Actron GM Code Scanner CP9001 - Manual (Page 83)

83
TM
GM 1982 & higher - CP 9001 Car C om puter C
ode Reader
• Count flashes to get trouble codes.
Flashes start after about a 4 second
delay.
– The first digit is flashed, then...
– there is a 3 second pause, then...
– the second digit is flashed, then...
– the anti-lock light turns ON and
stays ON. Do not count this steady
light as a “flash.”
• EXAMPLES:
Code 12 looks like:
❊
PAUSE
❊❊
FLASH (3 second pause) FLASH
FLASH
(then light stays on.)
(FLASH = 1, FLASH FLASH = 2.
Put 1 and 2 together = code 12.)
Code 23 looks like:
❊❊
PAUSE
❊❊❊
FLASH FLASH (3 second pause)
FLASH FLASH FLASH
(then light stays on.)
10)Get More Codes (if any) from
Flashing “Anti-Lock” Light
• Do this step after first code has
been flashed and anti-lock light is
ON steadily.
• Do NOT turn
ignition switch
off.
– Remove Code
Scanner from
test connector. Then...
– Re-install Code Scanner into test
connector.
– The next ABS trouble code (if
any) will be flashed in the same
manner as the first code.
• Repeat this step until all trouble
codes have been read. The ABS
computer can store up to 7 trouble
codes.
OF
F ON
11)Turn Ignition
Key OFF
12)Remove Code
Scanner and
Re-install
Connector
Cover, if
supplied
The computer
system is now back to normal
operation.
13)Refer to ABS Code Meanings on
page 82 (Teves Mark ll, Version B)
This completes the code reading
procedure.
At this point you can either:
• Have your vehicle professionally
serviced. Trouble codes indicate
problems found by the computer.
or,
• Repair the vehicle yourself using
trouble codes to help pinpoint the
problem.
IMPORTANT: Always follow
vehicle service manual proce-
dures for any ABS repairs!
(Manual listings on page 4)
Erasing ABS Codes from Computer
Memory:
Teves Mark II (Version B)
Erase codes from memory whenever
you complete a repair or to see if a
problem will occur again.
1) IMPORTANT! - Trouble codes
cannot be cleared until they have
been read! Refer to READING ABS
CODES, page 80.
2) Drive the vehicle at a speed of
greater than 20 MPH. Trouble
codes should automatically clear.