Only Wireless Control Function is Inoperative

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key 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 via the certification ECU using the serial line. The main body ECU then controls all doors by sending lock / unlock signals to each door, and sends hazard flasher relay signals to the FLSH relay.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRELESS DOOR LOCK FUNCTION
(a) Check the wireless door lock control functions Wireless Door Lock Control System (w/ Smart Key System).
OK:
Each function of wireless door lock control system operates normally using transmitter switches.
NG -- CHECK TRANSMITTER LED ILLUMINATION
OK -- END
2. CHECK TRANSMITTER LED ILLUMINATION
(a) Check that the transmitter's LED illuminates 3 times when the switch is pressed 3 times.
OK:
Transmitter's LED illuminates 3 times when switch is pressed 3 times.

Result





B -- SWITCH TO SELF-DIAGNOSTIC MODE
A -- Continue to next step.

3. REPLACE TRANSMITTER BATTERY
(a) Temporarily replace the transmitter battery with a new or normally functioning one Transmitter Battery (w/ Smart Key System).
(b) Check that the doors can be locked and unlocked using the transmitter switches.
OK:
Doors can be locked and unlocked with transmitter.
NG -- SWITCH TO SELF-DIAGNOSTIC MODE
OK -- END (TRANSMITTER BATTERY IS DEFECTIVE)
4. SWITCH TO SELF-DIAGNOSTIC MODE




(a) Switch to self-diagnostic mode.
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG) and turn the Techstream main switch ON.
HINT: Refer to the Techstream operator's manual for further details.

(3) Check that the system has switched to self-diagnostic mode by checking wireless door lock buzzer sound pattern.
OK:
Sound pattern is same as illustration.
NG -- REPLACE ECU AGGREGATION BOX
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 flash patterns of the room light.

Result:





C -- CHECK DOOR CONTROL RECEIVER (RESPONSE)
B -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)
A -- Continue to next step.

6. 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:
System can switch to rewrite mode or Add mode and that recognition code can be registered.
NG -- CHECK ECU AGGREGATION BOX (OPERATION)
OK -- END
7. CHECK DOOR CONTROL RECEIVER (RESPONSE)
(a) Temporarily replace the door control receiver with a new or normally functioning one Removal.
(b) Held down the door control transmitter's switch.
(c) Check that an unmatching recognition code is output.
OK:
Unmatching recognition code is output.
NG -- CHECK DOOR CONTROL RECEIVER (OUTPUT)
OK -- REPLACE DOOR CONTROL TRANSMITTER
8. CHECK DOOR CONTROL RECEIVER (OUTPUT)




(a) Measure the voltage of the connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

9. CHECK WIRE HARNESS (CERTIFICATION ECU -DOOR CONTROL RECEIVER)




(a) Disconnect the E84 ECU connector.
(b) Disconnect the L24 receiver connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

10. CHECK WIRE HARNESS (MAIN BODY ECU - CERTIFICATION ECU)




(a) Disconnect the E16 and E84 ECU connectors.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

11. CHECK DOOR CONTROL RECEIVER
(a) Temporarily replace the door lock control receiver with a new or normally functioning one Removal.
(b) 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 -- CHECK ECU AGGREGATION BOX (OPERATION)
OK -- END (DOOR CONTROL RECEIVER IS DEFECTIVE)
12. CHECK ECU AGGREGATION BOX (OPERATION)
(a) Temporarily replace the ECU aggregation box (certification ECU) with a new one.
(b) 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 INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)
OK -- END (CERTIFICATION ECU IS DEFECTIVE)