1A2604

1A2604 - P144C

Information saved in
DME

Fault code
1A2604 - P144C

Fault text
Fuse relay, electric fan, activation: open circuit

Fault description
The diagnostic function monitors the wire between the
electric fan cutoff relay and the DME.

Condition for fault identification
Test condition:
The fault is recognized when the electric fan has no power
supply.
Potential problem source(s):
- Defective wiring harness
- Cutoff relay for electric fan defective
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

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

Action in service
- Check wiring harness between DME and electric fan cutoff
relay
- Check cutoff relay (with Terminal 15 off: 0 V at both
screw connections, 12V at both screw connections when
voltage is applied: Relay makes a loud click and the
measured resistance between the two screw connections is
roughly 0 ohms)
- Replace cutoff relay

Fault effect and breakdown warning
Breakdown notice:
Probably not possible to activate electric fan, continued
driving at reduced power possible.
Possible apparent symptoms:
Engine can overheat, breakdown in extreme cases

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