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Home >> American Motors >> 1982 >> Spirit Base, 2D Hatchback, 2.5L Eng VIN B, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computer Controlled Catalytic Converter >> Diagnostic Procedure >> Diagnostic Circuit Check

Diagnostic Circuit Check

  1. If complaint is test lamp related, this check will lead to probable problem area, if malfunction exists. Enter diagnostics and record stored trouble codes. Begin diagnosis with lowest numbered code which is displayed and refer to appropriate trouble code chart.
  2. If code "52" or "53" is displayed, check PROM installation before replacing ECM.
  3. If codes "54" or "55" are displayed with another code, always refer to diagnostic chart for code "54" or "55" first, then proceed to lowest numbered code.
    NOTE: Any time codes "51", "52", "53", "54" or "55" are displayed with another code, start with "50-series" code first, then proceed to lowest numbered code.
  4. If codes "44" and "55" are both displayed, replace oxygen sensor and perform System Operational Test.
  5. If "intermittent failure" codes "13", "15", "44" or "45" are displayed, use diagnostic chart for corresponding "hard failure" code.
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