Wireless Door Lock Control System: Inspection

HINT:

Refer to "REPLACEMENT ".

1. Using a screwdriver, remove the cover.
2. Remove the battery (lithium battery).
3. Install a new or normal battery (lithium battery).

   HINT:

   When a new or normal battery can not be obtained, connect 2 new 1.5 V batteries in series, connect the battery (+) to the battery receptacle side terminal and battery (-) to the bottom terminal, then apply 3 V voltage to the transmitter.

4. In the location where is approx. 1 M away from driver's outside handle in the right direction, and check the transmitter operation when pressing transmission switch on the surface of the transmitter body.

   Standard: 

   Remote control of vehicle door lock can be operated. 

   HINT:

   • The minimum operation distance differs according to operator, the way of holding, and location.
   • As weak wave is used, operation distance might be shortened when noise is detected in strong wave or used frequency.
5. Install the battery (lithium battery).
6. Install a cover, so that rubber cover is not distorted or slipped off.
   Fig 1: Inspecting Wireless Door Lock Transmitter Operation

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• Make sure to use the TOYOTA electrical tester.
• With the battery unloaded, judge can not be made whether the battery is available or not on the test.
• When the transmitter is faulty, the energy amount left in the battery might not be checked correctly.
• On the lithium battery used for the transmitter, the voltage more than 2.5 V with the battery unloaded is shown on the tester until the energy is completely consumed.

Accordingly when inspecting the energy amount left in the battery, it is necessary to measure the voltage when the battery is loaded. (1.2 kΩ).

1. Using a screwdriver, remove the cover.
   Fig 2: Removing Cover Of Transmitter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the battery (lithium battery) from the transmitter.
   Fig 3: Removing Battery From Transmitter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the lead to the (-) terminal of the transmitter and install the battery.
   Fig 4: Connecting Lead To The Terminal Of Transmitter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Connect the (+) tester to the (+) battery (lithium battery), and (-) tester to the lead respectively.
Fig 5: Checking Transmitter Battery Voltage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Press one of the transmitting switches on the transmitter for approx. 1 second.
6. Press the transmitting switch on the transmitter again to check the voltage.

   Standard: 2.1 V or more 

   HINT:

   • When the temperature of the battery is low, the judge can not be made correctly.

     When the outcome of the test is less than 2.1 V, conduct the test again after leaving the battery in the place at 18 °C for more than 30 minutes.

     By auto power off function, the voltage becomes no load voltage (more than 2.5 V) condition after 20 seconds from the switch was pressed.

     Make sure to read the voltage before of it.

   • High voltage might be shown 1 to 2 times after leaving the battery, judge should be made with the voltage shown at the 3rd time or later.
7. Disconnect the lead.
8. Set the battery (lithium battery) in the transmitter.
9. Install the cover, so that the rubber cover is not distorted or slipped off.

1. Disconnect the connector from the receiver and inspect the connector on the wire harness side, as shown below.
   Fig 6: Wireless Door Lock Control Receiver Circuit Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WIRELESS DOOR LOCK CONTROL RECEIVER CONTINUITY
   
   

   Tester connection	Condition	Specified condition
   1 - Ground	Constant	Continuity
   5 - Ground	Constant	Battery positive voltage

   If the circuit is not as specified, inspect the circuit connected to other parts.

2. Connect the wire harness side connector to the receiver and inspect the wire harness side connector from the back side, as shown below.
   Fig 7: Connecting Wire Harness Side Connector To Receiver

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If circuit is as specified, replace the receiver.

If the circuit is not as specified, inspect the circuit connected to other parts.