Actron 9640A manual Star Test Mode EEC-IV, Mecs and MCU Vehi l s, Reading Ivsc Koer Codes

Ford Historic Self-Test Routines

Use the	arrow keys to scroll
through the KOEO Code listing. Be sure
to write down any codes for reference.

Reading IVSC KOER Codes

Select Read KOER Codes from the sub-menu and press	. To r trieve
codes, follow the instructions on the tool screen as follows:

1) Set Parking Brake.

2) Put 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.

During testing, the tool will prompt the user to p ess the vehicle’s Speed Control ON Button.

			Exhaust gases are harmful or lethal. Always operate vehi-
	! WARNING
			cle in a well-ventilated areaIVSCircuitSCVAC. KOEOCode568Failure:VacumSpeed~
			The Read KOER test is done with he engine running. Do
	!
			not over-rev engine. Observe all safety precautions.
	CAUTION
			UP/DOWN
	✓
		During testing, it is VERY IMPORTANT that each required step be per-
		formed when prompted by the scan tool. Failu e perform th se st ps
		may set DTCs in the PCM. Be sure to obse ve the tool display for indica-
		tions to perform these steps.			ontrol
	✓ Do not touch the throttle pedal during testing. The user will be reminded
6
		of this by the scan tool.
	Once the codes have been read by the scan tool, it will instruct the user to turn
	the ignition key off:					ENTER
	Use the			arrow keys to
	scroll through the KOER Codes. Be
	sure to write down any codes for ref-
	erence.
	When done, press			to return to the
	Ford Function List.

STAR Test Mode (EEC-IV, MECS and MCU Vehi l s)

The STAR Test Mode can be used to retrieve DTCs from the PCM or other STAR (Self-Test Automatic Readout) compatible controllers installed in the

vehicle. STAR Test Mode functions largely the same way and serv	the same
purpose as running KOEO and KOER tests. It is g nerally used	last resort

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to check for DTCs in systems which may not be covered by KOEO and KOER
testing (i.e. - Computer Ride Control suspe ion systems).
UP/DOWNFUNC	DecreaseILowRPMnsufficientRPMVSCKOERCode37.Decrease ~[