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Ford Historic Self-Test Routines
6
Turn the ignition key Off and press to continue — the tool prompts the
user to retest (up to three times). If required, rerun the test to double check the
results, or to check for weaker or dead cylinders.
When done, press
to return to the
Ford Function List
.
IVSC-Speed Ctrl (EEC-IV Vehicles)
The IVSC-Speed Ctrl (Integrated Vehicle Speed Control) is Ford’s computer-
ized cruise control system on EEC-IV vehicles. It is controlled by the PCM and
contains a dedicated network of sensors, switches, and actuators. Both KOEO
and KOER Codes exist for this test. The tool provides the ability to diagnose
problems by reading DTCs.
S
elect IVSC-Speed Ctrl from the
Ford
Function List
and press .
The sub-menu Select IVSC Test is dis-
played.
Reading IVSC KOEO Codes
Select Read KOEO Codes from the sub-menu and press . Follow the
instructions on the tool screen. These instructions will prompt the user to:
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. Turn Key On-Engine Off. Do Not Start Engine
.
Avoid Cooling Fan! It May Turn On During Test.
✓ During testing, it is VERY IMPORTANT that each required step be per-
formed when prompted by the scan tool. Failure to perform these steps
may set DTC(s) in the PCM.
During this test, the tool prompts the user to perform the following steps:
❒ Press speed control ON button.
❒ Press speed control OFF, RESUME, COAST, & ACCEL buttons.
❒ Tap brake and clutch pedals.
Once the codes have been read by the
scan tool, turn the ignition key off. Press
to view the KOEO failures.
!
CAUTION