Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT DOOR CONTROL TRANSMITTER MODULE SET SUB-ASSEMBLY

(a) Inspect operation of the door control transmitter module set sub-assembly.

(1) Remove the transmitter battery from the door control transmitter module set sub-assembly.

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(2) Install a new or non-depleted transmitter battery.

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NOTICE:

When replacing the transmitter battery, before starting work, remove static electricity that has built up in the body by touching, for example, the vehicle to prevent the door control transmitter module set sub-assembly from being damaged.

HINT:

When a new or non-depleted transmitter battery is not available, first connect 2 new 1.5 V batteries in series. Then connect leads to the batteries and apply 3 V to the door control transmitter module set sub-assembly, as shown in the illustration.

(3) From outside the vehicle, approximately 1 m (3.28 ft) from the driver door outside door handle, test the door control transmitter module set sub-assembly by pointing its key plate at the vehicle and pressing a door control transmitter module set sub-assembly switch.

OK:

The door lock can be operated via the door control transmitter module set sub-assembly.

  • The operational area differs depending on the user, the way the door control transmitter module set sub-assembly is held and the location.
  • The weak radio waves of the door control transmitter module set sub-assembly may be affected if the area has strong radio waves or electrical noise. The door control transmitter module set sub-assembly operation area may be shortened or the door control transmitter module set sub-assembly may not function.

(b) Inspect the transmitter battery capacity.

(1) Remove the transmitter battery from the door control transmitter module set sub-assembly that does not operate. Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal.

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NOTICE:

Do not wrap the lead wire around a terminal, wedge it between the terminals, or solder it. A terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly.

(2) Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.

NOTICE:

When replacing the transmitter battery, before starting work, remove static electricity that has built up in the body by touching, for example, the vehicle to prevent the door control transmitter module set sub-assembly from being damaged.

(3) Check the transmitter battery voltage.

HINT:

Measure the transmitter battery voltage while pressing the lock or unlock switch on the door control transmitter module set sub-assembly.

Standard Voltage:

Tester Connection

Condition

Specified Condition

Transmitter battery positive (+) - Transmitter battery negative (-)

Ignition switch off, all doors closed and lock or unlock switch pressed

2.5 to 3.2 V

If the result is not as specified, replace the transmitter battery.

    Components

    Installation

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