AWD Warning does not Come ON [08/2020 - ]: Procedure

1. Check that there is no looseness at the locking and connecting parts of the 4WD ECU assembly connector.

   OK

   No looseness at the locking and connecting parts

2. Disconnect the G131 4WD ECU assembly connector.
3. Check the connector case and the terminal for deformation and corrosion.

   OK

   No deformation or corrosion

4. Connect the G131 4WD ECU assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. According to the display on the Techstream, read the Data List.

   Chassis > Four Wheel Drive > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   4WD Warning Light	AWD warning (multi-information display)	Warning ON/OFF	Observe combination meter assembly

   Chassis > Four Wheel Drive > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   4WD Warning Light	AWD warning (multi-information display)	OFF or ON	OFF: Warning off ON: Warning on	-

   Chassis > Four Wheel Drive > Active Test 

   Active Test Display
   4WD Warning Light

   Data List Display
   4WD Warning Light

   Result

   Result	Proceed to
   Data List display does not switch ON/OFF	A
   Data List display switches ON/OFF	B

Result: 

A 

REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

B 

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]