It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms, and
understand them fully. Ask customer about his/her complaints carefully. In some cases, it will be necessary to
check symptoms by driving vehicle with customer.

CAUTION:

Customers are not professional. It is dangerous to make an easy guess like “maybe the customer
means that...,” or “maybe the customer mentions this symptom”.

>> GO TO 2.

CHECK AWD WARNING LAMP STATUS

Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
Is AWD warning lamp illuminated?

YES

>> GO TO 3.

>> GO TO 6.

PERFORM THE SELF-DIAGNOSIS

With CONSULT-III

Perform self-diagnosis of AWD control unit.

Perform malfunction detected by self-diagnosis.

Erase AWD control unit self-diagnosis results.

>> GO TO 4.

CHECK TERMINALS AND HARNESS CONNECTORS

Check pin terminals for damage or loose connection with harness connector.

>> GO TO 5.

RECHECK THE SYMPTOM

With CONSULT-III

Perform DTC confirmation procedure.

Is any malfunction detected by self-diagnosis?

YES

>> GO TO 2.

>> GO TO 6.

DIAGNOSIS CHART BY SYMPTOM

Perform diagnosis by symptom.
Is any malfunction present?

YES

>> GO TO 2.

>> GO TO 7.

FINAL CHECK

With CONSULT-III

Check AWD control unit input/output standard values.

Are AWD control unit input/output values within standard ranges respectively?

YES

>> INSPECTION END

>> GO TO 2.

DLN-8

< FUNCTION DIAGNOSIS >

[TRANSFER: ETX13B]

AWD SYSTEM

FUNCTION DIAGNOSIS

AWD SYSTEM

System Diagram

INFOID:0000000000957226

CONTROL DIAGRAM

CROSS-SECTIONAL VIEW

SDIA3134E

AWD SYSTEM

DLN-9

< FUNCTION DIAGNOSIS >

[TRANSFER: ETX13B]

DLN

System Description

INFOID:0000000000957227

DESCRIPTION

• Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.
• Makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.
• On roads which do not require AWD, it contributes to improved fuel economy by driving in conditions close to

rear-wheel drive.

• Sensor inputs determine the vehicle's turning condition, and in response tight cornering/braking are con-

trolled by distributing optimum torque to front wheels.

• It transmits/receives each signal from the following control unit via CAN communication line.

NOTE:
• When driving, if there is a large difference between front and rear wheel speed which continues for a long

time, fluid temperature of drive system parts becomes too high and AWD warning lamp blinks quickly. (When
AWD warning lamp blinks, vehicle changes to rear-wheel drive conditions.) Also, optional distribution of
torque sometimes becomes rigid before lamp blinks quickly, but it is not malfunction.

• If AWD warning lamp is blinking quickly, stop vehicle and allow it to idle for some time. Blinking will stop and

AWD system will be restored.

Electromagnet

Control clutch

Cam

Drive chain

Front case

Front drive shaft

AWD solenoid connector

Main clutch

Rear case

JSDIA0048ZZ

Component parts

Function

ABS actuator and electric unit (control unit)

Transmits the following signals via CAN communication to AWD control unit.
• Vehicle speed signal
• Stop lamp switch signal (brake signal)

ECM

Transmits the following signals via CAN communication to AWD control unit.
• Accelerator pedal position signal
• Engine speed signal

Unified meter and A/C amp.

Transmits conditions of parking brake switch via CAN communication to AWD control
unit.

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