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2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948) A L L Diagnostic Trouble Codes ( DTC ): P Code Charts P0597

2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)
A L L  Diagnostic Trouble Codes ( DTC ): P Code Charts P0597
Component Y110 (Three-disk thermostat valve) has an open circuit in the wiring. (P0597)

Possible cause:
- 110 (Three-disk thermostat valve) - N10/1kI (Circuit 87 relay engine) - N10/1f57 (Fuse 57) - Voltage supply via component 7/36 (Circuit 87 M2e connector sleeve) Affected functions:
- eating - Engine cooling

------------------------------------------------
  Test 1: Check power supply of component N3/10 (ME-SFI [ME] control unit).
  Test 2: Arrangement of fuses
  Test 3: Power supply
  Test 4: Check component 110 (Three-disk thermostat valve).
1. Check power supply of component N310 (ME-SI ME control unit).
  Test 1.1: Test voltage supply of circuit 87. ( Check using actual value )
  Test 1.2: Test voltage supply of circuit 30.
  Test 1.3: Test voltage supply of circuit 87.
  Test 1.4: Test current consumption of component N10/1k (Circuit 87 relay engine).
  Test 1.5: Test voltage supply of circuit 15.
1.1. Test voltage supply of circuit 87. ( Check using actual value ) Test prerequisite
- The voltage test at component 1 (Battery) is o.k. - Ignition ON Status of relevant actual value: - Battery voltage:Warning! Communication with ECU required. Specified value
- Battery voltage[11.0 ... 15.0] V Question:Is the actual value o.k.?
YES The actual value is okay.End of test
NO The actual value is not o.k.Possible cause and remedy
- Test voltage supply of circuit 30. - Test voltage supply of circuit 87.

1.2. Test voltage supply of circuit 30. Connect socket bo to component N310 (ME-SI 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
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 2
- 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 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) - ines End of test
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 3

1.3. Test voltage supply of circuit 87. Connect socket bo to component N310 (ME-SI 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 voltage supply of circuit 87.
Test sequence
- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [F.3] 99 of the 126-pole socket box tester. - Measure direct voltage with multimeter between sockets [ F.4 ] 100 and [ F.5 ] 101 of the 126-pole socket box tester. - Measure direct voltage with multimeter between sockets [ F.6 ] 102 and [ F.5 ] 101 of the 126-pole socket box tester. - Switch on ignition. Specified value
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 4
- Voltage[11.0...15.0] V Question
- Are the measurement values OK?

YES The measurement values are OK.Further possible causes of fault
- Test voltage supply of circuit 30.

NO The measurement values are not OK.Possible cause and remedy
- N10/1f43 (Fuse 43) - N10/1f44 (Fuse 44) - N10/1kI (Circuit 87 relay engine) - ines - N10/1 (river-side SAM control unit with fuse and relay module) End of test

1.4. Test current consumption of component N101k (Circuit 87 relay, engine). Connect socket bo to component N310 (ME-SI 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
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 5

Test current consumption of component N101k (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
- ines to component N10/1k (Circuit 87 relay engine) - N10/1k (Circuit 87 relay engine) End of test
1.5. Test voltage supply of circuit 15. Connect socket bo to component N310 (ME-SI 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
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 6

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
- N10/1f52 (Fuse 52) - ines End of test

2. Arrangement of fuses Figure legend/figure
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 7
- N10/1 (river-side SAM control unit with fuse and relay module) Fuses
- FuseF43-F67 elays
- I  N10/1kI (Circuit 87 relay engine) - K  N10/1kK (Circuit 87 relay chassis) -   N10/1k (Starter relay) - M  N10/1kM (SEQ [AS] pump control relay) - N  N10/1kN (Circuit 15 relay) - O  N10/1kO (FAN relay module) - P  N10/1kP (Circuit 15 relay) -   N10/1k (Air pump or oil cooler fan relay)

3. Power supply Voltage supply via component 736 (Circuit 87 M2e connector sleeve)
Possible cause and remedy
- Check voltage supply according to wiring diagram.

4. Check component Y110 (Three-disk thermostat valve).
  Test 4.1: Component 110 (Three-disk thermostat valve) is mechanically damaged or it sticks.
  Test 4.2: Test current consumption of component 110 (Three-disk thermostat valve).
4.1. Component Y110 (Three-disk thermostat valve) is mechanically damaged or it sticks.
  Test 4.1.1: 110 (Three-disk thermostat valve) : Coolant temperature is not reached.
  Test 4.1.2: 110 (Three-disk thermostat valve) : Coolant temperature is too high.
4.1.1. Y110 (Three-disk thermostat valve) : Coolant temperature is not reached. Warning!Communication with EC reuired.

4.1.2. Y110 (Three-disk thermostat valve) : Coolant temperature is too high. Warning!Communication with EC reuired.

4.2. Test current consumption of component Y110 (Three-disk thermostat valve). 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
2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)       Copyright ? 2013, ALLDATA     10.52SS        Page 8
- 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 sequence
- Measure direct current with multimeter between sockets [F.4] 100 and [M.54] 54 of the 126-pole socket box tester. - Switch on ignition. Specified value
- Amperage[0.6...1.2] A 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
- N10/1f57 (Fuse 57) - N10/1k (Circuit 87 relay engine) - Check lines from component N3/10 (ME-SFI [ME] control unit) to component 110 (Three-disk thermostat valve). - 110 (Three-disk thermostat valve) End of test

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