2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 262

- Check voltage supply according to wiring diagram.

4. Check component Y110 (Three-disk thermostat valve).

Test 4.1: Component Y110 (Three-disk thermostat valve) is mechanically damaged or it sticks.

Test 4.2: Test current consumption of component Y110 (Three-disk thermostat valve).

4.1. Component Y110 (Three-disk thermostat valve) is mechanically damaged or it sticks.

Test 4.1.1: Y110 (Three-disk thermostat valve) : Coolant temperature is not reached.

Test 4.1.2: Y110 (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 ECU required.

4.1.2. Y110 (Three-disk thermostat valve) : Coolant temperature is too high.

Warning!Communication with ECU required.

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

- 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