1994 Ford Ranger diagnostic

Tiny
JMOUNIER
  • MEMBER
  • 1994 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 119,000 MILES
How do you jump the diagnostic connector to retrieve stored codes through the malfunction indicator lamp
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Saturday, March 14th, 2009 AT 7:06 PM

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Tiny
BMRFIXIT
  • EXPERT
KOEO & KOER SELF-TEST Codes
All service codes are 2- or 3-digit numbers. PCM outputs codes one digit at a time. These codes indicate current faults in system and should be serviced in order of appearance.
Codes are shown as voltage pulses. If using MIL/CHECK ENGINE light, service codes are displayed as light pulses. If using Volt-Ohmmeter (VOM), service codes are displayed as needle sweeps. See Fig.
Pay careful attention to length of pauses in order to read codes correctly. A 1/2-second pause occurs between number of sweeps in a digit and a 2-second pause occurs between digits in a code. A 4-second pause occurs between each code. KOEO codes are separated from Continuous Memory Codes by a 6-second delay, a single 1/2-second sweep (Separator) and another 6-second delay. Record codes in order received.
Scan tester, if used, will count pulses and display them as a digital code. Star Series Tester will add a zero (0 ) to single-digit Separator Code (10) and Dynamic Response Code (10). Dynamic Response Code is displayed in KOER SELF-TEST.


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Saturday, March 14th, 2009 AT 7:38 PM

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