WIRELESS DOOR LOCK CONTROL SYSTEM No Answer-Back

DESCRIPTION

In some cases, wireless door lock control functions are normal but the hazard warning lights function do not operate. In such cases, the main body ECU's hazard warning lights signal output may be malfunctioning.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

   
   

   1. Check whether the wireless door lock functions by operating the transmitter switch Click here.

      Tech Tips

      When the wireless door LOCK/UNLOCK operation can be performed, it means that the wireless signal from the transmitter is properly input to the main body ECU RH (cowl side junction block RH).

      Result

      Result	Proceed to
      Answer-back functions do not operate	A
      Wireless door lock function do not operate	B

   
   

   B

   GO TO ENTRY AND START SYSTEM Click here

   A

2. READ VALUE USING INTELLIGENT TESTER

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the intelligent tester on.

   4. Enter the following menus: Body / Body or Master Switch / Data List.

   5. Read the Data List according to the display on the intelligent tester.

      Body (Main Body ECU RH (Cowl Side Junction Block RH))

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Passenger 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	-
      Rear Lock Position SW	Rear door lock position switch signal/ON or OFF	ON: Rear door is unlocked OFF: Rear door is locked	-

      Master Switch (Multiplex Network Master Switch Assembly)

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Lock Pos SW	Driver side door unlock detection switch signal/ON or OFF	ON: Driver side door is unlocked OFF: Driver side door is locked	-

      OK
      On the intelligent tester screen, ON or OFF will be displayed accordingly.

      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)

   
   

   B

   GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Click here

   C

   GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Click here

   D

   GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Click here

   E

   GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Click here

   A

3. CHECK HAZARD WARNING LIGHTS

   
   

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

      OK
      Hazard warning lights flash continuously.

   
   

   NG

   GO TO LIGHTING SYSTEM Click here

   OK

4. CHECK HARNESS AND CONNECTOR (TURN SIGNAL FLASHER - MAIN BODY ECU RH)

   
   

   1. 

      Disconnect the J30 turn signal flasher connector and J74 Main Body ECU RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition J30-8 (HAZ) - J74-2 (HAZ) Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)