All Door Entry Lock/Unlock Functions Do Not Operate, But Wireless Functions Operate

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate
- All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate

DESCRIPTION

When the wireless door lock and unlock functions operate, the communication circuit between the door lock receiver assembly and certification ECU (smart key ECU assembly) is normal. When the entry lock and unlock functions do not operate, radio wave interference, a customized entry cancel function, or a communication error between the key and vehicle in the smart communication circuit, is suspected.

INSPECTION PROCEDURE

NOTICE:
* The smart key system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How To Proceed With Troubleshooting. Troubleshoot the smart key system (for entry function) after confirming that the communication system is functioning properly.
* Confirm that another key is not in the cabin.

PROCEDURE

1. CHECK POWER DOOR LOCK OPERATION

(a) When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to switch operation Operation Check.

OK:

Door locks operate normally.

NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Problem Symptoms Table
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (ENTRY CANCEL FUNCTION)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Smart Key (Certification ECU (Smart Key ECU Assembly))





Result:





B -- PERFORM CANCELLATION OF ENTRY KEY CANCEL FUNCTION Smart Key System (for Entry Function)
A -- Continue to next step.

3. CHECK WAVE ENVIRONMENT

(a) Move the key as described below and perform the operation inspection.

HINT
* When the key is brought near the door outside handle assembly or outside electrical key oscillator, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
* The transmitting waves of the wireless functions and entry functions are the same, but the wave logic is different. Therefore, it is possible that only the wireless functions or only the entry functions are affected by wave interference.

(b) Bring the key near the driver door outside handle assembly, and perform a front driver door entry lock and unlock operation check.





Text in Illustration





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

(c) Bring the key near the front passenger door outside handle assembly, and perform a front passenger door entry lock and unlock operation check.





Text in Illustration





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

(d) Bring the key near the outside electrical key oscillator (for rear side), and perform an entry back door open function check.





Text in Illustration





NOTICE:
If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication is not possible.

HINT
If the inspection result indicates that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

Result:





C -- GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table) Problem Symptoms Table

B -- AFFECTED BY WAVE INTERFERENCE
A -- Continue to next step.

4. PERFORM KEY DIAGNOSTIC MODE INSPECTION

(a) Diagnostic mode inspection (door electrical key oscillator (for driver side))





Text in Illustration





(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Key / Key Communication Check / Overhead + Driver Side.

(5) When the key is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

(b) Diagnostic mode inspection (door electrical key oscillator (for front passenger side))





Text in Illustration





(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Key / Key Communication Check / Overhead + Passenger Side.

(5) When the key is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

(c) Diagnostic mode inspection (indoor electrical key oscillator (for front floor))





Text in Illustration





(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Key / Key Communication Check / Overhead + Front Room.

(5) When the key is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

(d) Diagnostic mode inspection (indoor electrical key oscillator (for center floor))





Text in Illustration





(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Key / Key Communication Check / Overhead + Rear Room.

(5) When the key is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

(e) Diagnostic mode inspection (indoor electrical key oscillator (for rear floor))





Text in Illustration





(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Key / Key Communication Check / Overhead + Back Door (inside).

(5) When the key is held at the same height as the rear bumper upper surface and aligned with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds.

(f) Diagnostic mode inspection (outside electrical key oscillator (for rear side))





Text in Illustration





(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Key / Key Communication Check / Overhead + Back Door (outside).

(5) When the key is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

Result:





E -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

D -- GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table) Problem Symptoms Table

C -- GO TO OTHER PROBLEM (Proceed to Room Oscillator does not Recognize Key) Testing and Inspection

B -- GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table for Each Door) Problem Symptoms Table
A -- Continue to next step.

5. CHECK ELECTRICAL KEY TRANSMITTER

(a) Check if another registered key is available.

Result:





B -- CHECK ELECTRICAL KEY TRANSMITTER (OPERATION)
A -- Continue to next step.

6. REGISTER ELECTRICAL KEY TRANSMITTER

(a) Register a new key Engine Immobiliser System (w/ Smart Key System).

NEXT -- Continue to next step.

7. CHECK ELECTRICAL KEY TRANSMITTER (OPERATION)

(a) Using the key registered in the previous step or another registered key, check that the entry function operates normally Operation Check.

OK:

Entry function operates normally.

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

OK -- REPLACE ELECTRICAL KEY TRANSMITTER (REPLACE MALFUNCTIONING KEY)