Actron GM Code Scanner CP9001 - Manual (Page 82)

82
Reading ABS Codes:
Teves Mark I (Version B)
IMPORTANT: Perform all steps in
PRE-DIAGNOSTIC VISUAL INSPEC-
TION and FUNCTIONAL CHECK
before reading ABS codes!
1) Safety First!
• Set the parking brake.
• Put shift lever in PARK (automatic
transmission) or NEUTRAL
(manual transmission).
• Block the drive wheels.
• Make sure ignition key is in OFF
position.
2) Verify Codes are Stored
• Turn the ignition key to the ON
position, but do not start the
engine.
• Wait 30 seconds.
• Observe anti-lock
light...
– Light ON: Codes are stored.
Proceed with testing.
– Light OFF: No codes are stored.
Stop testing.
• Turn ignition key OFF.
3) Have a Pencil and Paper Ready
This is for writing down all the codes.
4) Find the Computer Test Connector
• Service manuals call this
connector the Assembly Line
Diagnostic Link (ALDL) connector.
It may also be called the Assembly
Line Communication Link (ALCL)
or simply test connector.
• The connector is located under the
dashboard on the driver’s side.
• The connector may be in full view,
OF
F
ON
O
FF
ON
T E S T
ABS ENGINE
TM
GM 1982 & higher - CP 9001 Ca r C om pu ter Co de R ead er
or it may be recessed behind a
panel. An opening in the panel
allows access to recessed
connectors.
• The connector may have a slip-on
cover labeled “Diagnostic
Connector.” Remove cover for
testing. Replace cover after
testing. Some
vehicles
require this
cover in place
for proper
operation.
5) Verify Ignition
Key is OFF
6) Put TEST switch on ABS
7) Plug the Code Scanner into the
Test Connector
• The Code Scanner only fits ONE
WAY into the test connector.
• The Code Scanner will not harm
the vehicle engine computer.
Note: The Code Scanner does not
use all of the test connector
contacts. Also, one Code Scanner
pin may plug into
an empty test
connector
position. This is
normal.
8) Turn Ignition Key to ON Position
but DO NOT START THE ENGINE
WARNING: Stay away from the
radiator cooling fan! It may turn
on.
9) Get a Trouble
Code from
Flashing “Anti-
Lock” Light
• All codes are two (2) digits long.