Only Wireless Control Function is Inoperative: Procedure

1. Check the power door lock operation. Refer to OPERATION CHECK .

   OK

   Each door locks and unlocks normally.

NG → See step   11 

OK: Go to next step 

1. Check the key reminder buzzer operation. Refer to OPERATION CHECK .

   HINT: 

   If the key reminder buzzer is functioning normally, it can be assumed that the unlock warning switch is also functioning normally.

   OK

   Key reminder buzzer operates normally.

NG → See step   12 

OK: Go to next step 

1. Check whether the wireless door lock control functions operate normally with another registered transmitter.

   OK

   Wireless door lock control functions operate normally.

NG → See step   5 

OK: Go to next step 

1. Remove the battery from the inoperative wireless door control transmitter. Refer to REPLACEMENT .
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Battery positive (+) - Battery negative (-)	Always	2.5 to 3.2 V

NG → See step   10 

OK → REPLACE DOOR CONTROL TRANSMITTER 

1. Move the transmitter in the vicinity of the door control receiver.

   HINT: 

   Refer to Parts Location for the location of the door control receiver. Refer to PARTS LOCATION .

2. Press and hold either the lock or unlock transmitter switch for 1 second, and check that the doors are locked or unlocked accordingly.

   OK

   Wireless door lock control functions operate normally.

   HINT: 

   • Check if electrical noise is the cause by moving the door control transmitter closer to the door control receiver. Moving closer will decrease the effects of electrical noise.
   • If the operation check can be performed normally, there is a high probability that electrical noise or a decrease in output from the door control transmitter is the cause of the malfunction. There is a high probability that electrical noise is the cause if the problem occurs only in a certain location or only during a certain time of day. Also, custom components may be causing electrical noise. If custom components are installed in the vehicle, remove them and perform the operation check again.

NG → See step   6 

OK → FIND CAUSE OF ELECTRICAL NOISE AND REMOVE IT 

1. Disconnect the O11 receiver connector.
2. Disconnect the F9 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O11-2 (RDA) - F9-26 (RDA)	Always	Below 1 Ω
   O11-3 (PRG) - F9-25 (PRG)
   O11-2 (RDA) or F9-26 (RDA) - Body ground	Always	10 kΩ or higher
   O11-3 (PRG) or F9-25 (PRG) - Body ground

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the O11 receiver connector.
   Fig 1: Identifying O11 Receiver Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance and voltage according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O11-1 (GND) - Body ground	Always	Below 1 Ω

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   O11-5 (+B) - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Door Control Receiver)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Using an oscilloscope, check the waveform.
   Fig 2: Identifying Door Control Receiver (Output)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   MEASUREMENT CONDITION
   
   

   Item	Content
   Tester Connection	O11-2 (RDA) - Body ground
   Tool Setting	10 V/DIV., 50 μsec./DIV.
   Condition	No key in ignition key cylinder, all doors closed and transmitter switch off → on

   OK

   Waveform is output normally (refer to illustration).

NG → See step   13 

OK → See step   9