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35
MBS-1P Installation
Figure 21, MBS-1P Flash Code Identification Table
Flash Code
Fault
Comments
3
Curbside front sensor signal fault.
Check curbside front sensor gap.
4
Curbside front sensor connection fault.
Check curbside front sensor resistance and electrical connections.
5
Roadside front sensor signal fault.
Check roadside front sensor gap.
6
Roadside front sensor connection fault.
Check roadside front sensor resistance and electrical connections.
7
Curbside rear sensor signal fault.
Check curbside rear sensor gap.
8
Curbside rear sensor connection fault.
Check curbside rear sensor resistance and electrical connections.
9
Roadside rear sensor signal fault.
Check roadside rear sensor gap.
10
Roadside rear sensor connection fault.
Check roadside rear sensor resistance and electrical connections.
11
Secondary PCM fault.
Separate the ECM from the
secondary
PCM. Check that the connector
and socket are secured together properly. If the fault persists, replace
the secondary PCM.
12
Primary PCM fault.
Separate the ECM from the
primary
PCM. Check that the connector
and socket are secured together properly. If the fault persists, replace
the primary PCM.
14
Low voltage to ABS.
Check tractor and trailer wiring on auxiliary and stop lamp circuits.
Check tractor battery and charging system.
15
Electronic Control Module failure.
Replace the ECM.
322UX044
NOTE:
A two-sensor system does not contain 7 through 10 blink codes and a one-PCM system does not include the 11 blink code.
The primary PCM is the PCM closest to the Electronic Control Module (ECM) and the secondary PCM is the furthest from the ECM.
