AWD Warning Remains ON [10/2022 - ]: Procedure

1. Using the GTS, check for Vehicle Control History.

   Refer to VEHICLE CONTROL HISTORY (RoB) [10/2022 - ] 

   Chassis > Four Wheel Drive > Utility 

   Tester Display
   Vehicle Control History (RoB)

   HINT: 

   If vehicle control history is stored when the dynamic torque control AWD system are suspended, the warning message is displayed.

   Result

   Result	Proceed to
   There is no vehicle control history for when the dynamic torque control AWD system were suspended.	A
   There is vehicle control history for when the dynamic torque control AWD system were suspended.	B

Result: 

B 

PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY 

Refer to VEHICLE CONTROL HISTORY (RoB) [10/2022 - ] 

Result: 

A 

See step  2

1. Check that there is no looseness at the locking and connecting parts of the 4WD ECU assembly connector.
2. Disconnect the H14 and H15 4WD ECU assembly connectors.
3. Check the connector case and the terminal for deformation and corrosion.

   OK

   No deformation or corrosion

4. Connect the H14 and H15 4WD ECU assembly connectors.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CONNECT CONNECTOR TO ECU CORRECTLY 

Result: 

OK 

See step  3

1. Turn the ignition switch off.
2. Disconnect the H14 4WD ECU assembly connector.
3. Turn the ignition switch to ON.
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   H14-24 (IG1) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Turn the ignition switch off.
2. Disconnect the H14 4WD ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H14-1 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. According to the display on the GTS, read the Data List.

   Chassis > Four Wheel Drive > Data List 

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

   Chassis > Four Wheel Drive > Data List 

   Tester Display
   4WD Warning Light

2. Check the GTS display condition of the AWD warning light.

   Result

   Result	Proceed to
   Display of the Data List remains OFF	A
   Display of the Data List remains ON	B

Result: 

A 

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

Result: 

B 

REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [10/2022 - ]