Actron 9640 user manual Pfe/Dpfe Egr, Computed Timing Check 1984-1991 EEC-IV Vehicles

Ford Historic Self-Test Routines

If no problems exist, Code 11 or 111 will be displayed.

KOER Code	111
System Pass	Code
No Faults Detected [
During KOER	Test ~

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

KOER Code	326
PFE/DPFE EGR	Sensor]

Below Min. Voltage [

~

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.

Select Code Type 1)Fast Codes 2)Slow Codes

6

Follow the instructions step-by-step. Failure to perform these steps may set a false DTC in the PCM — observe the display.

` 3)Computed Timing

!CAUTION

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.

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