![]() A single digit number of three will be reported by three flashes. It will represent itself as a flash on the Check Engine lamp display on the instrument panel. During the Self test sequence, a DTC is reported by the Check Engine lamp. The instrument panel Check Engine lamp will remain on when a hard fault is present. The Check Engine lamp can be used to read DTCs.In some cases this action may result in a slight change in vehicle driveability. If such a fault occurs, the EEC-IV processor will substitute a value or values and continue operating. The MIL lamp is intended to alert the driver of certain malfunctions in the engine control system.Use the Analog voltmeter or Test light method, not both.Įxc DI 7.3L Turbo Diesel, Merkur (2.9L), Villager & 85–88 2.3L Engine When a diagnostic trouble code is reported on the analog voltmeter for a functional test, it will represent itself as a pulsing or sweeping movement of the voltmeter’s needle across the dial face. Connect analog voltmeter to data link connector located in engine compartment.Accessing Ford OBD1 Trouble Codes Using Analog VoltmeterĮxc. For an OBD2 code list, please see our Ford code list or the appropriate generic list. NOTE: 96 & later are OBD2 systems and require a scanner. Using Overdrive Cancel/Transmission MIL (OCIL/TMIL).
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