Test No. 32: Automatic Lock Function Does Not Operate Even If Any Door Is Opened Within 30 Seconds After All Doors Are Unlocked By Keyless Entry System

NOTE: Automatic lock function allows 30 seconds to open the door once the door is unlocked with the keyless entry remote transmitter or the door will be locked again.

Check that retaining screw on door courtesy switch for each door is tight to provide good ground connection. Door courtesy switches are located on pillar post at rear of door. See Figure. If retaining screw for door courtesy switch is tight and good ground connection exists, go to next step. If retaining screw for door courtesy switch is loose, tighten retaining screw and recheck automatic lock function. If automatic lock function still does not operate, go to next step. If automatic lock function operates, the problem was the loose retaining screw on door courtesy switch.
Check door courtesy switch for each door. See DOOR COURTESY SWITCH under COMPONENT TESTS. If door courtesy switches are okay, go to next step. If any door courtesy switch is defective, replace door courtesy switch and recheck automatic lock function.
Check wiring harness and electrical connectors between each door courtesy switch and passenger's side Junction Block (J/B) Electronic Control Unit (ECU). See WIRING DIAGRAMS in REMOTE KEYLESS ENTRY SYSTEMS - RAV4 article. Passenger's side J/B ECU is located at passenger's side of instrument panel. 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 automatic lock function.
Check passenger's side J/B ECU for proper voltage and input signals. See PASSENGER'S SIDE JUNCTION BLOCK ELECTRONIC CONTROL UNIT under PIN VOLTAGE TESTS. If proper voltage and input signals exist, go to next step. If proper voltage and input signals do not exist, repair as necessary and recheck automatic lock function.
Replace passenger's side J/B ECU with a known-good passenger's side J/B ECU and recheck automatic lock function. If automatic lock function operates properly, original passenger's side J/B ECU was defective. If automatic lock function still does not operate properly, check wiring harness and electrical connectors for passenger's side J/B ECU and keyless entry system components for intermittent problem. See WIRING DIAGRAMS in REMOTE KEYLESS ENTRY SYSTEMS - RAV4 article. Repair wiring harness or electrical connector as necessary.