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Home >> Lexus >> 2010 >> RX 350 AWD V6-3.5L (2GR-FE) >> Repair and Diagnosis >> Transmission and Drivetrain >> Transfer Case >> Testing and Inspection >> Component Tests and General Diagnostics >> Active Torque Control 4WD System >> AWD Control Switch Circuit >> From 08/2009
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From 08/2009





MF1A TRANSFER / 4WD / AWD: ACTIVE TORQUE CONTROL 4WD SYSTEM: AWD Control Switch Circuit
- AWD Control Switch Circuit

DESCRIPTION

An AWD Lock Switch (4 Wheel Drive Control Switch) has been provided.

This enables the driver to select between the AUTO and LOCK modes by operating the switch.

The system optimally controls the torque distribution to the front and rear wheels in the respective modes.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT 4 WHEEL DRIVE CONTROL SWITCH

(a) Disconnect the connector of 4 wheel drive control switch Removal.

(b) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





NG -- REPLACE 4 WHEEL DRIVE CONTROL SWITCH Removal
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (4WD ECU - BODY GROUND)

(a) Connect the connector of 4 wheel drive control switch.

(b) Disconnect the ECU connector.





(c) Measure the resistance of the wire harness side connector.

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE 4WD ECU ASSEMBLY
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