GMC chervolet camaro 1999 Service Manual page 721

5-246 Antilock Brake System Brakes
Low Traction Indicator Inoperative
Step
Action Value(s)
Yes
No
DEFINITION: LOW TRAC Indicator never comes on.
,,,·,
Was the Diagnostic System Check performed? Go to ABS
1
-
Diagnostic
Go to Step2 System Check
1.
Using a scan tool in the Instrument Panel 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 LOW TRAC Indicator turn on then off?
Go to Step3
Go to Step 4
Replace the EBCM/EBTCM. Refer to Electronic Brake
Goto ABS
3
Control Module (EBCM) Replacement.
-
Diagnostic
-
Is the replacement complete?
System Check
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
to the cluster.
Goto ABS
4. If OK, replace the Instrument Cluster IP Cluster
Diagnostic
Replacement. System Check
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