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Diagnostic Circuit

  1. Locate 19-pin diagnostic connector underneath cover in front passenger's footwell. Use DVOM to check wiring harness (circuit) continuity between pin No. 7 (Orange/Blue wire) of 19-pin diagnostic connector and DME control unit terminal No. 13. See Figure .
  2. Use DVOM to check wiring harness (circuit) continuity between pin No. 8 (Orange/White wire) of 19-pin diagnostic connector and DME control unit terminal No. 55. If circuit continuity does not exist, check wiring harness for open circuits or circuits shorted to ground. If circuit continuity is okay, go to next step.
  3. Use DVOM to check voltage at pin No. 7 (Orange/Blue wire) of 19-pin diagnostic connector. Repeat voltage check at pin No. 8 (Orange/White wire) of 19-pin diagnostic connector. Voltage readings must be greater than 8 volts with ignition on. If voltage is not as specified, check wiring harness for open/short circuits. See WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.
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