Last Modified: 4-30-2014 6.6 G Doc ID: RM000001DOH001X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: DOOR LOCK: DOOR CONTROL RECEIVER: ON-VEHICLE INSPECTION; 2006 MY LX470 [05/2005 -        ]

ON-VEHICLE INSPECTION

1. INSPECT WIRELESS DOOR LOCK DIAGNOSIS MODE

(a) Start the diagnosis mode.

HINT:

This mode is to check the condition of the signal transmission and reception among the transmitter, the receiver and ECU. If all transmitters for a vehicle do not respond, there is a possibility that the receiver or the wire harness is faulty.

(1) Insert the key into the ignition key cylinder.

(2) Remove the key from the ignition key cylinder.

(3) Insert the key into the ignition key cylinder.

(4) Turn the ignition switch ON within 5 seconds.

(5) Repeat turning the ignition switch OFF to ON 9 times within 30 seconds.

(6) Enter the diagnosis mode, and make sure that the taillight lights up.

(b) Finish the Diagnosis Mode.

(1) During the Diagnosis mode, turn the ignition switch from OFF to ON to go back to the normal mode. At this time make sure that the taillight lights up.

(c) Diagnosis Mode Check.

(1) Check how the taillight lights up when pressing each transmitter switch.

  1. LOCK switch
  2. UNLOCK switch
  3. Luggage door switch
  4. Disagreement of recognition code or rolling code

    HINT:

    If this is detected in the Diagnosis Check, conduct the recognition code registration.

  5. No response from the buzzer

    HINT:

    Conduct the following checks.

    • Check the door control transmitter module.
    • Check the door control receiver.

2. INSPECT DOOR CONTROL RECEIVER

(a) Disconnect the connector from the receiver.

(b) Check the continuity of the wire harness side connector.

OK:

Tester Connection

Specified Condition

1 (E) - Body ground

Continuity

If the result is not as specified, repair or replace the harness and connector.

(c) Measure the voltage of the wire harness side connector.

Standard voltage:

Tester Connection

Specified Condition

5 (+B) - Body ground

4.6 to 5.4 V

If the result is not as specified, repair or replace the harness and connector.

(d) Reconnect the receiver connector.

(e) Measure the voltage of the connector.

Standard voltage:

Tester Connection

Condition

Specified Condition

2 (RDA) - Body ground

Ignition switch OFF, all doors closed and transmitter switch not pressed

11 to 14 V

Ignition switch OFF, all doors closed and transmitter switch pressed

Pulse generation

If the result is not as specified, replace the receiver.