Inspection Procedure

1. NG: Go to step 2 
2. OK: NORMAL 

1. After replacing the transmitter battery with a new or functioning one, check that the doors can be locked and unlocked by using the transmitter LOCK/UNLOCK switch.

1. NG: Go to step 3 
2. OK: END 

1. Check standard LOCK/UNLOCK switch operation.
   NOTE: Standardized test procedure: press the transmitter switch for 1 second, directing the beam to driver side 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. 

1. NG: Go to step 4 
2. OK: REPLACE DOOR CONTROL TRANSMITTER 

1. Check that the wireless door lock buzzer sounds (see ON-VEHICLE INSPECTION ).

   OK: Wireless door lock buzzer sounds. 

1. NG: Go to step   18 
2. OK: Go to next step 

1. Switch to self-diagnostic mode on the hand-held tester.
   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch ON and push the hand-held tester main switch ON.
   3. Please refer to the hand-held tester operator's manual for further details.
2. Switch to self-diagnostic mode by operating the ignition key cylinder.
   1. Put the vehicle under the vehicle's initial condition (see ON-VEHICLE INSPECTION ), insert the key into the ignition key cylinder and remove it.
   2. Within 5 seconds of removing the key (step 1), insert the key into the ignition key cylinder (ignition key OFF). Then turn the ignition switch to ON and return it to OFF.
   3. Within 30 seconds returning the ignition switch OFF again (step 2), perform the following 9 times: Turn the ignition switch to ON and return it to OFF.
   NOTE: If the change to self-diagnostic mode has failed, the system will return to normal mode. 

   HINT:

   • Turning the ignition switch ON after step  b-(3) has been completed will end self-diagnostic mode.
   • Do not lock or unlock doors during self-diagnostic mode.
3. Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer sound. Compare the buzzer sound to the illustration on the left.

   OK: 

   The buzzer sound should be the same as that shown in  Fig 1  . 

   Fig 1: Buzzer Timing Chart Waveform Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: Go to step   10 
2. OK: Go to next step 

1. Inspect the diagnosis outputs when the door control transmitter switch is held down. The diagnosis outputs can be checked by listening to the wireless door lock buzzer.
   Fig 2: Identifying Buzzer Wave Output

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result: 

   BUZZER OUTPUT RESULT
   
   

   Result	Proceed to
   Normal waves (buzzer sound patterns) for LOCK, UNLOCK, TRUNK OPEN or PANIC switches are output.	A
   Unmatching recognition code is output and buzzer is ON.	B
   No diagnosis outputs are present and buzzer is OFF.	C

1. B: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) 
2. C: Go to step   8 
3. A: Go to next step 

1. Check that the system can switch to rewrite mode or add mode and a recognition code can be registered.

   OK: Recognition code can be registered. 

1. NG: Go to step   9 
2. OK: NORMAL 

1. Prepare a new or functioning door control transmitter switch from the same vehicle model. Press and hold a switch on the transmitter and check that an unmatching recognition code is output.

   OK: Unmatching recognition code is output. 

1. NG: Go to step   14 
2. OK: REPLACE DOOR CONTROL TRANSMITTER 

1. After replacing the door control receiver, check that the doors can be locked and unlocked by using the transmitter LOCK/UNLOCK switch.

   OK: Doors can be locked and unlocked with transmitter. 

1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) 
2. OK: END 

Result: 

1. B: Go to step   5 
2. A: Go to next step 

1. Remove the switch.
2. Measure the resistance of the switch.

   Standard: 

   CONNECTOR SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   1 - 2	Not pushed	10 kΩ or higher
   1 - 2	Pushed	Below 1 Ω

   Fig 3: Measuring Resistance Of Unlock Warning Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPLACE UNLOCK WARNING SWITCH ASSY 
2. OK: Go to next step 

1. Disconnect the U1 switch connector.
   Fig 4: Disconnecting U1 Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the B6 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard: 

   CONNECTOR SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   U1-2 - B6-21 (KSW)	Below 1 Ω
   U1-1 - Body ground	Below 1 Ω

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: Go to next step 

1. Disconnect the D4 receiver connector.
   Fig 5: Disconnecting D4 Receiver Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage and resistance of the wire harness side connector.

   Standard: 

   CONNECTOR SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   D4-5 (+B) - Body ground	10 to 14 V
   D4-1 (E) - Body ground	Below 1 Ω

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: Go to next step 

1. Measure the voltage of the connector.
   Fig 6: Measuring Voltage Of Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   Fig 7: Door Control Reciver (Output) Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: Go to step   9 
2. OK: Go to next step 

1. Disconnect the D4 receiver connector.
   Fig 8: Disconnecting D4 Receiver Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the B8 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard: 

   CONNECTOR SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   D4-2 (RDA) - B8-12 (RDA)	Below 1 Ω
   D4-2 (RDA) - Body ground	10 kΩ or higher
   B8-12 (RDA) - Body ground	10 kΩ or higher

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: Go to next step 

Result: 

1. B: Go to step   18 
2. C: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) 
3. A: Go to next step 

1. Check that the hazard warning lamps blink when the hazard warning signal switch is pressed.

   OK: Hazard warning lamps blink. 

1. NG: Go to LIGHTING SYSTEM (See  LIGHTING SYSTEM - DIAGNOSTICS  ) 
2. OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) 

1. Measure the resistance between terminals 1 and 2 of the buzzer.
   Fig 9: Measuring Resistance Between Terminals 1 & 2

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: Approximately 1 kΩ 

   NOTE:

   • The buzzer circuit is built into the multiplex network body ECU, not into the buzzer itself. 
   • When battery voltage is directly applied to the buzzer, the buzzer does not sound. 

1. NG: REPLACE WIRELESS DOOR LOCK BUZZER 
2. OK: Go to next step 

1. Disconnect the K1 buzzer connector.
   Fig 10: Disconnecting K1 Buzzer Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the B9 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard: 

   CONNECTOR SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   K1-1 - B9-2 (BZR)	Below 1 Ω
   K1-2 - Body ground	Below 1 Ω

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU)