Ford Historic (OBD I) Diagnostics

If a KOER code of 98 or 998 is

detected, then the fault must be fixed before performing this function. Press the BACK key to return to the Diagnostic Codes Menu.

Otherwise, the timing remains fixed for 90 seconds to allow you to measure it with the timing light.

Computed timing is equal to the base timing plus 20 degrees before top dead center (BTDC) with 3 degrees tolerance. The base timing value is printed on the vehicle emission control information (VECI) decal.

Computed Timing

Can't run timing

check. Code 98/998 detected. Fix fault

&redo timing check.

Press BACK to exit.

Computed Timing

Timing is now fixed at base timing plus 20 degrees (+/- 3 deg). Time remaining: 1:30

2. Return to Diagnostic Codes Menu. •Press ENTER .

6

Erase Codes

The service manual may recommend erasing Continuous Memory Codes from the vehicle’s memory, and then driving the vehicle to duplicate the malfunction before beginning a diagnostic test. If KOEO codes were read using Fast Codes, the memory codes have already been erased.

EEC-IV Erase Codes

From the Diagnostic Codes Menu:

1.Select Erase Codes.

•Use the UP or DOWN arrow keys until Erase Codes is highlighted.

•Press ENTER.

Diagnostic Codes Menu

Read KOEO Codes

Read KOER Codes

Erase Codes

IVSC Speed

Ctrl



Review Data

 

 

Print Data

 

 

Code Lookup

 

 

 

 

 

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Actron CP9190 manual EEC-IV Erase Codes