Engine Controls System: 138601

138601 - P304C

Information saved in
DME

Fault code
138601 - P304C

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

Fault description
The diagnostic function monitors whether the travel-range
limits are reached during the self-test.

Condition for fault identification
Test condition:
The fault is recognized when the system fails to reach the
upper limit of its travel range (radiator vent slat assembly
open).
Potential problem source(s):
- Mechanical defect in radiator vent slat mechanism (for
instance: broken control linkage,...)
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- 6 sec. over 30 km/h
Other conditions:
- None

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 freedom of
movement (perform system test), repair mechanical
components as required
- Replace 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
- ECE electronic engine power reduction: off
- CC message: none
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
None