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 multiplex network body ECU. The multiplex network body ECU then controls operation of the door locks, power windows and sliding roof. The power back door ECU also causes the power back door to open or close when it receives a signal from the transmitter via the door control receiver and multiplex network body ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTION
(a) Check the wireless door lock control system Component Tests and General Diagnostics.
NG -- CHECK DOOR CONTROL TRANSMITTER (LED)
OK -- END
2. CHECK DOOR CONTROL TRANSMITTER (LED)
(a) Check that the door control transmitter's LED comes on 3 times when the switch is pressed 3 times.
OK:
The door control transmitter's LED comes on 3 times when the switch is pressed 3 times.
NG -- CHECK TRANSMITTER BATTERY
OK -- Continue to next step.
3. CHECK WIRELESS DOOR LOCK CONTROL FUNCTION (NORMAL OPERATION)
(a) Check that UNLOCK-LOCK operates in normal operation.
HINT: Standardized test procedure: Press the transmitter switch for 1 second, directing the beam to the driver's door outside handle from a distance of 1 m (3.28 ft). The transmitter should be pointed directly at the door handle, i.e. at 90° angle to the vehicle body.
NG -- REPLACE TRANSMITTER SUB-ASSEMBLY MODULE SET DOOR CONTROL
OK -- Continue to next step.
4. CHECK WIRELESS DOOR LOCK BUZZER
(a) Check if the wireless door lock buzzer sounds.
Result:
B -- GO TO FLOW CHART
A -- Continue to next step.
5. 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 to the ON position 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:
(1) Put the vehicle under the initial condition Component Tests and General Diagnostics.
(2) Insert the key into the ignition key cylinder and remove it.
(3) Within 5 seconds after the key is removed, insert the key into the ignition key cylinder again.
(4) Turn the ignition switch to the ON position and turn it back to the LOCK position.
(5) Within 30 seconds of turning the ignition switch off again, perform the following 9 times: Turn the ignition switch to the ON position and turn it back to the LOCK position.
HINT:
- Turning the ignition switch to the ON position after step 5 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 left.
NG -- CONFIRM INPUT METHOD FOR SELF-DIAGNOSTIC MODE
OK -- Continue to next step.
6. 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
A -- Continue to next step.
7. 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 WITH NORMAL ONE
OK -- END
8. CHECK TRANSMITTER BATTERY
(a) Replace the existing battery with a new or normally functioning one and check that the transmitter LED comes on 3 times when the switch is pressed 3 times.
NG -- REPLACE TRANSMITTER SUB-ASSEMBLY MODULE SET DOOR CONTROL
OK -- REPLACE TRANSMITTER BATTERY
9. CHECK RESPONSE OF DOOR CONTROL RECEIVER
(a) Press and hold down any switch on a new or normal door control transmitter for the same vehicle type and check that an unmatched recognition code is output.
OK:
Unmatched recognition code is output.
NG -- INSPECT DOOR CONTROL RECEIVER (+B TERMINAL)
OK -- REPLACE TRANSMITTER SUB-ASSEMBLY MODULE SET DOOR CONTROL
10. CONFIRM INPUT METHOD FOR SELF-DIAGNOSTIC MODE
(a) Confirm input method for self-diagnostic mode.
Result:
B -- SWITCH TO SELF-DIAGNOSTIC MODE
A -- Continue to next step.
11. READ VALUE OF TECHSTREAM (UNLOCK WARNING SWITCH)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to the ON position and turn the Techstream main switch on.
(c) Select the item below in the DATA LIST and read the display on the Techstream.
Main Body:
OK:
When the ignition key is operated, the display changes as shown above.
OK -- INSPECT DOOR CONTROL RECEIVER (+B TERMINAL)
NG -- Continue to next step.
12. INSPECT UNLOCK WARNING SWITCH
(a) Disconnect the unlock warning switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:
NG -- REPLACE UNLOCK WARNING SWITCH
OK -- Continue to next step.
13. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU TO UNLOCK WARNING SWITCH)
(a) Disconnect the multiplex network body ECU (B4) connector.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
14. INSPECT DOOR CONTROL RECEIVER (+B TERMINAL)
(a) Disconnect the door control receiver connector.
(b) Measure the voltage according to the value(s) in the table below.
Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT)
OK -- Continue to next step.
15. INSPECT DOOR CONTROL RECEIVER (E TERMINAL)
(a) Measure the resistance according to the value(s) in the table below.
Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (E CIRCUIT)
OK -- Continue to next step.
16. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU TO DOOR CONTROL RECEIVER)
(a) Disconnect the multiplex network body ECU (B6) connector.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
17. REPLACE DOOR CONTROL RECEIVER WITH NORMAL ONE
OK:
The system returns to normal operation.
NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK
OK -- REPLACE DOOR CONTROL RECEIVER