Driver Side Door Entry Unlock Function Does Not Operate

DOOR LOCK: SMART KEY SYSTEM: Driver Side Door Entry Unlock Function does not Operate

Driver Side Door Entry Unlock Function does not Operate

DESCRIPTION

When an ID code from the door electrical key oscillator LH matches an ID code from the key, the certification ECU outputs a SEL1 signal (Lo when output) to the door electrical key oscillator LH, activates the touch sensor inside the outside door handle, and enters unlock standby condition. When the touch sensor is touched, the electrical key oscillator LH sends a SENS signal (Lo when output) to the certification ECU and the certification ECU sends an unlock signal to the driver door 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. CHECK DOOR ELECTRICAL KEY OSCILLATOR LH (SEL VOLTAGE)




(a) Measure the voltage between the terminals of the connector when the key is operated.
Standard voltage:






NG -- CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - CERTIFICATION ECU)
OK -- Continue to next step.

3. CHECK DOOR ELECTRICAL KEY OSCILLATOR LH (SENS VOLTAGE)




(a) Measure the voltage between the terminals of the connector when the outside door handle is touched.
Standard voltage:






OK -- CHECK OPERATION OF DOOR ELECTRICAL KEY OSCILLATOR LH
NG -- Continue to next step.

4. CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - CERTIFICATION ECU)




(a) Disconnect the D16 oscillator connector.
(b) Disconnect the S11 ECU 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.

5. CHECK OPERATION OF DOOR ELECTRICAL KEY OSCILLATOR LH
(a) After replacing the door electrical key oscillator on the driver's side with a new one, check that the entry unlock function operates normally.
OK:
Entry unlock function operates normally.
OK -- REPLACE DOOR ELECTRICAL KEY OSCILLATOR LH
NG -- Continue to next step.

6. CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - ELECTRICAL KEY ANTENNA)




(a) Disconnect the D16 oscillator connector.
(b) Disconnect the E8 antenna connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE ELECTRICAL KEY ANTENNA LH
7. CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - CERTIFICATION ECU)




(a) Disconnect the D16 oscillator connector.
(b) Disconnect the S11 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE CERTIFICATION ECU