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 a signal from the transmitter and sends this signal to the body ECU. Then, the body ECU controls operation of the door locks except the back door lock in response to this signal, while the body ECU sends a signal to the back door ECU at the same time. Receiving this signal, the back door ECU controls operation of the back door lock. Also, the back door ECU causes the back window to open, receiving a signal from the transmitter via the body ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS
(a) Check the wireless door lock control system Operation Check.
OK -- END
NG -- Continue to next step.
2. CHECK TRANSMITTER BATTERY
(a) After replacing the transmitter battery with a new or normal one and then operating the transmitter LOCK/UNLOCK in the standard operation, check that the doors can lock and unlock even after operating it more than 3 times.
NOTE: Standard operation, herein, means operation by pressing the transmission switch for 1 second, directing the transmitter to the vehicle in a location that is 100 cm (39.37 in.) away from the driver side door outside handle in the right direction.
NG -- CHECK RESPONSE OF DOOR CONTROL RECEIVER
OK -- REPLACE TRANSMITTER BATTERY
3. CHECK WIRELESS DOOR LOCK BUZZER
(a) Check if the wireless door lock buzzer sounds.
Result:
A -- Continue to next step.
4. SWITCH TO SELF DIAGNOSTIC MODE
(a) Switch to self-diagnostic mode using the Techstream.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch ON and turn the Techstream main switch on.
HINT: Refer to the Techstream operator's manual for further details.
(b) Switch to self-diagnostic mode by performing the following (Manual operation):
(1) Put the vehicle under the initial condition Operation Check. (Procedure "A")
(2) Insert the key into the ignition key cylinder and remove it. (Procedure "B")
(3) Within 5 seconds after the key is removed, insert the key into the ignition key cylinder again. (Procedure "C")
(4) Turn the ignition switch ON and turn it back OFF. (Procedure "D")
(5) Within 30 seconds of turning the ignition switch OFF again, perform the following 9 times: Turn the ignition switch ON and turn it back to OFF. (Procedure "E")
HINT:
- Turning the ignition switch to the ON position after Procedure "E" has been completed will end the self-diagnostic mode.
- Do not lock or unlock doors during the self-diagnostic mode.
NOTE: If the self-diagnostic mode cannot be achieved, the system will return to normal mode.
(c) Check that the system has switched to self-diagnostic mode by checking the sound of the wireless door lock buzzer.
OK:
The sound pattern of the wireless door lock buzzer should be the same as the patterns shown in the timing chart on the illustration.
NG -- CONFIRM SELF DIAGNOSTIC MODE
OK -- Continue to next step.
5. 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 sound of the wireless door lock buzzer.
Result:
C -- CHECK RESPONSE OF DOOR CONTROL RECEIVER
B -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
A -- Continue to next step.
6. REGISTER RECOGNITION CODE
(a) Check that the system can switch to the rewrite mode or add mode and whether a recognition code can be registered.
OK:
The system can switch to the rewrite mode or add mode, and a recognition code can be registered.
NG -- REPLACE DOOR CONTROL RECEIVER
OK -- END
7. CHECK RESPONSE OF DOOR CONTROL RECEIVER
(a) When a new or normal door control transmitter switch for the same type vehicle is held down, check that a diagnosis of unmatching recognition code is output.
OK:
Unmatched recognition code is output.
NG -- INSPECT DOOR CONTROL RECEIVER (POWER SOURCE)
OK -- REPLACE DOOR CONTROL TRANSMITTER
8. REPLACE DOOR CONTROL RECEIVER
(a) Replace door control receiver with normal one.
NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK -- REPLACE DOOR CONTROL RECEIVER
9. CONFIRM SELF DIAGNOSTIC MODE
(a) Confirm input method for self-diagnostic mode.
Result:
B -- SWITCH TO SELF DIAGNOSTIC MODE
A -- Continue to next step.
10. INSPECT UNLOCK WARNING SWITCH
(a) Disconnect the unlock warning switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE UNLOCK WARNING SWITCH
OK -- Continue to next step.
11. CHECK HARNESS AND CONNECTOR (BODY ECU - UN-LOCK WARNING SWITCH)
(a) Disconnect the body ECU (B6) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
12. INSPECT DOOR CONTROL RECEIVER (POWER SOURCE)
(a) Disconnect the D7 door control receiver connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
13. INSPECT DOOR CONTROL RECEIVER (E TERMINAL)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
14. INSPECT DOOR CONTROL RECEIVER
(a) Reconnect D7 receiver connector, and check the voltage according to the value(s) in the table below.
Standard voltage:
NOTE: Check the output voltage with the bar graph display.
OK -- REPLACE DOOR CONTROL RECEIVER
NG -- Continue to next step.
15. CHECK HARNESS AND CONNECTOR (BODY ECU - DOOR CONTROL RECEIVER)
(a) Disconnect the receiver (D7) connector and body ECU (B5) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
16. REPLACE DOOR CONTROL RECEIVER
(a) Replace the door control receiver with normal one.
OK:
The system returns to normal operation.
NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK -- REPLACE DOOR CONTROL RECEIVER