Driver Side Door Entry Unlock Function Does Not Operate
DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Driver Side Door Entry Unlock Function does not Operate
- Driver Side Door Entry Unlock Function does not Operate
DESCRIPTION
If the driver door entry unlock function does not operate but the entry lock operation operates, the communication line between the vehicle and electrical key transmitter is normal. Either of the following may have occurred: 1) the door outside handle touch sensor is malfunctioning; or 2) the front door ECU LH receives the door outside handle touch sensor ON signal, but is unable to send the signal to the certification ECU through CAN communication.
WIRING DIAGRAM
Refer to Driver Side Door Entry Unlock Function does not Operate Driver Side Door Entry Lock and Unlock Functions Do Not Operate.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK POWER DOOR LOCK OPERATION
(a) When the master switch assembly's door control switch is operated, check that the locked doors unlock.
NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM
(a) Using the Techstream, read the Data List.
OK:
On the screen, item changes between ON and OFF according to above chart.
NG -- CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR LH)
OK -- Continue to next step.
3. CHECK FRONT DOOR ECU LH (OPERATION)
(a) Replace the front door ECU LH with a new one or normally functioning one Components.
(b) Check that the entry function operates normally.
OK:
Operates normally
NG -- REPLACE CERTIFICATION ECU
OK -- END (FRONT DOOR ECU LH IS DEFECTIVE)
4. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR LH)
(a) Disconnect the N10 ECU connector.
(b) Disconnect the b1 oscillator connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE LH)
(a) Disconnect the b1 oscillator connector.
(b) Disconnect the b2 handle connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)
(a) Replace the door electrical key oscillator with a new one or normally functioning one Components.
(b) Check that the entry function operates normally.
OK:
Operates normally
NG -- CHECK FRONT DOOR OUTSIDE HANDLE LH (OPERATION)
OK -- END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
7. CHECK FRONT DOOR OUTSIDE HANDLE LH (OPERATION)
(a) Replace the front door outside handle LH with a new one or normally functioning one Components.
(b) Check that the entry function operates normally.
OK:
Operates normally
NG -- CHECK FRONT DOOR ECU LH (OPERATION)
OK -- END (FRONT DOOR OUTSIDE HANDLE LH IS DEFECTIVE)
8. CHECK FRONT DOOR ECU LH (OPERATION)
(a) Replace the front door ECU LH with a new one or normally functioning one Components.
(b) Check that the entry function operates normally.
OK:
Operates normally
NG -- REPLACE CERTIFICATION ECU
OK -- END (FRONT DOOR ECU LH IS DEFECTIVE)
9. GO TO POWER DOOR LOCK CONTROL SYSTEM Power Door Lock Control System
10. REPAIR OR REPLACE HARNESS OR CONNECTOR
11. END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
12. END (FRONT DOOR OUTSIDE HANDLE LH IS DEFECTIVE)
13. END (FRONT DOOR ECU LH IS DEFECTIVE)
14. REPLACE CERTIFICATION ECU