2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 2556

1.1.3.4.1.6. Transmission control

Warning!Communication with ECU required.

1.1.3.4.1.7. Motor electronics

Warning!Communication with ECU required.

1.1.3.4.1.8. Steering column module

Warning!Communication with ECU required.

E1897

Timeout of the PremAir temperature signal

Possible cause:

- B11/15 (PremAir sensor)

Affected functions:

- Power generation

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Test 1: Check component B11/15 (PremAir sensor).

1. Check component B11/15 (PremAir sensor).

Test 1.1: Check power supply of component B11/15 (PremAir sensor).

Test 1.2: Test signal cable to component B11/15 (PremAir sensor).

Test 1.3: NoteThe PremAir sensor must be firmly latched and bonded to the PremAir radiator.

1.1. Check power supply of component B11/15 (PremAir sensor).

Check power supply of component B11/15 (PremAir sensor).

Test prerequisite

- The actual value is not o.k.

Test sequence

- Switch off ignition.

- Detach coupling at component B11/15 (PremAir sensor).

- Measure direct voltage with multimeter between sockets [ B11/15 ] 1 and [ B11/15 ] 3

- Switch on ignition.

Specified values

- Voltage[ 11.0...14.5] V

Question

- Is the measurement value OK?