Rear Door RH Entry Unlock Function does not Operate

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

Rear Door RH Entry Unlock Function does not Operate

DESCRIPTION

When an ID code from the door electrical key oscillator rear RH matches an ID code from the key, the multiplex network door ECU rear RH (rear door RH ECU) outputs a SEL signal (Lo when output) to the door electrical key oscillator rear RH, 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 RH sends a SENS signal (Lo when output)) to the multiplex network door ECU rear RH (rear door RH ECU) and the multiplex network door ECU rear RH (rear door RH ECU) sends an unlock signal to the rear door RH 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 LIGHT SWITCH)
(a) Check the DATA LIST for proper functioning of the rear RH side door courtesy light switches.

Multiplex Network Body ECU





OK:
ON (door courtesy light 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 RH:





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 (PASSENGER 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 (PR SELECT SIG is on) appears on the screen.
NG -- REPLACE CERTIFICATION ECU ASSEMBLY
OK -- Continue to next step.
5. READ VALUE USING TECHSTREAM (PR TOUCH SENSOR)
(a) With ''Pr-Seat Select'' ON, check the DATA LIST for proper functioning of the touch sensor.

Certification ECU:





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





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






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





(a) Disconnect the r2 oscillator connector.
(b) Disconnect the r1 antenna connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






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





(a) Disconnect the U33 ECU connector.
(b) Disconnect the r2 oscillator connector.
(c) Measure the resistance of the wire harness connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE ELECTRICAL KEY OSCILLATOR REAR RH