ENTRY AND START SYSTEM(for Entry Function) Driver Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

If the entry lock and unlock functions do not operate for the driver door only, the request code may not be being transmitted from the driver door or the front door outside handle assembly (for driver door) (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door) [driver door electrical key antenna]), or there may be wave interference.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Note

When using the intelligent tester with the engine switch off to troubleshoot:

Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
The entry and start system (for Entry Function) uses a LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication system is functioning properly.
Before replacing the certification ECU (smart key ECU assembly), refer to the entry and start system (for Entry Function) Click here.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.

PROCEDURE

CHECK POWER DOOR LOCK OPERATION
1. When the door control switch on the power window regulator master switch assembly is operated, check that the doors unlock and lock according to switch operation Click here.
  
  OK
  
  Door locks operate normally.
NG
GO TO POWER DOOR LOCK CONTROL SYSTEM (PROCEED TO PROBLEM SYMPTOMS TABLE) Click here

OK

OK
Door locks operate normally.

CHECK WAVE ENVIRONMENT

Text in Illustration
*a	Approximately 0.3 m (0.98 ft.)

Bring the electrical key transmitter sub-assembly near the front door outside handle assembly, and perform a driver door entry lock and unlock operation check.

Note

If the key is brought within 0.2 m (0.656 ft.) of the door outside handle assembly, communication is not possible.

Tech Tips

When the electrical key transmitter sub-assembly is brought near the front door outside handle assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

OK
Entry functions operate normally.

Result
Result	Proceed to
Entry functions operate abnormally	A
Entry functions operate normally	B

AFFECTED BY WAVE INTERFERENCE

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY)

Disconnect the F63 certification ECU (smart key ECU assembly) connector.
Disconnect the H11*1 or G10*2 front door outside handle assembly (for driver side door) connector.
- *1: for LHD
- *2: for RHD

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

Standard Resistance

for LHD
Tester Connection	Condition	Specified Condition
F63-12 (CLG1) - H11-6 (ANT1)	Always	Below 1 Ω
F63-13 (CG1B) - H11-3 (ANT2)	Always	Below 1 Ω
F63-12 (CLG1) - Body ground	Always	10 kΩ or higher
F63-13 (CG1B) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
F63-12 (CLG1) - G10-6 (ANT1)	Always	Below 1 Ω
F63-13 (CG1B) - G10-3 (ANT2)	Always	Below 1 Ω
F63-12 (CLG1) - Body ground	Always	10 kΩ or higher
F63-13 (CG1B) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO DRIVER SIDE DOOR ELECTRICAL KEY ANTENNA)

Reconnect the F63 certification ECU (smart key ECU assembly) connector.

Text in Illustration
*A	for LHD
*B	for RHD
*a	Front view of wire harness connector (to Front Door Outside Handle Assembly)
*b	Waveform

Using an oscilloscope, check the waveform.

Tester Connection

Condition

Tool Setting

Specified Condition

H11-6 (ANT1) - H11-3 (ANT2)*1

G10-6 (ANT1) - G10-3 (ANT2)*2

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
Electrical key transmitter sub-assembly brought outside detection area*3
All doors locked through wireless operation

5 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform)

*1: for LHD
*2: for RHD
*3: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE DOOR)
1. Temporarily replace the front door outside handle assembly (for driver side door) with a new or known good one Click here.
NEXT
CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE DOOR) (OPERATION)
1. Check that the entry functions operate normally Click here.
  
  OK
  
  Entry functions operate normally.
OK
END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY WAS DEFECTIVE)

NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)