DESCRIPTION
If the front passenger side door entry lock function does not operate but the entry unlock function operates, the communication between the vehicle and electrical key transmitter sub-assembly is normal. The malfunctioning part may be the lock sensor circuit (from certification ECU (smart key ECU assembly) to the front door outside handle assembly (for front passenger side electrical key antenna)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
When using the GTS with the engine switch off to troubleshoot:
Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the GTS 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
When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to switch operation Click here.
OK |
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Door locks operate normally. |
NG |
GO TO POWER DOOR LOCK CONTROL SYSTEM (PROCEED TO PROBLEM SYMPTOMS TABLE) Click here |
OK |
READ VALUE USING GTS (P-DOOR TRIGGER SWITCH)
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Entry & Start / Data List.
Read the Data List according to the display on the GTS.
Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
---|---|---|---|
P-Door Trigger Switch | Front door outside handle assembly (for front passenger side) (unlock sensor) / OFF or ON | OFF: Front door outside handle assembly (for passenger side) (unlock sensor) not touched ON: Front door outside handle assembly (for passenger side) (unlock sensor) touched |
|
OK |
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On the GTS screen, the display changes between ON and OFF as shown in the table above. |
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY)
Disconnect the D41 and D48 certification ECU (smart key ECU assembly) connectors.
Disconnect the F5*1 or E1*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 | ||||||||||||
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NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR PASSENGER SIDE DOOR)
Reconnect the D41 and D48 certification ECU (smart key ECU assembly) connectors.
Reconnect the F5*1 or E1*2 front door outside handle assembly connector.
*1: for LHD
*2: for RHD
Using an oscilloscope, check the waveform.
*a | Component with harness connected (Certification ECU (smart key ECU assembly)) |
*b | Waveform |
*c | Passenger side door lock sensor touched | - | - |
OK | ||||||||
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|
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG |
REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR PASSENGER SIDE DOOR) Click here |