Ford Historic (OBD I) Diagnostics

!CAUTION

Avoid cooling fan! It may turn on during test.

During testing, it is VERY IMPORTANT that each required step be performed when prompted by the Scan Tool. Failure to perform these steps may set DTC(s) in the PCM.

During this test, the Scan Tool prompts the user to perform the following steps:

Press speed control ON button.

Press speed control OFF, RESUME, COAST, and ACCEL but-

tons.

Tap brake and clutch pedals.

4.When test is completed.

•Turn the ignition key off. •Press ENTER to view the KOEO failures.

Test Completed

KOEO codes read. Turn ignition key off.

Press ENTER to cont.

5. View and write down DTCs.

 

 

 

 

 

6

•Use the UP or DOWN

 

1 of 3

arrow keys.

568

ENG

 

 

ENG indicates that DTC is from the engine or powertrain computer.

6.Return to Diagnostic Codes Menu. •Press BACK.

SCVAC Failure: Speed

 

Control Vacuum



Circuit Failure

 

 

IVSC KOEO

 

 

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Image 139
Actron CP9190 manual 568, When test is completed