Preliminary Inspection
WARNING: This page is about a different car, the 2002 Toyota Avalon and 2001 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
Prior to diagnosing transaxle electronic control system, ensure throttle and shift cables are properly adjusted and fluid level is correct. Ensure engine starts with gearshift lever in Park and Neutral to ensure proper adjustment of PNP switch. Ensure all system-related fuses are okay. Check system wire harnesses for proper routing. Verify all harness and component connections are clean and tight. See WIRING DIAGRAMS . Repair as necessary. If area of fault cannot be located or repaired during preliminary inspection, begin diagnosis of self-diagnostic system. See RETRIEVING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM.