P0691

1A2002 - P0691

Information saved in
DME

Fault code
1A2002 - P0691

Fault text
Electric fan, activation: short circuit to ground

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

Condition for fault identification
Test condition:
The fault is recognized when a short circuit to ground is
present.
Potential problem source(s):
- Defect in wiring harness
- Electric fan defective
Terminal condition: Terminal 15
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- Coolant temperature > -20 °C
Time condition:
- 11 sec.
Other conditions:
- none

Condition for fault memory entry
The fault is logged in the fault memory if it remains
continuously present for longer than 5 sec.

Action in service
- Check wiring harness between DME and electric fan
- Unplug electric fan and then measure resistance on electric
fan between ground (Pin 1) and activation (Pin 4) terminals.
If the resistance is less than 10 ohms respond by replacing
the electric fan

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
- US emissions warning lamp: off
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- none