TF-20
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TROUBLE DIAGNOSIS
Trouble Diagnosis Chart by Symptom
INFOID:0000000001327440
If AWD warning lamp turns ON, perform self-diagnosis. Refer to TF-21, "CONSULT-III Function (ALL MODE AWD/4WD)".
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.
AWD Control Unit Input/Output Signal Reference ValueINFOID:0000000001327441
AWD CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-III
Symptom Condition Check item Reference page
AWD warning lamp does not turn ON when
the ignition switch is turned to ON.
(AWD warning lamp check) Ignition switch: ONCAN communication line
TF-30
Unified meter and A/C amp.
Unified meter control unit
AWD warning lamp does not turn OFF sev-
eral seconds after engine started. Engine runningCAN communication line
TF-30
Power supply and ground for AWD con-
trol unit
Unified meter and A/C amp.
Unified meter control unit
AWD solenoid
AWD actuator relay (integrated in AWD
control unit)
Wheel sensor
Heavy tight-corner braking symptom occurs
when the vehicle is driven and the steering
wheel is turned fully to either side after the
engine is started. (See NOTE.) While driving
Steering wheel is
turned fully to either
sides CAN communication line
TF-32
Accelerator pedal position signal
AWD solenoid
Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)
Vehicle does not enter AWD mode even
though AWD warning lamp turned to OFF. While drivingAWD solenoid
TF-33
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
While driving, AWD warning lamp flashes
rapidly. (When flashing in approx. 1 minute
and then turning OFF.)
Rapid flashing: 2 times/second While drivingProtection function is activated due to
heavy load to electric controlled cou-
pling. (AWD system is not malfunction-
ing. Also, optional distribution of torque
sometimes becomes rigid before lamp
flashes rapidly, but it is not malfunction.) TF-33
While driving, AWD warning lamp flashes
slowly. (When continuing to flash until turn-
ing ignition switch OFF)
Slow flashing: 1 time/2 seconds While driving
Vehicle speed: 20 km/h
(12 MPH) or more Tire size is different between front and
rear of vehicle.
TF-33
Monitored item [Unit] Content Condition Display value
FR RH SENSOR [km/h] or [mph] Wheel speed (Front wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.
Approximately equal to
the indication on speed-
ometer (Inside of
±10%)
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