GMC chevrolet camaro 2000 Service Manual page 689

5-216 Antilock Brake System
Brakes
• The following conditions may cause an intermittent
Test Description
malfunction:
- A poor connection
The number(s) below refer to the step number(s) on (
the diagnostic table.
..., Rubbed-through wire insulation
- A broken wire inside the insulation
2. Checks if EBCM is receiving a traction contlol
switch message from the switch.
• If an intermittent malfunction exists refer Inducing
Intermittent Fault Conditions in Wiring System
3. Checks if the scan tool can turn on and off all the
indicator lamps in the instrument cluster.
5. Checks if the EBCM or Traction Control Sw~ch is
at fault.
for further diagnosis.
Traction Control System Off lndica.tor Inoperative
Step Action Value(s) Yes
No
DEFINITION: TCS Off indicator is Inoperative when attempting to disable traction control.
Was the Diagnostic System Check performed?
Go to A
1
-
Diagnostic
System
Go to Step 2. Check-ABS
1. Turn the ignition switch to the RUN position,
engine off.
2. Using a scan tool enter TCS Data List.
2
3.
While monitoring the TCS On/Off switch status, press
-
and release the TCS On/Off switch.
Does the switch status change from pressed to released
as the TCS switch is pressed and released?
Go to Step 3 Go to Step 5
1. Using a scan tool in the instrument Pannel Cluster
Special Function.
2. Go to WOW Instrument Panel in Output Control.
3 3. In the WOW mode you can turn on or off the
-
instrument panel indicators.
4. All indicators will turn ON when commanded on.
Does the TCS OFF indicator turn on then off? Go to Step 11 Go to Step 4
1. Disconnect Instrument Cluster and connect a test
light across the appropraiate power and ground
terminals.
2. Test Light OFF, repair open in power or ground
circuit to Cluster.
4
3.
Test Light ON, Check connector for poor connection
-
-
to Cluster.
Go to Step A
4. If OK, replace the Instrument Cluster IP Cluster
Diagnostic
Replacement.
System
Is the instrument cluster replacement complete?
Check-ABS
1. Remove the traction control switch and disconnect
the connector. Refer to Traction Control Switch
Replacement (Chevrolet)
2. Using a scan tool in ABS/TC Data List re.ad the
5
TCS Switch Status.
-
3. Connect a jumper wire between te~minals E and F of
the Traction Control Switch harness connector.
Does the TCS Switch status read pressed with the jumper
wire connected?
Go toStep6 Go to Step 7
0
Replace the Traction Control Switch. Refer to Traction Go to A
6
Control Switch Replacement (Chevrolet).
-
Diagnostic
-
Is the replacement complete?
.System
Check-ABS
(
.