Inspection Procedure

1. Check the wireless door lock control functions (see OPERATION CHECK ).

OK: Each function of wireless door lock control system operates normally using transmitter switches. 

NG: Go to step 2 

OK: END 

1. 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: Go to step  4

A: Go to next step 

1. Temporarily replace the transmitter battery with a new or normally functioning one (see TRANSMITTER BATTERY (W/ SMART KEY SYSTEM) ).
2. Check that the doors can be locked and unlocked using the transmitter switches.

OK: Doors can be locked and unlocked with transmitter. 

NG: Go to step 4 

OK: END (TRANSMITTER BATTERY IS DEFECTIVE) 

1. 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  (See CERTIFICATION ECU (W/ SMART KEY SYSTEM) )

Fig 1: Wireless Door Lock Buzzer Output Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

Fig 2: Wireless Door Lock Buzzer Output Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. 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: 

B: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

C: Go to step  7

A: Go to next step 

1. 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: Go to step  12

OK: END 

1. Temporarily replace the door control receiver with a new or normally functioning one (see REMOVAL ).
2. Held down the door control transmitter's switch.
3. Check that an unmatching recognition code is output.

OK: Unmatching recognition code is output. 

NG: Go to step 8 

OK: REPLACE DOOR CONTROL TRANSMITTER 

1. Measure the voltage of the connector.

Standard voltage 

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 3: Identifying Door Control Receiver Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Disconnect the E84 ECU connector.
2. Disconnect the L24 receiver connector.
3. Measure the resistance of the wire harness side connectors.

Standard resistance 

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 4: Identifying Certification ECU And Door Control Receiver Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Disconnect the E16 and E84 ECU connectors.
2. Measure the resistance of the wire harness side connectors.

Standard resistance 

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 5: Identifying Main Body ECU And Certification ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Temporarily replace the door lock control receiver with a new or normally functioning one (see REMOVAL ).
2. 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: Go to step 12 

OK: END (DOOR CONTROL RECEIVER IS DEFECTIVE) 

1. Temporarily replace the ECU aggregation box (certification ECU) with a new one.
2. 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)