ME9.7

M16/6 (Throttle valve actuator) : The throttle valve is jamming or is stiff. (P2176)


Possible cause:

- M16/6 (Throttle valve actuator)
Affected functions:

- Engine diagnosis
- Engine running

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Test 1: Check component M16/6 (Throttle valve actuator).

1. Check component M16/6 (Throttle valve actuator).

Test 1.1: Check component M16/6 (Throttle valve actuator) using actual value.

Test 1.2: Check component M16/6m1 (Actuator motor) by means of actuation.

Test 1.3: Perform mechanical inspection of component M16/6 (Throttle valve actuator).

1.1. Check component M16/6 (Throttle valve actuator) using actual value.
Warning!Communication with ECU required.


1.2. Check component M16/6m1 (Actuator motor) by means of actuation.
Test prerequisite

- Operate engine at idling speed.
Note

- If the throttle valve angle is< 1,1°, unmetered air may be present.
Status of relevant actual value:
- Throttle valve angle:Warning! Communication with ECU required.
Move on to actuation with button F2

1.3. Perform mechanical inspection of component M16/6 (Throttle valve actuator).
Test sequence

- Switch off ignition.
- Expose component M16/6 (Throttle valve actuator).
- Slowly operate throttle flap by hand up to full load.
Specified value

- The throttle valve must not stick and must close by internal spring force.
Question

- Is the test o.k?


YES
The test is o.k..End of test

NO
The test is not o.k..Possible cause and remedy

- Check intake tract for residue and clean if necessary.If no residue is present, replace component M16/6 (Throttle valve actuator).