Test No. 42: Trunk Opener Will Not Operate Using Keyless Entry System
- Check trunk opener motor. See TRUNK OPENER MOTOR under COMPONENT TESTS. If trunk opener motor is okay, go to next step. If trunk opener motor is defective, replace trunk opener motor and recheck trunk opener operation.
- Check wiring harness and electrical connectors between trunk opener motor and body Electronic Control Unit (ECU). See WIRING DIAGRAMS in KEYLESS ENTRY SYSTEMS - AVALON article. Trunk opener motor may also be referred to as luggage compartment door opener motor. Body ECU is located at driver's side of instrument panel on the fuse/relay box. See Figure. If wiring harness and electrical connectors are okay, go to next step. If wiring harness or electrical connector are defective, repair as necessary and recheck trunk opener operation.
- Check body ECU for proper voltage and input signals. See BODY ELECTRONIC CONTROL UNIT under PIN VOLTAGE TESTS. If proper voltage and input signals exist, go to next step. If proper voltage or input signal does not exist, repair as necessary and recheck trunk opener operation.
- Replace body ECU with a known-good body ECU and recheck trunk opener operation. If trunk opener operates properly, original body ECU was defective. If trunk opener still does not operate properly, check wiring harness and electrical connectors for body ECU and trunk opener for an intermittent problem. See WIRING DIAGRAMS in KEYLESS ENTRY SYSTEMS - AVALON article. Repair wiring harness or electrical connector as necessary.