2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 490

- Engine diagnosis

- Exhaust system

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

Test 1: Check component G3/6 (Right O2 sensor, after TWC [KAT]).

1. Check component G3/6 (Right O2 sensor, after TWC [KAT]).

Warning!Communication with ECU required.

0426

Heating of component G3/6 (Right O2 sensor, after TWC [KAT]) : Short circuit to ground (P0037)

Possible cause:

- G3/6 (Right O2 sensor, after TWC [KAT])

Affected functions:

- Engine diagnosis

- Exhaust system

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

Test 1: Check component G3/6 (Right O2 sensor, after TWC [KAT]).

1. Check component G3/6 (Right O2 sensor, after TWC [KAT]).

Warning!Communication with ECU required.

0427

Heating of component G3/6 (Right O2 sensor, after TWC [KAT]) : Open circuit (P0036)

Possible cause:

- G3/6 (Right O2 sensor, after TWC [KAT])

- N10/1kI (Circuit 87 relay, engine)

- N10/1f57 (Fuse 57)

- Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)

Affected functions:

- Engine diagnosis

- Exhaust system

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

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 G3/6 (Right O2 sensor, after TWC [KAT]).

1. Check power supply of component N3/10 (ME-SFI [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.