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5-228 Antilock Brake System
Test Description
The number(s) below refer to the step number(s) on
the· diagnostic table.
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.
ABS Indicator Inoperative
Step
Action
Value(s)
Yes
DEFINITION: ABS indicator does not turn ON during the Instrument Panel Cluster (IPC) bulb check and no
ABS/TCS DTC(s) set.
Was the Diagnostic System Check performed?
1
-
Go to Step 2
1.
Using a scan tool in the lnstrumentPanel Cluster
Special Functions.
2.
Go to WOW Instrument Panel in Output Control.
2
:
3. In the WOW mode you can turn on or off the
-
instrument panel indicators.
All indicators will turn ON when commanded on.
Does the ABS Indicator turn on then off?
Go to Step 3
Replace the EBCM. Refer to Electronic Brake Control
Go to A
3
Module (EBCM) Replacement.
-
Diagnostic
Is the replacement complete?
System
Check-ABS
1.
Disconnect the Instrument Cluster and connect a Test
Light across the appropraiate power and ground
terminals.
2.
Test Light OFF, repair open in power or ground
4
circuit to cluster.
-
3. Test Light ON, check connector for poor connection
Go to A
to the cluster.
Diagnostic
4. If OK, replace the Instrument Cluster IP Cluster
System
Replacement.
Check-ABS
Brakes
(
No
Go to A
Diagnostic
System
Check-ABS
Go to Step 4
-
(
-
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