P0597 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)

********************************************************************P0597
R48 (Two­disk thermostat heating element) : Open circuit (P0597)
Possible cause:
­ Z7/36 (Circuit 87 M2e connector sleeve)
­ R48 (Two­disk thermostat heating element)
­ K40/4f44 (Fuse 44)
­ K40/4kK (Engine electronics and chassis relay)
Affected functions:
­
­
Heating
Engine cooling
­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­
Test 1: Arrangement of fuses
Test 2: Check component R48 (Two­disk thermostat heating element).
Test 3: Power supply
1. Arrangement of fuses
End of test
2. Check component R48 (Two­disk thermostat heating element).
Test 2.1: Component R48 (Two­disk thermostat heating element) is mechanically damaged or it sticks.
Test 2.2: Test current consumption of component R48 (Two­disk thermostat heating element).
2.1. Component R48 (Two­disk thermostat heating element) is mechanically damaged or it sticks.
Test 2.1.1: R48 (Two­disk thermostat heating element) : Coolant temperature is not reached.
10.52SS
Page 462010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Test 2.1.2: R48 (Two­disk thermostat heating element) : Coolant temperature is too high.
2.1.1. R48 (Two­disk thermostat heating element) : Coolant temperature is not reached.
Warning!Communication with ECU required.
2.1.2. R48 (Two­disk thermostat heating element) : Coolant temperature is too high.
Warning!Communication with ECU required.
2.2. Test current consumption of component R48 (Two­disk thermostat heating element).
Figure legend
­ A ­ConnectionTest cable 35­pin socket box
­ 001 ­Sockets of component N3/10 (ME­SFI [ME] control unit)
­ 05 ­35­pin socket box
­ 050 ­126­pin socket box
­ 108 ­Test cable 266 589 01 63 00
­ N3/10 (ME­SFI [ME] control unit)
­ II 1­63ConnectionTest cable
­ III 64­126ConnectionTest cable
Warning!
­
­
Connection A of test cable 108 may NOT be connected to connection B of the 126­pin socket box (050).
Test sequence
­ Switch off ignition.
­ Connect socket box (126­pin) to component N3/10 (ME­SFI [ME] control unit).
­ Measure direct current with multimeter between sockets [F.4] 100 and [M.54] 54 of the 126­pole socket box tester.
­ Switch on ignition.
Specified value:
­
Amperage[0.6...1.2] A
Page 472010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 48
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
­ K40/4f44 (Fuse 44)
­ K40/4kM (Circuit 30z relay)
­ Check lines from component N3/10 (ME­SFI [ME] control unit) to component R48 (Two­disk thermostat heating element).
­ R48 (Two­disk thermostat heating element)
End of test
3. Power supply
Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Possible cause and remedy
­
Check voltage supply according to wiring diagram.