Actron GM Code Scanner CP9001 - Manual (Page 65)

65
• 1992 Toronado, Trofeo:
–Check fuse number 18 in the
underdash fuse block.
–Check the black and blue colored
fusible links on the positive
junction block.
• 1993 Riviera:
–Check fuse number 4 in the
interior relay center.
–Check fuse number 6 and 9 in the
underdash fuse block.
–Check the black colored M and P
fusible links on the positive
junction block.
3) Check that all ABS/TCS connec-
tors, and EBCTM (Electronic
Brake and Traction Control
Module) connectors are properly
installed (not loose).
4) Check that the parking brake
switch is functioning properly.
5) Check that the brake pressure
modulator valve ground stud is
clean and tight.
6) Check the over-voltage protection
relay and its connector.
This completes the visual inspection.
Perform FUNCTIONAL CHECK before
reading codes!
Functional Check
1) Start the engine.
The brake
warning lamp
should come ON
during engine
cranking, and turn OFF shortly after
the engine starts. If it does not,
check the brake warning lamp
circuit in accordance with vehicle
service manual instructions.
2) Turn the engine OFF. Turn the
ignition key to the ON (RUN)
position, but do not start the engine.
The anti-lock lamp should illuminate
for about 4 seconds and then turn
OFF, if no trouble codes are
currently stored. However “history”
trouble codes may be stored.
Proceed to Step 3 below. If the anti-
lock lamp stays ON, trouble codes
are stored. Proceed directly to
READING ABS CODES, page 64.
3) Drive the vehicle at least 20 MPH. If
the anti-lock lamp turns ON,
proceed to READING ABS CODES,
page 64.