Computed timing check (1984-1991 eec-iv vehicles) – Actron KAL9640B User Manual

Page 79

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Ford Historic Self-Test Routines

6

If no problems exist, Code 11 or 111 will

be displayed.

If vehicle problems exist, codes are set.

Use

UP/DOWN arrow keys to view

codes. Write down codes for reference.

When done, press

FUNC to return to the Ford Function List screen.

Computed Timing Check (1984-1991 EEC-IV Vehicles)

This option of the KOER Read Codes function allows you to check both the

“Base” engine timing (no computer adjustment) and the ability of the computer

to control spark advance.

This does not apply to 7.3L diesel vehicles.

Connect a Timing Light to the vehicle in accordance with the manufacturer’s

instructions. (For 2.3L dual plug engines, use exhaust side plug. Refer to

ignition system section in vehicle service manual for specific instructions.)

Select Computed Timing and press

ENTER.

Follow the instructions step-by-step.

Failure to perform these steps may set

a false DTC in the PCM — observe the

display.

Avoid Cooling Fan! It May Turn On During Test.

1) Set Parking Brake.
2) Transmission In Park Or Neutral.
3) Turn A/C Off.
4) Start Engine — Let Idle Until Hot.
5) Turn Ign Key Off.
6) Wait 10 Seconds. Start Engine — Let Idle.
7) If Vehicle Has A Manual Transmission, Release Clutch.

KOER Code

111

System Pass Code
No Faults Detected [
During KOER Test ~

KOER Code

326

PFE/DPFE EGR Sensor]
Below Min. Voltage [

~

Select Code Type

1)Fast Codes
2)Slow Codes

` 3)Computed Timing

!

CAUTION

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