P304B

138501 - P304B

Information saved in
DME

Fault code
138501 - P304B

Fault text
Radiator shutter, top, lower stop: not detected

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

Condition for fault identification
Test condition:
The fault is recognized when the motor rotates without
resistance but the vent slat fails to close to within a specific
angle.
Potential problem source(s):
- Mechanical defect in radiator vent slat assembly (broken
linkage)
Terminal condition: Terminal 15
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- None
Time condition:
- 12 sec.
Other conditions:
- none

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

Action in service
- Inspect mechanical components of radiator vent slat
assembly

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