No Communication With Ebcm - GMC chevrolet camaro 2000 Service Manual

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Brakes Antilock Brake System 5-223
No Communication with EBCM
! Hot At All Times!
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Hot In RUN!
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Wiring
H9 ABS IGN Distribution
Wmng Data Link
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ion ABSBAT-1 ABSBAT-2 I I
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scrematlcs MaxiFuse® K2 MaxlFuse®
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Harness
MlnlFuse Schematics
Harness
Connector
In
Wiring K4 40A 50A
Junction
I HS
10A
In Wiring I
Junction (DLC)
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1Power
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Distribution
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Schematics
In
Wiring
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Systems
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ABS BAT SOL I
Wiring
MlnlFuse
® :
Harness
25 A
Junction
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Datalink ·. I
p ce
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connector
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Communications · I ..;
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1122
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BLK
651 0.35
LT
BLU 1122
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"'Electronlc
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Positive Positive Positive · ·
Data
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Brake
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Voltage Voltage Voltage Line
I Control
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Class 2 I
Module
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G101
Circuit Description
The Class 2 serial data line allows a.II the modules on
the line to transmit information to each other as
needed. Each module is assigned an ID and all the
information sent out on the line is assigned a
priority by which it is received. When the ignition
switch is turned to the run position each module begins
to send and receive informatioh. Each module on
the Class 2 serial data line knows what information .it
needs to send out and what information it should
be receiving. What the modules do not know is which
module is supposed to send them the information.
This iniormation is only learned after the module has
received the information it needs along with the ID
of the module that sent the information. This
information is then remembered until the ignition .
switch is truned off.
519691
Diagnostic Aids
• Thoroughly inspect the wiring and the connectors.
Failure to carefully and fully inspect the wiring
and the connectors can result in misdiagnosis.
Misdiagnosis may cause replacement of parts
without repairing the malfunction.
• If an intermittent malfunction exists, refer to
Inducing Intermittent Fault Conditions in wiring
system.