Rear Door Unlock Detection Switch LH Circuit

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Rear Door UNLOCK Detection Switch LH Circuit
- Rear Door UNLOCK Detection Switch LH Circuit

DESCRIPTION

The rear left door unlock detection switch is built into the rear left door lock assembly. The switch turns on when the rear left door is locked and turns off when the door is unlocked.

The main body ECU is connected to the rear left door lock assembly via terminal LSWL (w/ Smart key system) or LSR (w/o Smart key system) and rear left door lock/unlock state signals are input to the ECU.

The main body ECU applies voltage to the door unlock detection switch via terminal LSWL (w/ Smart key system) or LSR (w/o Smart key system). When the door unlock detection switch is on (there is continuity between the switch terminals), a lock state signal is input to the ECU. When the switch is off (there is no continuity between the switch terminals), an unlock state signal is input.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Start the inspection from step 1 when w/ smart key system or w/o smart key system and w/ theft deterrent system, and start from step 2 when w/o smart key system and w/o theft deterrent system.

PROCEDURE

1. READ VALUE USING TECHSTREAM (UNLOCK DETECTION SWITCH)

(a) Connect Techstream to the DLC3.

(b) Turn the ignition switch on (IG).

(c) Turn the tester on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the tester.

Main Body:





OK:

The display is as specified in the normal condition column.

NG -- INSPECT REAR DOOR LOCK ASSEMBLY (UNLOCK DETECTION SWITCH)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. INSPECT REAR DOOR LOCK ASSEMBLY (UNLOCK DETECTION SWITCH)

(a) Remove the rear door lock assembly LH.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPLACE REAR DOOR LOCK ASSEMBLY
OK -- Continue to next step.

3. CHECK WIRE HARNESS (REAR DOOR LOCK ASSEMBLY - MAIN BODY ECU)

(a) Disconnect the rear door lock assembly LH connector.





(b) Disconnect the ECU (instrument panel J/B) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL J/B)