P304D

138701 - P304D

Information saved in
DME

Fault code
138701 - P304D

Fault text
Radiator shutter, top, upper stop: detected too early

Fault description
The diagnostic function monitors whether the radiator vent
slat assembly closes within a specified angle of rotation.

Condition for fault identification
Test condition:
The fault is recognized when it is not possible to progress
through a specific rotational angle.
Potential problem source(s):
- Radiator vent slats physically seized (dirt, ice, snow, etc.)
Terminal condition: Terminal 15
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- None
Time condition:
- 6 sec. over 30 km/h
Other conditions:
- Once at v > 30 km/h

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Check radiator vent slat assembly for travel resistance
(perform system test)
- Note environmental conditions at time diagnostic fault
code was logged: If the temperature was 0 °C then ice
formation could be the cause
- Note environmental conditions at time diagnostic fault
code was logged: If the vehicle speed was > 150 km/h, wind
resistance may be the problem source

Fault effect and breakdown warning
Breakdown notice:
- Radiator vent slats can be opened by hand
Possible apparent symptoms:
- The engine may overheat.

Driver information
Warning light:
- ECE emissions warning lamp: off
- US emissions warning lamp: off
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- none