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Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Isuzu Hombre. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic II (OBD-II) system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK in SELF-DIAGNOSTICS - INTRODUCTION article. After performing OBD-II system check, go to next step.
  2. Replace PCM. Program replacement PCM using appropriate equipment. See PROGRAMMING . After replacing PCM, go to next step.
  3. Install Tech 2 scan tool. Using scan tool, CLEAR INFO or CLEAR DTCS function to clear DTC. Start and warm engine to normal operating temperature. Operate vehicle within conditions for setting DTC. If scan tool indicates diagnostic has ran and passed, go to next step. If scan tool does not indicate diagnostic has ran and passed, repeat step  2.
  4. Check if any additional DTC(s) are present. If additional DTCs are present, diagnose affected DTC first. If no other DTCs are present, system is okay.
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