Wireless Door Lock Control System (W/O Smart Key System) No Answer-Back

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH)

CHECK WIRELESS DOOR LOCK CONTROL FUNCTION

CHECK HAZARD WARNING LIGHT

PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS DOOR LOCK BUZZER)

CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MAIN BODY ECU AND BODY GROUND)

REPLACE WIRELESS DOOR LOCK BUZZER

CHECK WIRELESS DOOR LOCK BUZZER OPERATION

DESCRIPTION

NOTICE:

Troubleshooting should be started after confirming that the customize status of the answer-back function has been switched ON.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Connect the Techstream to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the Techstream on.
   

4. Enter the following menus: Body Electrical / Main Body / Data List.
   

5. Read the Data List according to the display on the Techstream.
   
   

   Main Body

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D-Door Lock Pos SW	Driver door lock position switch signal/LOCK or UNLOCK	ON: Driver side door is unlocked OFF: Driver side door is locked	-
   P-Door Lock Pos SW	Front passenger side door lock position switch signal/ON or OFF	ON: Front passenger side door is unlocked OFF: Front passenger side door is locked	-
   RR-Door Lock Pos SW	Rear right side door lock position switch signal/ON or OFF	ON: Rear right side door unlocked OFF: Rear right side door locked	-
   RL-Door Lock Pos SW	Rear left side door lock position switch signal/ON or OFF	ON: Rear left side door unlocked OFF: Rear left side door locked	-

   OK:

   On the Techstream screen, the display changes between ON and OFF as shown in the chart above.
   

   
   

   Result:

   
   

   Result	Proceed to
   OK	A
   NG (for Driver Side)	B (Refer to "Driver Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)
   NG (for Front Passenger Side)	C (Refer to "Front Passenger Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)
   NG (for Rear LH Side)	D (Refer to "Rear Door LH LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)
   NG (for Rear RH Side)	E (Refer to "Rear Door RH LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)

1. Check the wireless door lock control functions by operating the transmitter switch.
   
   

   Result:

   
   

   Result	Proceed to
   Wireless door lock functions are normal but hazard warning lights answer-back does not occur	A
   Wireless door lock functions are normal but wireless door lock buzzer answer-back does not occur	B
   Doors cannot be locked and unlocked using transmitter	C

1. Check that the hazard warning lights flash continuously when the hazard warning signal switch is pressed.
   

   OK:

   Hazard warning lights flash continuously.
   

1. Enter Active Test, using the Techstream to generate a control command, and then check that the wireless buzzer operates normally.
   
   

   Main Body

   Tester Display	Test Part	Control Range	Diagnostic Note
   Wireless Buzzer	Wireless Door Lock Buzzer	ON/OFF	-

   OK:

   Wireless buzzer turns ON/OFF.
   

1. Disconnect the E61 main body ECU connector.
   

2. Disconnect the A42 wireless door lock buzzer connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E61-15 (BZR) - A42-1	Always	Below 1 Ω
   E61-15 (BZR) - Body ground	Always	10 kΩ or higher
   A42-2 - Body ground	Always	Below 1 Ω

1. Temporarily replace the wireless door lock buzzer with a new one (COROLLA_ZRE142 RM000002XKW023X.html).
   

1. Check the operation of the wireless answer-back function.
   

   OK:

   Wireless answer-back function operates normally.