Abs Indicator On No Otc Set - GMC chervolet camaro 1999 Service Manual

)
Brakes Antilock Brake System 5-239
ABS Indicator On No DTC Set
Data Link
iHot
tn
RUN, Bulb Test And START
I
Connector
r - - - - - - - - - - - - ,
IP
(DLC)
I G3
~
Not used
I Fuse
21
I H3 10A I
Block
0.35
p' c i"
1132
~ _ _ _ _ _ _ _ _ _ _ _
H4_
~
r - - - - - - _
1 _ ------------,
Sta
0.5 PNK 39
~~k
r
I
Connector
(DLCl ,.
I Connector
~
~~~----- ------------l~
S206
---+t.:_j
J
L
0.35 PNK 39
0.35 LT BLU 1122
0.35 GRY 1036
BS
...... Instrument
A3
~ Cluster
~ C200D
r
---------------------------,
C200A
0.35 LT BLU 1122
I
I
I
I
I
I
(J).
LOW
(!)
ABS
(!)
(Chevrolet)
I:\ Brake
Solid
~
TRAC ~INOP
~
ASA Off
\V~
Class 2
State _ _ _.
(Pontiac)
Data
Logic
TCS
Off
L--- -----------------------
.I
815 A5
0.35 BU< 451
P100
$215 - - - - - - .,
25
r - -
~
- - ,
Electronic
I
oata
I
Brake/Traction
0.8BLK
451
E C220
P110
0.8BLK 451
I
I
...
I I Control Module $110 - - - - - -
.J
Brake
Warning
Cell41
I
l(EBTCM}
I I
.&
3 BU< 451
I
I~~
L------.1~
Circuit Description
The Instrument Panel Cluster (IPC) turns the ABS
Indicator on during the IPC bulb check for
approximately 3 seconds when the ignition switch is
turned to the
ON position. If the EBCM/EBTCM sets a
Diagnostic Trouble Code (DTC) the EBCM/EBTCM
sends a class 2 message to the I PC to command the
ABS Indicator on.
Diagnostic Aids
• It is very important that a thorough inspection of
the wiring and connectors be performed. Failure
to carefully and fully inspect wiring and connectors
may result in misdiagnosis, causing part
replacement with reappearance of the malfunction.
• Thoroughly inspect any circuitry that may be
causing the complaint for the following conditions:
- Backed out terminals
- Improper mating
G110
421906
- Broken locks
- Improperly formed or damaged terminals
- Poor terminal-to-wiring connections
- Physical damage to the wiring harness
• The following conditions may cause an intermittent
malfunction:
- A poor connection
- Rubbed-through wire insulation
- A broken wire inside the insulation
• If an intermittent malfunction exists refer to
lntermittents and Poor Connections Diagnosis in
Wiring Systems.
2. Checks if the scan tool can turn on and off all the
indicator lamps in the instrument cluster.
4. Checks if the circuits going to the instrument
cluster or the cluster is at fault.