2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 812

1057

This fault can be ignored and erased.

Possible cause:

- This fault can be ignored and erased.

Affected functions:

- Engine diagnosis

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Test 1: This fault can be ignored and erased.

1. This fault can be ignored and erased.

Note:This fault can be ignored and erased.

1061

The load limit is active.

Test 1: Check component B2/5b1 (Intake air temperature sensor).

Test 2: Check component M16/6 (Throttle valve actuator).

Test 3: Possible cause:

- B2/5 (Hot film mass air flow sensor)

- M16/6 (Throttle valve actuator)

- Selfadaptation of mixture formation

Affected functions:

- Engine output

Test 4: Check component B2/5 (Hot film mass air flow sensor).

Test 5: Check self-adaptation of mixture formation.

1. Check component B2/5b1 (Intake air temperature sensor).

Test 1.1: Check component B2/5b1 (Intake air temperature sensor) using actual value.

Test 1.2: Check plausibility of actual value B2/5b1 (Intake air temperature sensor) in control module ME 9.7.

Test 1.3: Check internal resistance of component B2/5b1 (Intake air temperature sensor).

1.1. Check component B2/5b1 (Intake air temperature sensor) using actual value.

Test prerequisites

- Switch off ignition.

- Leave vehicle with engine hood open for > 12 h.

Note

- The test prerequisites must be fulfilled for the test result to be meaningful.

Test sequence

- Switch on ignition.

Status of relevant actual value:

- Intake air temperature:Warning! Communication with ECU required.

- Ambient temperature:Warning! Communication with ECU required.

Specified value

- The intake air temperature may be max. 5锟斤拷 C below the ambient temperature or 15锟斤拷 C above the ambient temperature.