Wireless Door Lock Control System (For Built-In Type Door Control Receiver) Only Wireless Control Function Is Inoperative

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK POWER DOOR LOCK OPERATION

CHECK DOOR CONTROL TRANSMITTER ASSEMBLY

CHECK DOOR CONTROL TRANSMITTER ASSEMBLY (LED)

INSPECT TRANSMITTER BATTERY (VOLTAGE)

CHECK FOR ELECTRICAL NOISE

INSPECT UNLOCK WARNING SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - THEFT WARNING ECU AND BODY GROUND)

CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU - DRIVER SIDE JUNCTION BLOCK)

CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU - BATTERY AND BODY GROUND)

REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

When replacing the theft warning ECU assembly or door control transmitter sub-assembly, refer to the registration procedures (HILUX_TGN26 RM000000Z4Z01KX.html).

1. Check the power door lock operation (HILUX_TGN26 RM000004PRU00DX.html).
   

   OK:

   Each door locks and unlocks normally.
   

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

   OK:

   Wireless door lock control functions operate normally.
   

1. Press and hold the lock switch of the door control transmitter assembly for 5 seconds and check the number of times that the transmitter LED illuminates.
   

   Result

   Result	Proceed to
   Transmitter LED does not illuminate when switch is pressed and held	A
   Transmitter LED illuminates 3 times or more when switch is pressed and held	B
   Transmitter LED illuminates once or twice but not third time	C

1. Remove the transmitter battery from the door control transmitter assembly that does not operate (HILUX_TGN26 RM000003ZV300OX.html).
   

2. Attach a lead wire (0.6mm [0.0236 in.] in diameter or less including wire sheath) with tape or equivalent to the negative battery.
   

   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.

3. Carefully extend the lead wire out from the position shown in the illustration and install the preciously removed transmitter battery.
   

   NOTICE:

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

4. Measure the voltage according to the value(s) in the table below.
   

   HINT:

   1. Measure the transmitter battery voltage while pressing the lock or unlock switch on the transmitter.
      
   2. Perform the measurement when the door control transmitter assembly is at room temperature.
      

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   Battery positive (+) - Battery negative (-)	Ignition switch off, all doors closed and lock or unlock switch pushed	2.2 to 3.2 V

1. Move the door control transmitter assembly in the vicinity of the theft warning ECU assembly.
   

   HINT:

   Refer to Parts Location for the location of the theft warning ECU assembly (HILUX_TGN26 RM000004GCZ007X.html).

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

   OK:

   Wireless door lock control functions operate normally.
   

   HINT:

   1. Check if electrical noise is the cause by moving the door control transmitter assembly closer to the theft warning ECU assembly. Moving it closer will decrease the effects of electrical noise.
      
   2. If the operation check can be performed normally, there is a high probability the electrical noise or decrease in output from the door control transmitter assembly 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.
      

1. Remove the unlock warning switch assembly (HILUX_TGN26 RM000002ZQ601UX.html).
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   1 - 2	Not pushed	10 kΩ or higher
   	Pushed	Below 1 Ω

   Text in Illustration

   *a	Pushed
   *b	Not pushed

1. Disconnect the G10 unlock warning switch assembly connector.
   

2. Disconnect the G29 theft warning ECU assembly connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   G10-1 - G29-5 (KSW)	Always	Below 1 Ω
   G10-1 or G29-5 (KSW) - Body ground	Always	10 kΩ or higher
   G10-2 - Body ground	Always	Below 1 Ω

1. Disconnect the G29 theft warning ECU assembly connector.
   

2. Disconnect the 2A and 2D driver side junction block assembly connectors.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   G29-25 (L2) - 2A-4 (L1)	Always	Below 1 Ω
   G29-26 (UL3) - 2D-4 (UL1)	Always	Below 1 Ω
   G29-25 (L2) or 2A-4 (L1) - Body ground	Always	10 kΩ or higher
   G29-26 (UL3) or 2D-4 (UL1) - Body ground	Always	10 kΩ or higher

1. Disconnect the G29 theft warning ECU assembly connector.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   G29-1 (E) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   G29-4 (+B1) - Body ground	Always	11 to 14 V
   G29-14 (+B2) - Body ground	Always

1. Temporarily replace the driver side junction block assembly with a new or normally functioning one.
   

2. Check that the wireless door lock control functions (HILUX_TGN26 RM000004PTL004X.html).
   

   OK:

   Wireless door lock control functions operate normally.