Door Unlock Sensor Check
NOTE:
Door unlock sensor is integral with door lock actuator.
- Check Door Unlock Sensor Input Signal
Turn ignition off. Using DVOM, measure voltage (backprobe) between ground and terminals No. 36 (Yellow/Green wire), No. 37 (Yellow/Blue wire) or No. 26 (Yellow/Red wire) at Smart Entrance Control Unit (SECU) harness connector. See Fig 1 . Ensure voltage is as specified. See DOOR UNLOCK SENSOR VOLTAGE SPECIFICATIONS table. If voltage is as specified, door unlock sensor is okay. If voltage is not as specified, go to next step.DOOR UNLOCK SENSOR VOLTAGE SPECIFICATIONSApplication (Terminal No. ) & Condition Specification LF Door (36) Locked 5 Volts Unlocked Zero Volts RF Door (37) Locked 5 Volts Unlocked Zero Volts All Other Doors (26) Locked 5 Volts Unlocked Zero Volts - Check Door Unlock Sensor
Disconnect door unlock sensor harness connectors. Using DVOM, check for continuity between door unlock sensor terminals. See Fig 2 . Continuity should be present only when sensor is in UNLOCKED position. If continuity is not as specified, replace door unlock sensor. If continuity is as specified, check for open or short circuit between appropriate door unlock sensor and SECU. Check door unlock sensor ground circuit. Repair as necessary.