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Home >> Chevrolet >> 1998 >> Metro LSi, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 1.3L >> Diagnostic Trouble Codes (DTCS) >> DTC P0603: Powertrain Control Module (Pcm) Memory Reset >> Diagnosis & Repair
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Diagnosis & Repair

  1. Perform On-Board Diagnostic (OBD) System Check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK. After performing OBD system check, go to next step.
  2. Connect scan tool to DLC. Using scan tool, clear DTC information. Turn ignition on to initialize PCM. Start engine. Road test vehicle. If necessary, repeat road test. If vehicle does not start, crank engine so that DTC P0603 can set. If DTC P0603 resets, go to next step. If DTC P0603 does not reset, go to DIAGNOSTIC AIDS. Check for an intermittent problem. See TESTS W/O CODES - 1.3L article.
  3. Replace PCM. After repairs, go to next step.
  4. After repairs, using scan tool, clear DTC information. Road test vehicle within freeze frame conditions that set DTC. Check for DTCs. If no DTCs are stored, repair is complete. If any DTCs are set, diagnose DTC(s).
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