Rear Door LH Entry Unlock Function does not Operate

DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Rear Door LH Entry Unlock Function does not Operate

Rear Door LH Entry Unlock Function does not Operate

DESCRIPTION

When an ID code from the door electrical key oscillator rear LH matches an ID code from the key, the certification ECU outputs a SEL signal (Lo when output) to the door electrical key oscillator rear LH, activates the touch sensor inside the outside door handle, and enters unlock standby mode. When the touch sensor is touched, the door electrical key oscillator rear LH sends a SENS signal (Lo when output) to the certification ECU and the certification ECU sends an unlock signal to the rear door LH lock.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MANUAL DOOR UNLOCK OPERATION
(a) Check that the manual door unlock function operates normally.
OK:
Manual door unlock function operates normally.
NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM (DOOR COURTESY SWITCH)
(a) Check the DATA LIST for proper functioning of the rear LH side door courtesy switches.

Main Body ECU RH:





OK:
ON (door courtesy switch is pushed) appears on the screen.
NG -- GO TO LIGHTING SYSTEM
OK -- Continue to next step.
3. READ VALUE USING TECHSTREAM (LOCK POSITION SWITCH)
(a) Check the DATA LIST for proper functioning of the door lock position switch.

Multiplex Network Door ECU Rear LH:





OK:
ON (door is unlocked) appears on the screen.
NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM
OK -- Continue to next step.
4. PERFORM ACTIVE TEST USING TECHSTREAM (DRIVER SIDE REAR SELECT)
(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the oscillator operates.

Certification ECU:





OK:
ON (Dr-Seat Select is on) appears on the screen.
NG -- REPLACE CERTIFICATION ECU
OK -- Continue to next step.
5. READ VALUE USING TECHSTREAM (DRIVER SIDE REAR TOUCH SENSOR)
(a) With ''Dr-Seat Select'' ON, check the DATA LIST for proper functioning of the touch sensor.

Certification ECU:





OK:
When driver side rear door touch sensor is touched, ON (Sensor is touched) appears on the screen.
NG -- CHECK DOOR ELECTRICAL KEY OSCILLATOR REAR LH
OK -- Continue to next step.
6. CHECK OPERATION OF MULTIPLEX NETWORK DOOR ECU REAR LH
(a) After replacing the multiplex network door ECU rear LH with a normal one, check that the entry unlock function operates normally.
OK:
Entry unlock function operates normally.
NG -- REPLACE CERTIFICATION ECU
OK -- END (MULTIPLEX NETWORK DOOR ECU REAR LH IS DEFECTIVE)
7. CHECK DOOR ELECTRICAL KEY OSCILLATOR REAR LH





(a) Measure the voltage of the oscillator connector.
Standard voltage:






OK -- REPLACE CERTIFICATION ECU
NG -- Continue to next step.
8. CHECK WIRE HARNESS (OSCILLATOR - ANTENNA)





(a) Disconnect the s2 oscillator connector.
(b) Disconnect the s1 antenna connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. CHECK WIRE HARNESS (ECU - OSCILLATOR)





(a) Disconnect the U33 ECU connector.
(b) Disconnect the s2 oscillator connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE DOOR ELECTRICAL KEY OSCILLATOR REAR LH