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Home >> Chrysler >> 2002 >> 300M Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes >> Using Scan Tool
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Using Scan Tool

  1. Turn ignition off. Connect scan tool to Data Link Connector (DLC) located below instrument panel, near steering column. See Figure. Turn ignition on, engine not running. Using scan tool manufacturer's instructions, read and record DTC (generic scan tool) or DTC message (DRBIII® scan tool), and freeze frame data.
  2. If scan tool will not power up, check for loose cable connections or bad cable. If cable connections and cable are okay, measure voltage at DLC power terminal No. 16 (Red wire). See Figure. Voltage should be at least 11 volts. If voltage is not as specified, check wiring circuit and fuse No. 18 (20-amp) in junction block behind end cover on left side of instrument panel. Repair wiring or replace fuse as necessary.
  3. Under normal operation, the DRBIII® will display one of only two error messages. USER-REQUESTED WARM BOOT error by pressing MORE and NO at the same time, or USER-REQUESTED WARM BOOT error by pressing MORE and YES at the same time. If the DRBIII® displays these error messages or any other error message, record the entire displayed error message and follow scan tool manufacturer's instructions.
  4. If scan tool displays a bus failure error message, this indicates a scan tool failure or a bus circuit failure. To diagnose and repair bus circuit failure, see COMMUNICATIONS under SYSTEM TESTS in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
  5. If any DTCs are displayed, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . After repair is complete, clear DTCs from PCM memory and perform appropriate verification test. Verification tests are located at the end of the diagnostic tests. If no DTCs are displayed, go to one of the following:
    • For starting or driveability problems, go to TROUBLE SHOOTING - NO CODES - CARS - EXCEPT SEBRING COUPE & STRATUS COUPE article for diagnosis by symptom.
    • For speed control problems and servicing information, refer to appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
    • For charging system problems, refer to appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
    • For transmission electronic controls system problems, refer to appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
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