Home ReviewsRefund
Home/Chrysler/Voyager/Chrysler Voyager IV (2000-2004)/Repair manual/Testing & Diagnostics/Engine Controls - Basic Diagnostic Procedures: Diagnosis
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Engine Controls - Basic Diagnostic Procedures: Diagnosis Chrysler Voyager IV

Testing & Diagnostics ~343 words

VISUAL INSPECTION

Most driveability problems in the engine control system result from faulty wiring, poor electrical connections or leaking air and vacuum hose connections. To avoid unnecessary component testing, perform a visual inspection before beginning self-diagnostic tests.

Visually inspect all electrical wiring, looking for chafed, stretched, cut or pinched wiring. Ensure electrical connectors fit tightly and are not corroded. Ensure vacuum hoses are properly routed and are not cracked, pinched or cut. See VACUUM DIAGRAMS - TRUCKS article. Inspect air induction system for possible vacuum leaks.

POWERTRAIN VERIFICATION TEST VER-1

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB), Smart Key Immobilizer Module (SKIM), if equipped and Occupant Restraint Controller (ORC). If replacing PCM and vehicle is equipped with a SKIM, secret key data must also be updated to enable engine starting.

  1. Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If repair procedure did not include replacing PCM, go to next step. If PCM has been replaced and has already been programmed, go to next step. If PCM has been replaced but has not been programmed, program PCM and clear DTCs. See «PROGRAMMING»(ref-99020-S27359190652001061300000) . After PCM has been programmed, go to next step.
  2. Inspect engine oil for fuel contamination. Change engine oil and filter as necessary. Attempt to start engine. If engine starts and stays running, go to next step. If engine does not start, check for related technical service bulletins. If necessary, go to «TROUBLE SHOOTING - NO CODES - CARAVAN, TOWN & COUNTRY, & VOYAGER»(ref-99115) article for additional testing.
  3. Allow engine to reach normal operating temperature. Using scan tool, verify that additional DTCs are not set and all components are operating properly. If any DTCs are set, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - CARAVAN, TOWN & COUNTRY, & VOYAGER article.

See also:
• WIRING DIAGRAMS

More articles — Engine Controls - Basic Diagnostic Procedures