AWD ECU

Components and Component Location

Component location

1. 4WD ECU

Description and Operation

Description

The 4WD ECU processes signals from various sensors and determines current driving and road conditions. The ECU then uses this information to precisely control the multi-plate 4WD clutch and smoothly regulate the torque delivered to the rear wheels.

Flow Diagram

Power Flow Diagram

4WD ECU Input/Output Diagram

Circuit Diagrams

Circuit diagram

AWD Control Module Connector

4WD ECU Terminal Function

Pin	Function
1	CAN Communication Line (BAS)
2	CAN Communication Line (HIGH)
3	-
4	Pressure Sensor Signal (+)
5	-
6	4WD Lock Switch
7	Hydraulic Motor Oil (+)
8	Hydraulic Motor Oil (+)
9	-
10	-
11	Pressure Sensor Power
12	Pressure Sensor Signal (-)
13	BATTERY POWER
14	Ground
15	Ignition/START Power
16	-
17	-
18	-

4WD ECU Circuit Diagram

Repair Procedures

REPLACEMENT

1. 1
   Before replacing the 4WD ECU, check the clutch learning value of the 4WD ECU using GDS. (Refer to 4WD Control System - "Adjustment".)
2. 2
   Disconnect the negative (-) battery cable from the battery.
3. 3
   Remove the luggage compartment side trim. (Refer to Body - Luggage Compartment Side Trim)
4. 4
   Disconnect the AWD ECU connector (A).
5. 5
   Loosen the nuts and remove the 4WD ECU (B).

   Tightening torque: 9.8 ~ 11.8 N·m

   

REMEDY

1. 1
   To install, perform the removal procedure in reverse order.
2. 2
   Before installing a new ECU, download the clutch learning value from the original ECU to the replacement ECU using GDS. (Refer to 4WD Control System - "Adjustment".)