ENTRY AND START SYSTEM(for Entry Function) Front Passenger Side Door Entry Lock Function does not Operate

DTC Code	DTC Name
	Front Passenger Side Door Entry Lock Function does not Operate

DESCRIPTION

If the entry lock function does not operate for the front passenger side door only, but the entry unlock function operates, the request code is being transmitted properly from the front passenger side door. In this case, there may be a problem related to the front door outside handle assembly RH (lock sensor) (connection between the certification ECU and front door outside handle assembly RH [lock sensor]).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Note:

The entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the 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 systems are functioning properly.
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.
Check that there are no electrical key transmitters in the vehicle.
Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output (Click here).
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.
Before replacing the certification ECU, refer to the entry and start system (for Entry Function) (Click here).
After repair, confirm DTC not reoccur with performing the "DTC Output Confirmation Operation".

PROCEDURE

CHECK POWER DOOR LOCK OPERATION

When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation
Click here

OK

Door locks operate normally.

Result


Result
OK
NG

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

Click here

OK

READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)

Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Turn the intelligent tester on.
Enter the following menus: Body / Main Body / Data List.

Read the Data List according to the display on the intelligent tester.

Body Electrical > Main Body > Data List


Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FL Door Lock Pos	Front RH side door lock position switch signal	UNLOCK or LOCK	UNLOCK: Front RH side door unlocked LOCK: Front RH side door locked	-

OK

On the intelligent tester screen, the display changes between LOCK and UNLOCK as shown in the chart above.

Result


Result
OK
NG

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Front Passenger Door Lock/Unlock Functions do not Operate)

Click here

OK

READ VALUE USING INTELLIGENT TESTER (LOCK SENSOR)

Using the intelligent tester, read the Data List

Click here

Body Electrical > Entry&Start > Data List


Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
P-Door Trigger Switch	Front door outside handle assembly RH (lock sensor)	ON or OFF	ON: Front door outside handle assembly RH (lock sensor) touched OFF: Front door outside handle assembly RH (lock sensor) not touched	Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

OK

The intelligent tester display changes correctly in response to the operation of the front door outside handle assembly RH.

Result


Result
OK
NG

OK

REPLACE CERTIFICATION ECU

NG

CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE RH - CERTIFICATION ECU)

Disconnect the N1 front door outside handle assembly RH connector.
Disconnect the G26 certification ECU connector.

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

Standard Resistance


Tester Connection	Condition	Specified Condition
N1-1 (TRG+) - G26-19 (TSW2)	Always	Below 1 Ω
G26-15 (E) - Body ground	Always	Below 1 Ω
N1-1 (TRG+) or G26-19 (TSW2) - Body ground	Always	10 kΩ or higher

Result


Result
OK
NG

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH (FRONT PASSENGER SIDE LOCK SENSOR SIGNAL INPUT)

Connect the N1 front door outside handle assembly RH connector.

Connect the G26 certification ECU connector.

*1	Waveform	-	-
*a	Component with harness connected (Certification ECU)	*b	In actuality, sampling is being performed

Using an oscilloscope, check the waveform.

OK


Tester Connection	Switch Condition	Tool Setting	Specified Condition
G26-19 (TSW2) - G26-15 (E)	Procedure: Engine switch off Key brought outside vehicle All doors closed Front passenger side door lock sensor not touched → touched	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform)

Result


Result
OK
NG

OK

REPLACE CERTIFICATION ECU

NG

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH