Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT ELECTROMAGNETIC COUPLING (4WD LINEAR SOLENOID)

Remove the coupling connector.

Measure the resistance of the solenoid.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
1 (BSF) - 2 (SLC)	2.2 to 2.6 Ω
1 (BSF) - Body ground	10 kΩ or higher
2 (SLC) - Body ground	10 kΩ or higher

Fig 1: Identifying Electromagnetic Coupling Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE ELECTROMAGNETIC COUPLING

OK: Go to next step

CHECK WIRE HARNESS (COUPLING - 4WD CONTROL ECU)

Disconnect the E57 ECU connector.

Measure the resistance of the wire harness side connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
E57-13 (SLC+) - 01-1 (BSF)	Below 1 Ω
E57-32 (SLC-) - 01-2 (SLC)	Below 1 Ω
E57-13 (SLC+) - Body ground	10 kΩ or higher
E57-32 (SLC-) - Body ground	10 kΩ or higher

Fig 2: Checking Wire Harness (Coupling - 4WD Control ECU)

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE 4WD CONTROL ECU