Only Wireless Control Function Is Inoperative
DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: Only Wireless Control Function is Inoperative
- Only Wireless Control Function is Inoperative
DESCRIPTION
The door control receiver receives signals from the transmitter and sends these signals to the main body ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS
OK:
Each function of wireless door lock control system operates normally using transmitter switches Wireless Door Lock Control System.
NG -- REPLACE TRANSMITTER BATTERY
OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
2. REPLACE TRANSMITTER BATTERY
(a) After replacing the transmitter battery, check that the doors can be locked and unlocked using the transmitter switches Replacement.
OK:
Doors can be locked and unlocked with transmitter.
NG -- SWITCH TO SELF DIAGNOSTIC MODE
OK -- END (TRANSMITTER BATTERY DEFECTIVE)
3. SWITCH TO SELF DIAGNOSTIC MODE
(a) Switch to self-diagnostic mode by operating the ignition key cylinder.
(1) Make sure the vehicle is in its initial condition. Then insert the key into the ignition key cylinder and remove it.
(2) Within 5 seconds of removing the key, insert the key into the ignition key cylinder (ignition switch OFF). Then turn the ignition switch ON and OFF.
(3) Within 30 seconds of turning the ignition switch OFF, perform the following operation 9 times: turn the ignition switch ON and OFF.
NOTICE:
If the system cannot enter self-diagnostic mode, the system returns to normal mode.
HINT
* Turning the ignition switch ON after the above operations have been completed ends self-diagnostic mode.
* Do not lock or unlock doors during self-diagnostic mode.
(b) Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer sound.
OK:
Buzzer pattern is same as illustration on left.
NG -- PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS BUZZER)
OK -- Continue to next step.
4. CHECK BY SELF DIAGNOSTIC MODE
(a) Check the diagnostic outputs when the door control transmitter switch is held down. The diagnostic outputs can be checked by the wireless door lock buzzer sound.
Result:
B -- END (TRANSMITTER BATTERY DEFECTIVE)
C -- CHECK RESPONSE OF DOOR CONTROL RECEIVER
A -- Continue to next step.
5. REGISTER RECOGNITION CODE
(a) Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered.
OK:
Recognition code can be registered.
NG -- REPLACE DOOR CONTROL TRANSMITTER MODULE
OK -- END
6. CHECK RESPONSE OF DOOR CONTROL RECEIVER
(a) When a new or normally functioning door lock control transmitter switch for the same vehicle type is held down, check that an unmatching recognition code is output.
OK:
Unmatching recognition code is output.
NG -- REPLACE DOOR CONTROL RECEIVER
OK -- REPLACE DOOR CONTROL TRANSMITTER MODULE Removal
7. REPLACE DOOR CONTROL RECEIVER
(a) After replacing the door control receiver, check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.
OK:
Doors can be locked and unlocked with transmitter.
NG -- REPLACE DOOR CONTROL TRANSMITTER MODULE Removal
OK -- END (DOOR CONTROL RECEIVER IS DEFECTIVE)
8. PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS BUZZER)
(a) Connect a Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the tester ON.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) According to the display on tester, perform the "Active Test".
Main body:
OK:
Wireless buzzer turns ON/OFF.
NG -- INSPECT WIRELESS DOOR LOCK BUZZER
OK -- Continue to next step.
9. INSPECT UNLOCK WARNING SWITCH ASSEMBLY
(a) Remove the unlock warning switch.
(b) Measure the resistance.
Standard resistance:
NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY Removal
OK -- Continue to next step.
10. CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - MAIN BODY ECU)
(a) Disconnect the E7 main body ECU connector.
(b) Disconnect the E23 door control receiver connector.
(c) Measure the resistance.
Standard resistance:
(d) Reconnect the main body ECU connector.
(e) Reconnect the door control receiver connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
11. CHECK DOOR CONTROL RECEIVER (OUTPUT)
(a) Measure the voltage of the connector.
Standard voltage:
NG -- REPLACE DOOR CONTROL TRANSMITTER MODULE
OK -- REPLACE MAIN BODY ECU
12. REPLACE DOOR CONTROL TRANSMITTER MODULE
(a) Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.
OK:
Doors can be locked and unlocked with transmitter.
NG -- REPLACE DOOR CONTROL RECEIVER
OK -- END (DOOR CONTROL TRANSMITTER MODULE DEFECTIVE)
13. INSPECT WIRELESS DOOR LOCK BUZZER
(a) Disconnect the A12 wireless door lock buzzer connector.
(b) Measure the resistance.
Standard resistance:
(c) Reconnect wireless door lock buzzer connector.
NG -- REPLACE WIRELESS DOOR LOCK BUZZER Removal
OK -- Continue to next step.
14. CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MAIN BODY ECU)
(a) Disconnect the A12 wireless door lock buzzer connector.
(b) Disconnect the 1B main body ECU connector.
(c) Measure the resistance.
Standard resistance:
(d) Reconnect the A12 wireless door lock buzzer connector.
(e) Reconnect the 1B main body ECU connector.
NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY Removal
OK -- REPLACE MAIN BODY ECU