Manufacturer Code Charts: 187100

The signal of component 'Y27/9 (Left EGR positioner)' is implausible.


Possible cause:

- Y27/9 (Exhaust gas recirculation actuator)
Affected functions:

- Power generation

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Test 1: Automatic test of exhaust gas recirculation

Test 2: Check component Y27/9 (Left EGR positioner).

1. Automatic test of exhaust gas recirculation
Automatic test of exhaust gas recirculation
Test prerequisites:Coolant temperature between 80 °C and 100 °COil temperature between 80 °C and 100 °CAll electrical accessories must be switched off.Switch off the air conditioning.Intake and exhaust system without leakageOperate parking brake.Move selector lever into position P.Engine at idleStatus of the relevant actual values:
- Coolant temperature:Warning! Communication with ECU required.

- Oil temperature:Warning! Communication with ECU required.
Continue with button F2

2. Check component Y27/9 (Left EGR positioner).
Check component Exhaust gas recirculation positioner.
Figure legend

- Y27/9 (Left EGR positioner)
Procedure

- Check component Y27/9 (Left EGR positioner) for unobstructed movement by actuation.
Proceed to 'Actuation' with F2







Test prerequisite

- Engine at idle
- All electrical accessories must be switched off.
Move on to actuation with button F2

Warning!Communication with ECU required.