FOUR WHEEL DRIVE CONTROL SYSTEM DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM
1. Inspect the battery voltage.
  
  If the voltage is below 11 V, recharge the battery before proceeding.
  
  Check the DLC3 Click here.
  FUNCTION OF AWD WARNING
  1. If a malfunction occurs during system operation, "AWD System check" will be displayed on the multi-information display to inform the driver of the system malfunction.
    
    Tech Tips
    
    The master warning light turns on at the same time.
  CHECK MASTER WARNING LIGHT
  1. Turn the engine switch on (IG), and check that the master warning light comes on for approximately 3 seconds.
    
    Tech Tips
    
    The master warning light goes off while the system is in the DTC output mode.
  CHECK AWD WARNING
  Text in Illustration
  
  *a Front view of DLC3

Text in Illustration
*a	Front view of DLC3

Using SST, connect terminals TC and CG of the DLC3 (to be in the DTC output mode).

SST: 09843-18040

Turn the engine switch on (IG).

"DIAG AWD" is displayed on the multi-information display, and the 4WD ECU assembly checks the system for malfunctions.

If the 4WD control system is normal, "DIAG AWD FF" will be displayed on the multi-information display.
If the 4WD control system is not normal, "DIAG AWD XX(DTC)" will be displayed on the multi-information display.
Although the Test Mode is not set for the 4WD control system, a message will be displayed on the multi-information display when the Test Mode is activated for checking the VSC, etc.

Tech Tips

Test Mode DTCs will not be stored because the Test Mode is not set.
On the multi-information display, AWD, VGRS and ARS are displayed in order.
If the systems above are not displayed on the multi-information display, there may be a malfunction in "TC and CG Terminal Circuit" Click here.

If the AWD warning check result is not normal, proceed to troubleshooting for the AWD warning light circuit.

Trouble Area	See procedure
AWD warning (Remains on)	Click here
AWD warning (Does not come on)	Click here

FAIL-SAFE FUNCTION

If the following malfunctions occur, the 4WD ECU assembly will stop the function of the 4WD control system or partly change the function to control the system.

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