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Keyless Access Lock/Unlock Cannot Be Performed From Any Of The Doors

CAUTION:
  • Check that there are no other registered access keys inside the vehicle.
  • Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.
  • Check that the keyless access function is not stopped.
  • When the access key or Keyless Access Control Module is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
Step Check Yes No
1 CHECK OPERATION OF KEYLESS DOOR LOCK. 
Using the keyless function of the access key, check the operation of the door lock.
Does it lock/unlock normally? Check the exterior antenna, oscillator, touch sensor, lock/unlock buttons. Go to step .
2 CHECK ACCESS KEY. 
Check for whether lock and unlock is possible with the registered access key.
Is there any access key which can lock/unlock when the touch sensor is operated? Check the access key that does not operate. Go to step . Go to step .
3 CHECK ACCESS KEY. 
Measure the battery voltage of the access key that does not operate.
Is the voltage 2.5 - 3.2 V? Replace the access key. Replace the battery.
4 CHECK DOOR LOCK. 
Operate the driver's center door lock switch.
Does the door lock operate? Go to step . Check the door lock control system. <Ref. to INSPECTION , Door Lock Control System.>
5 CHECK HARNESS (OPEN CIRCUIT). 
  1. Disconnect the receiver connector (R296).
  2. Using a tester, measure the resistance between receiver and chassis ground.

Connector & terminal 
(R296) No. 1 - Chassis ground: 
Is the resistance less than 10 Ω? Go to step . Repair or replace the open circuit of harness.
6 CHECK HARNESS (OPEN CIRCUIT). 
  1. Disconnect the Keyless Access Control Module connector.
  2. Using a tester, measure the resistance between receiver and Keyless Access Control Module.

Connector & terminal 
(R296) No. 4 - (B573) No. 5: 
(R296) No. 5 - (B573) No. 17: 
(R296) No. 2 - (B573) No. 19: 
Is the resistance less than 10 Ω? Go to step . Repair or replace the open circuit of harness.
7 CHECK RECEIVER. 
Replace with a receiver that is operating normally. <Ref. to REMOVAL , Receiver.>
When the front unlock sensor and the rear gate opener button/trunk opener button are operated, does it lock/unlock? Malfunction occurred in receiver. Go to step .
8 CHECK HARNESS. 
Using a tester, measure the voltage between the Keyless Access Control Module connector and chassis ground.
Connector & terminal 
(B572) No. 2 (+) - Chassis ground (-): 
Is the voltage 10 V or more when the ignition switch is turned to ON? Go to step . Check the Keyless Access Control Module power supply circuit.
9 CHECK HARNESS (OPEN CIRCUIT). 
Using a tester, measure the resistance between the Keyless Access Control Module connector and chassis ground.
Connector & terminal 
(B572) No. 11 - Chassis ground: 
Is the resistance less than 10 Ω? Replace the Keyless Access Control Module. <Ref. to REMOVAL , Keyless Access Control Module.> Repair or replace the open circuit of harness.