Mercedes Benz

1.1.3.2.1.4. Check power supply at control unit N15/3 (ETC [EGS] control unit). Test 1.1.3.2.1.4.1: Guided test 1.1.3.2.1.4.1. Guided test Operation number of operation texts and work units or standard texts and flat rates:27-0641Possible cause - Battery has incorrect charge state or is faulty. - Local undervoltage of component N15/3 (ETC [EGS] control unit) Test sequence - Erase fault memory. Continue with button "F2" Warning!Communication with ECU required. 1.1.3.2.1.5. Check power supply at control unit N15/5 (Electronic selector lever module control unit). Operation number of operation texts and work units or standard texts and flat rates:27-0641Test sequence - Switch off ignition. - Disconnect connector at component N15/5 (Electronic selector lever module control unit). - Switch on ignition. - [A.2] Measure direct voltage with multimeter between 2 and 1 [A.1] Status of relevant actual value: - Supply voltage (tml. 15):Warning! Communication with ECU required. Specified ...

The measurement value is OK.Cause - Control module has an internal error. REMEDY - Disassemble and assemble automatic transmission using the repair instructions. - Exchange electrohydraulic control unit. IMPORTANT NOTEFollowing the repair measures, the following checks MUST be carried out using the Diagnosis Assistance System, menu 'Control unit adaptations' - Flash programming of control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit) - SCN coding End of test NO The measurement value is not OK.Possible cause and remedy - Diagnostic cable has short to ground. - Inspect wiring and connectors at connection points for loose contacts, damage and corrosion. Repair or replace as required. End of test NO The measurement value is not OK.Possible cause and remedy - Diagnostic cable has open circuit. - Inspect wiring and connectors at connection points for loose contacts, damage and corrosion. Repair or replace as required. End of test NO The measurement value is n...

YES The measurement value is OK.End of test NO The measurement value is not OK.Possible cause and remedy - Line from component N10/1 (Front SAM control unit with fuse and relay module) to component N15/6 (Sprintshift control module) End of test NO The measurement value is not OK.Possible cause and remedy - Check fuse "f63" (voltage supply from control unit ASG) in component N10/1 (Front SAM control unit with fuse and relay module). - Test cables End of test 1.1.3.2.1.7. Check power supply at control unit N47-5 (ESP, SPS [PML] and BAS control unit). Test 1.1.3.2.1.7.1: Test voltage of terminal 87 at control unit N47-5 (ESP, SPS [PML] and BAS control unit). Test 1.1.3.2.1.7.2: Test of cable for voltage supply Test 1.1.3.2.1.7.3: Test procedure ground cable 1.1.3.2.1.7.1. Test voltage of terminal 87 at control unit N47-5 (ESP, SPS [PML] and BAS control unit). Test prerequisite - Battery voltage is OK. Test sequence - Switch off ignition. - Connect socket box. - Switch on igni...

- Lines - N10/1 (Driver-side SAM control unit with fuse and relay module) End of test 1.4. Test current consumption of component N10/1kR (Circuit 87 relay, engine). Connect socket box to component N3/10 (ME-SFI [ME] control unit). 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 Test current consumption of component N10/1kR (Circuit 87 relay, engine). Test sequence - Measure direct current with multimeter between sockets [F.4] 100 and [F.27] 123 of the 126-pole socket box tester.

- X30/5 (Left voltage distributor (CAN) connector) - Test connectors and wiring for CAN of engine compartment CAN control modules. - Control unit Communication with ECU required ( Measuring system ) 1.1.3.4. Display CAN signals with the aid of the special tool 'Star Diagnosis CANtool'. Important notes - When CAN diagnosis is finished, the 8-pin CAN cable must be replaced with the diagnostic cable. - Before values are read out from a control unit, the control unit must be reinitialized. Continue with button F2 Test 1.1.3.4.1: Actual values via CAN ( Engine CAN bus ) 1.1.3.4.1. Actual values via CAN ( Engine CAN bus ) Note - The actual values shown on the following screens are only displayed and updated as long as the CAN bus is active. Continue with button F2 Test 1.1.3.4.1.1: Function-specific actual values : Test 1.1.3.4.1.2: Cruise control Test 1.1.3.4.1.3: Drive authorization Test 1.1.3.4.1.4: Control unit-specific actual values : Test 1.1.3.4.1.5: Electronic selector ...

- 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 current consumption of component N10/1kR (Circuit 87 relay, engine). Test sequence - Measure direct current with multimeter between sockets [F.4] 100 and [F.27] 123 of the 126-pole socket box tester. - Switch on ignition. Specified value - Amperage[0.1...0.3] A Question - Is the measurement value OK? YES The test was okay.End of test NO The measurement value is not OK.Possible cause and remedy - Lines to component N10/1kR (Circuit 87 relay, engine) - N10/1kR (Circuit 87 relay, engine) End of test 1.1.3.2.1.3.4. Test voltage supply of circuit 15. Connect s...

- Test terminating resistor of component X30/5 (Left voltage distributor (CAN) connector). - Test terminating resistor of CAN element in control module N3/10 (ME-SFI [ME] control unit). End of test 1.1.3.2.2.2. Test terminating resistor of component X30/5 (Left voltage distributor (CAN) connector). Test terminating resistor of component X30/5 (Left voltage distributor (CAN) connector). Test sequence - Switch off ignition. - Connect socket box to component N3/10 (ME-SFI [ME] control unit). - Disconnect coupling F at 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. Specified value - Resistor[115...125]ohms 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 - Line from component X30/5 (Left voltage distributor (CAN) connector) to component N3/10 (ME-SFI [ME] control unit) - Component X30/5 (L...

1.1.3.4.1.8. Steering column module Warning!Communication with ECU required. 2. Check component N80 (Steering column module). Read and process fault code from control module N80 (Steering column module). Possible cause and remedy - Read and process fault code from control module N80 (Steering column module). End of test Part 1 No CAN message was received from control unit N80 (Steering column module). Possible cause: - Check the CAN communication with control unit N80 (Steering column module). - Chassis CAN bus Affected functions: - CAN Communication ------------------------------------------------- Test 1: Engine compartment CAN test Test 2: Chassis CAN bus Test 3: CAN communication is faulty. 1. Engine compartment CAN test Test 1.1: Engine compartment CAN test 1.1. Engine compartment CAN test Test 1.1.1: Procedure in case of CAN faults Test 1.1.2: Read current CAN configuration and CAN fault codes Test 1.1.3: Further CAN test options 1.1.1. Procedure in case of CAN faults Tes...

- 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 current consumption of component N10/1kR (Circuit 87 relay, engine). Test sequence - Measure direct current with multimeter between sockets [F.4] 100 and [F.27] 123 of the 126-pole socket box tester. - Switch on ignition. Specified value - Amperage[0.1...0.3] A Question - Is the measurement value OK? YES The test was okay.End of test NO The measurement value is not OK.Possible cause and remedy - Lines to component N10/1kR (Circuit 87 relay, engine) - N10/1kR (Circuit 87 relay, engine) End of test 1.1.3.2.1.3.4. Test voltage supply of circuit 15. Connect s...

- Voltage[8,5...16,4] V Question - Is the measurement value OK? YES The measurement value is OK.Possible cause of fault - The conductors in the electrohydraulic control unit are interrupted. - Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective. Possible remedy - Replace component Y3/8 (Electric control unit (VGS)). Following the repair measures, the following checks MUST be carried out using the Diagnosis Assistance System, menu 'Initial startup' - Initial startup with manual settings input for new control unit

NO The measurement value is not OK.Possible cause and remedy - F34f42 (Fuse 42) - Lines End of test 1.3. Test current consumption of component N10/1kR (Circuit 87 relay, engine). Connect socket box to component N3/10 (ME-SFI [ME] control unit). 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 Test current consumption of component N10/1kR (Circuit 87 relay, engine).

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 wi...

Test voltage supply of circuit 30. Test sequence - Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [ F.16 ] 112 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 - F34f42 (Fuse 42) - Lines End of test 1.1.3.2.1.3.3. Test current consumption of component N10/1kR (Circuit 87 relay, engine). Connect socket box to component N3/10 (ME-SFI [ME] control unit).

YES Test sequence - Switch off ignition. - Separate plug connection at transmission. - Measure voltage in transmission wiring harness using a multimeter. - Measure resistance with multimeter between ground and 3 Specified value - Resistance measured: [OL] ohms Question - Is the measurement value OK?

The signal from component Y3/8n3 (Output speed sensor (VGS)) is not available. Possible cause: - Y3/8n3 (Output speed sensor (VGS)) Affected functions: - Automatic transmission Function ------------------------------------------------- Test 1: Remedial action for non-available signal from component Y3/8n3 (Output speed sensor (VGS)) 1. Remedial action for non-available signal from component Y3/8n3 (Output speed sensor (VGS)) Warning!Communication with ECU required. 0723 Component Y3/8n3 (Output speed sensor (VGS)) is defective. Possible cause: - Y3/8n3 (Output speed sensor (VGS)) Affected functions: - Automatic transmission Function ------------------------------------------------- Test 1: Remedial action if component 'Y3/8n3 (Output speed sensor (VGS))' is faulty 1. Remedial action if component 'Y3/8n3 (Output speed sensor (VGS))' is faulty Warning!Communication with ECU required. 0729 The gear is implausible or the transmission is slipping. ( 6. gear ) Possible caus...

- The fault memory is erased by pressing button "F2". Continue with button "F2" Warning!Communication with ECU required. ME9.7 Continuous camshaft adjustment ( RIGHT ): Incorrect position of the exhaust camshaft (P0014) Possible cause: - Stepless adjustment of exhaust camshaft of right cylinder bank Affected functions: - Engine output ------------------------------------------------- Test 1: Exhaust camshaft of right cylinder bank 1. Exhaust camshaft of right cylinder bank Warning!Communication with ECU required. 722.9 (7-gear) ETC2 as of 2008 The gear is implausible or the transmission is slipping. ( 2. gear ) Possible cause: - Mechanical or hydraulic defect in the transmission ( 2. gear ) Affected functions: - Automatic transmission Function ------------------------------------------------- Test 1: Possible causes and remedial action when fault code 0732 is displayed 1. Possible causes and remedial action when fault code 0732 is displayed Check oil level in auto...

The measurement value is OK.Cause - Control module has an internal error. REMEDY - Disassemble and assemble automatic transmission using the repair instructions. - Exchange electrohydraulic control unit. IMPORTANT NOTEFollowing the repair measures, the following checks MUST be carried out using the Diagnosis Assistance System, menu 'Control unit adaptations' - Flash programming of control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit) - SCN coding End of test NO The measurement value is not OK.Possible cause and remedy - Diagnostic cable has short to ground. - Inspect wiring and connectors at connection points for loose contacts, damage and corrosion. Repair or replace as required. End of test NO The measurement value is not OK.Possible cause and remedy - Diagnostic cable has open circuit. - Inspect wiring and connectors at connection points for loose contacts, damage and corrosion. Repair or replace as required. End of test NO The measurement value is n...

Possible cause: - Stepless adjustment of exhaust camshaft of left cylinder bank Affected functions: - Engine output ------------------------------------------------- Test 1: Exhaust camshaft of left cylinder bank 1. Exhaust camshaft of left cylinder bank Warning!Communication with ECU required. 0740 Continuous camshaft adjustment ( RIGHT ): Incorrect position of the intake camshaft (P0010) Possible cause: - Stepless adjustment of intake camshaft of right cylinder bank Affected functions: - Engine output ------------------------------------------------- Test 1: Intake camshaft of right cylinder bank 1. Intake camshaft of right cylinder bank Warning!Communication with ECU required. 0744 Continuous camshaft adjustment ( LEFT ): Incorrect position of the intake camshaft (P0020) Possible cause: - Stepless adjustment of intake camshaft of left cylinder bank Affected functions: - Engine output ------------------------------------------------- Test 1: Intake camshaft of left cylinder bank 1...

- Test terminating resistor of CAN element in control module N3/10 (ME-SFI [ME] control unit). End of test 1.3.2.2.2. Test terminating resistor of component X63/4 (CAN databus adapter connector, 2-pin). Test terminating resistor of component X63/4 (CAN databus adapter connector, 2-pin). Test sequence - Switch off ignition. - Connect socket box to component N3/10 (ME-SFI [ME] control unit). - Disconnect coupling F at 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. Specified value - Resistor[115...125]ohms 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 - Line from component X63/4 (CAN databus adapter connector, 2-pin) to component N3/10 (ME-SFI [ME] control unit) - Component X63/4 (CAN databus adapter connector, 2-pin) End of test 1.3.2.2.3. Test terminating resistor of CAN element in c...

- Engine diagnosis ------------------------------------------------- Test 1: Combustion misfirings 1. Combustion misfirings Warning!Communication with ECU required. 722.9 (7-gear) ETC2 as of 2008 Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective. Possible cause: - Y3/8n4 (Fully integrated transmission control (VGS) control unit) Affected functions: - Automatic transmission Function ------------------------------------------------- Test 1: Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty 1. Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty Test prerequisites - First of all process all other current fault codes. POSSIBLE CAUSES - Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective. Preconditions - Print out the initial quick test log before processing the fault code 0641. - Create c...