46
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
6) Turn Ignition Key to OFF Position.
7) Remove Code Scanner.
For Vehicles With V-6 & V-8
Engines:
(Refer to page 43 for I-4 and I-6
engines.)
1) Verify:
• Ignition Key is in OFF Position.
• Code Scanner is Connected.
• HOLD/TEST Switch is in TEST
Position.
WARNING: The next step involves
starting the engine. Observe
safety precautions.
• Always operate vehicle in a well
ventilated area.
Do NOT inhale exhaust gases –
they are very poisonous!
• Set the parking brake.
• Put shift lever in PARK (automatic
transmission) or NEUTRAL
(manual transmission).
• Block the drive wheels.
• Stay away from moving engine
parts.
2) Start the Engine.
3) Warm-Up Engine.
• Allow engine to idle until it reaches
normal operating temperature.
Then...
• Run engine at 2000 RPM for 2
minutes.
4) Turn Engine Off, Then Immediately
Restart Engine and Allow to Idle.
Note: Vehicles with Throttle Kicker
actuator – the Throttle Kicker will
extend (increasing RPM) and remain
so throughout the test.
5) Get Engine Identification (ID) Code
from the Flashing STO Light.
• An engine ID code is sent after a
few seconds to signal the beginning
of KOER Self-Test.
• Count flashes on the STO light.
(Ignore any flashes lasting longer
than 1 second.)
– 6 cylinder: 3 Flashes.
– 8 cylinder: 4 Flashes.
Note: If the light does not flash or
flashes the wrong number, go back and
repeat SELF-TEST PART 3 starting
with Step 1. If the light still does not
flash correctly, you have a problem
which must be repaired before
proceeding. Refer to the vehicle service
manual “Self-Test Not Functional” (or
similar title) troubleshooting chart.
6) Test Knock Sensor (if used on
vehicle).
• If vehicle does not use knock sensor,
skip this step and go to Step 7.
• Do the following immediately after
engine ID code is sent:
– Simulate spark knock by placing a
3/8 inch socket extension (or similar
tool) on manifold near base of knock
sensor.
