Diagnosis System [09/2020 - ]

Four wheel drive control system data can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. Therefore when there seems to be a problem with the four wheel drive control system, use the Techstream or SST to check and troubleshoot it.

1. Inspect the battery voltage.

   Standard Voltage

   11 to 14 V

   If the voltage is below 11 V, recharge the battery before proceeding.

2. Check the DLC3.

   Refer to GENERAL INFORMATION [09/2014 - ]

1. If a malfunction occurs during system operation, "Check AWD System" will be displayed on the multi-information display to inform the driver of the system malfunction.

   HINT: 

   Check that the master warning light comes on for approximately 4 seconds.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Turn the engine switch on (IG), and check that the master warning light comes on for approximately 3 seconds.

   HINT: 

   The master warning light goes off while the system is in DTC output mode.

1. If the following malfunctions occur, the 4WD ECU assembly will stop or partially change the AWD control system function.

   Malfunction	Control
   Malfunction in a speed sensor	System function is stopped
   Malfunction in the steering sensor and throttle signal line	System function is partially changed