U1132

210901 - U1132

Information saved in
DME

Fault code
210901 - U1132

Fault text
Alternator, communication: no communication

Fault description
The diagnostic function monitors communications between
DME and alternator.

Condition for fault identification
Test condition:
The fault is recognized when multiple DME attempts to
establish communications with the alternator remain
unanswered.
Potential problem source(s):
- Defect in BSD bus wire between DME and alternator
- Alternator defect
Terminal condition: Terminal 15
Voltage condition:
- None
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 if
it remains present for longer than 25.5 sec.

Action in service
- Check plug connection (detent) on alternator.
- Check connection wire (BSD bus) between alternator and
DME.
- Alternator replacement required only if the DME only
detects a BSD fault with the alternator (not in response to
global BSD fault)

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- 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
- Alternator usually continues to supply power to vehicle. If
no communications are present the alternator will charge at
14.3 V after the alternator speed has risen beyond roughly
3300 rpm one time.