Key On Engine Running (Koer) Self-Test - Innova 5300LaT User Manual

3. The Ford OBD1 System Menu displays.
4. Highlight Timing Check, then press ENTER
The Select Model Year screen displays.
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5. Highlight the vehicle model year, then press the ENTER
For 1993 and newer vehicles: The message "Follow instructions in
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vehicle service manual to perform timing check" displays. Press the
SYSTEM MENU
vehicle service manual for procedures.
For 1992 and older vehicles: The message "Warm up engine to
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operating temperature" displays.
Start and warm the engine to normal operating temperature. Press the ENTER
6.
7. When prompted, turn off all vehicle accessories, turn the ignition key OFF and wait for the on-screen prompt. If
you wish to exit the Timing Check procedure currently, press the SYSTEM MENU
8. When instructed, start the engine, and press the ENTER
A "One moment please preparation for test is in progress" message
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shows temporarily, followed by the message "Perform Timing Check
within two minutes."
Perform the Timing Check as follows:
9.
The vehicle's computer is programmed to advance ignition timing
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20° (±3°) above the vehicle's "base timing" value, and to freeze this
setting for two minutes from the time the "Perform Timing Check within
2 minutes" message displays.
Within this two-minute period, follow instructions in the vehicle's service repair manual to check
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the ignition timing with a timing light and ensure that it is 20° above the specified base timing
value (±3°).
10. If timing light readings are within the acceptable range:
Base timing and the vehicle computer's ability to advance timing are working properly.
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Proceed to the KOER Self-Test.
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11. If timing light readings are not within the acceptable range:
Base timing may be out of adjustment, or the computer may have problems with the timing
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advance circuit.
Refer to the vehicle's service repair manual for procedures on adjusting and/or repairing
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ignition timing. Repairs to ignition timing must be made before proceeding to the KOER Test.

KEY ON ENGINE RUNNING (KOER) SELF-TEST

NOTE: Check your vehicle thoroughly before performing any test.
NOTE: ALWAYS
.
button to return to the Ford Menu. Refer to the
observe safety precautions whenever working on a vehicle.
OBD1 DIAGNOSTICS
Ford OBD1 Systems
button.
button to continue.
button.
button.
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