INSPECTION PROCEDURE
4: 4WD system check screen is displayed on the centre of the multi-information display and a
"4WD" symbol flashes at the left top. But no diagnosis codes are set.
COMMENTS ON TROUBLE SYMPTOM
When a 4WD system check screen is displayed on the centre of the multi-information
display and a "4WD" symbol flashes at the left top without setting any diagnosis codes,
the power supply to the AWC-ECU may be defective.
When the power supply voltage to the AWC-ECU drops under approx. 6 V, the ECU cannot
set any diagnosis codes due to the poor power supply. In this case, the combination
meter will determine that the AWC-ECU is timed out, and then display "4WD system check" at the centre
of the multi-information display and make "4WD" symbol flash at the left top.
PROBABLE CAUSES
Damaged wiring harness and connectors
Malfunction of AWC-ECU
DIAGNOSIS PROCEDURE
1.Check the Inspection Procedure 5: Malfunction of power supply circuit system. (Refer
to )
)