor).



Test 1.2: Check component B2/5b1 (Intake air temperature sensor).



1.1. Check component B14 (Ambient temperature display temperature sensor).



Test prerequisites



- The power supply of component N10/1 (Driver-side SAM control unit with fuse and relay module) is OK.



- Fault code 9063 is current, and (or) at least one of the relevant actual values is not OK.



Test sequence



- Detach coupling at component B14 (Ambient temperature display temperature sensor).



- Connect resistance simulator to the connector of component B14 (Ambient temperature display temperature sensor).



- Connect resistance substitution unit between sockets (B14)1 and (B14) 2



- Adjust resistance values one after another and compare them with the actual value.



Status of relevant actual value:



- B14 (Ambient temperature display temperature sensor):Warning! Communication with ECU required.



Specified value



- Resistor9.6 kohms:Temperature: [0锟斤拷 C]



- Resistor5.9 kohms:Temperature: [10锟斤拷 C]



- Resistor3.7 kohms:Temperature: [20锟斤拷 C]



- Resistor2.4 kohms:Temperature: [30锟斤拷 C]



- Resistor1.6 kohms:Temperature: [40锟斤拷 C]



Question:Is the actual value o.k.?

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3.1.3.4.1.8. Cruise control



Warning!Communication with ECU required.



4. Chassis CAN bus



Warning!Communication with ECU required.



E1325



This fault can be ignored and erased.



Possible cause:



- This fault can be ignored and erased.



Affected functions:



- Parking brake



-------------------------------------------------



Test 1: This fault can be ignored and erased.



1. This fault can be ignored and erased.



Note:This fault can be ignored and erased.



E1329



This fault can be ignored and erased.



Possible cause:



- This fault can be ignored and erased.



Affected functions:



- Parking brake



-------------------------------------------------



Test 1: This fault can be ignored and erased.



1. This fault can be ignored and erased.



Note:This fault can be ignored and erased.



E1333



One or more signals sent from control unit Traction systems via the CAN bus is implausible.



Possible cause:



- N47-5 (ESP control unit)



Affected functions:



- Electronic stability program ESP



-------------------------------------------------



Test 1: Check component N47-5 (ESP control unit).



1. Check component N47-5 (ESP control unit).



Possible cause and remedy



- Read out fault memory of control unit N47-5 (ESP control unit).

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 2983

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 2983



- 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



Test voltage supply of circuit 15.



Test sequence



- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [ F.15 ] 111 of the 35-pole socket box tester.



- Switch on ignition.



Specified value



- Voltage[11.0...15.0] V



Question



- Is the measurement value OK?



YES



The measurement value is OK.End of test



NO



The measurement value is not OK.Possible cause and remedy



- N10/1kP (Circuit 15 relay)

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How do I quickly reach my goal?First call up menu item 'Evaluation of CAN fault codes' in case of CAN timeout fault codes and communication



errors.The resulting tests must be performed.Menu item 'Further CAN test options' should only be called up if the above-specified tests do not



produce the desired result.Note:Menu item 'General test information' can be called up for an explanation of the different CAN fault types.



1.1.2. General test information



Notes on CAN fault codes:CAN timeout fault



- A CAN timeout fault code is set due to the absence of a CAN input signal.The cause of this may be not only the transmitter control unit, but



also the CAN networking.



- For example:No CAN message was received from control unit A.



Bus OFF fault



- A Bus OFF fault code is set, when the control unit cannot send a certain amount of messages to the CAN bus or the messages are



incomplete.The control unit then switches off for a short time from CAN bus.



- For example:CAN controller: CAN bus OFF



Functional CAN fault



- A functional CAN fault code is set because of an implausible CAN input signal.The cause of this is not the CAN networking, but the



transmitter control unit or its sensors.



- For example:CAN signal 'A' from control unit B is implausible.



Notes on CAN faults that cannot be read out as fault codes.Bus wake-up event



- An event that wakes up the bus without reason is designated a bus wake-up event.



- The cause of this is not the CAN networking, but the transmitter control unit or its sensors.



- Further possible causes of fault:



- Magnetic fields caused by nearby high-voltage installations, railroad installations or power plants.



- Magnetic fields can radiate on to lines and control units in rare cases and cause undefined behavior in the control units.



- The special tool 'Star Diagnosis CANtool' can be used to log bus wake-up events, bus keepawake events and other signals.



Bus keepawake event



- When a control unit keeps communication on the bus awake without reason, this is designated a bus keepawake event.



- The cause of this is not the CAN networking, but the transmitter control unit or its sensors.



- Further possible causes of fault:



- Magnetic fields caused by nearby high-voltage installations, railroad installations or power plants.



- Magnetic fields can radiate on to lines and control units in rare cases and cause undefined behavior in the control units.



- The special tool 'Star Diagnosis CANtool' can be used to log bus wake-up events, bus keepawake events and other signals.



1.1.2. No further information available.



1.1.3. General CAN fundamentals



Test 1.1.3.1: Low-Speed CAN (83,3 kBit/s)



Test 1.1.3.2: High-Speed CAN (125 kBit/s , 500 kBit/s)



1.1.3.1. Low-Speed CAN (83,3 kBit/s)



General CAN fundamentals



Low-Speed CAN (83,3 kBit/s)



- 83,3 kBit/s : For example:Interior CAN busSeries 211



- This CAN bus enables single-wire mode.



- 'Single-wire mode' means that fault-free communication between the control units is still possible even if one of the two CAN lines fails.



- This CAN bus does not require external terminating resistors.



Legend and description for figure 1CAN-H: CAN bus HighCAN-L: CAN bus LowECU 1 ... n: Control unit 1 ... nLegend and description for figure



2U 1: Specification approx. 3,6 voltsU 2: Specification approx. 0 voltsU 3: Specification approx. 2,5 voltsU 4: Specification approx. 1,4 voltsU 5:



Specification approx. 5 voltsContinue with button F2

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YES



The measurement value is OK.Note



- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose



contact and corrosion..



End of test



NO



The measurement value is not OK.Possible cause and remedy



- Ground cable



- W15/1 (Ground (right footwell))



End of test



1.1.3.2.1.8.2. Test voltage supply of circuit 87.



Test 1.1.3.2.1.8.2.1: Test voltage of terminal 87 at control unit N51 (AIRmatic with ADS control module).



Test 1.1.3.2.1.8.2.2: Test of cable for voltage supply



Test 1.1.3.2.1.8.2.3: Test procedure ground cable



1.1.3.2.1.8.2.1. Test voltage of terminal 87 at control unit N51 (AIRmatic with ADS control module).



Test prerequisite



- Battery voltage is OK.



Test sequence



- Switch off ignition.



- Connect socket box.



- Switch on ignition.



- Measure direct voltage with multimeter between sockets (2.21) 55 and (2.43) 77 of the 126-pole socket box tester.



Specified value



- [11...14 V]



Question



- Is the measurement value OK?



YES



The measurement value is OK.Note



- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose



contact and corrosion..



End of test



NO



The actual value is not o.k.Note



- This test did not produce any clear result.



- Select further tests.



1.1.3.2.1.8.2.2. Test of cable for voltage supply



Test prerequisite



- Battery voltage is OK.



Test sequence



- Switch off ignition.



- Connect socket box.



- Switch on ignition.



- Measure direct voltage with multimeter between ground and socket (2.43) 77 of the 126-pole socket box tester.