47
– Tap on
end of
exten-
sion
with a
light (4
oz.)
hammer for 15 seconds.
– DO NOT TAP SENSOR!
7) Get Service Codes From the
Flashing STO Light.
• Count flashes on the STO light. This
is done the same way as in Self-Test
Part 2. (Ignore any flashes lasting
longer than 1 second.)
Code 12 looks like:
❊
PAUSE
❊❊
FLASH (pause) FLASH FLASH
(FLASH = 1, FLASH FLASH = 2.
(Put 1 and 2 together = code 12.)
• All codes are 2 digits long.
• After all codes are sent, the whole
group is sent again just one more
time (so you can double check your
code list).
Example of code series 12 and 42:
❊
PAUSE
❊❊
FLASH (pause) FLASH FLASH
(longer pause)
❊❊❊❊
PAUSE
❊❊
FLASH FLASH FLASH FLASH (pause)
FLASH FLASH
(longer pause)
❊
PAUSE
❊❊
FLASH (pause) FLASH FLASH
(longer pause)
❊❊❊❊
PAUSE
❊❊
FLASH FLASH FLASH FLASH (pause)
FLASH FLASH
8) Turn Ignition Key to OFF Position.
9) Remove Code Scanner.
At this point you can either:
• Have your vehicle professionally
serviced. Codes indicate problems
found by the computer.
or,
• Repair the vehicle yourself using
service codes to help pinpoint the
problem. Refer to Test Results Chart.
Code definitions are listed in Section
8, “Code Meanings (MCU system).”
