Toyota Venza: Linear Solenoid Circuit (C1298/98)

Toyota Venza Service Manual / Mf1a Transfer / 4wd / Awd / Active Torque Control 4wd System / Linear Solenoid Circuit (C1298/98)

DESCRIPTION

The AWD control ECU receives signals from each sensor to control clutch pressure to distribute torque according to the driving conditions.

DTC No.	DTC Detection Condition	Trouble Area
C1298/98	When the following continues for 1 second or more: - With the current of the 0.8 A or more, an open or short in the electromagnetic solenoid circuit occurs.	4WD fuse Wire harness and connector Electromagnetic control coupling AWD control ECU

DTC No.

DTC Detection Condition

Trouble Area

C1298/98

When the following continues for 1 second or more:

- With the current of the 0.8 A or more, an open or short in the electromagnetic solenoid circuit occurs.

4WD fuse
Wire harness and connector
Electromagnetic control coupling
AWD control ECU

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

Check the condition of each related circuit connector before troubleshooting (See page ).

PROCEDURE

1.	CHECK WIRE HARNESS (AWD CONTROL ECU - BATTERY)

(a) Disconnect the ECU connector.

(b) Measure the voltage of the wire harness side connector.

Standard Voltage:

Tester Connection	Condition	Specified Condition
D38-9 (BSLC) - Body Ground	Always	11 to 14 V

Text in Illustration

*1	Rear view of wire harness connector (to AWD Control ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	INSPECT ELECTRO MAGNETIC CONTROL COUPLING (ELECTROMAGNETIC SOLENOID)

(a) Remove the coupling connector.

(b) Measure the resistance of the solenoid.

Standard Resistance:

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

Text in Illustration

*1	Electromagnetic Solenoid

REPLACE ELECTRO MAGNETIC CONTROL COUPLING

3.	CHECK WIRE HARNESS (ELECTROMAGNETIC CONTROL COUPLING - AWD CONTROL ECU)

(a) Disconnect the ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D38-13 (SLC+) - O1-1 (BSF)	Always	Below 1 Ω
D38-32 (SLC-) - O1-2 (SLC)	Always	Below 1 Ω
D38-13 (SLC+) - Body ground	Always	10 kΩ or higher
D38-32 (SLC-) - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Electromagnetic Solenoid)

Rear view of wire harness connector

(to AWD Control ECU)

REPLACE AWD CONTROL ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

ABS Malfunction (C1296/96)

DESCRIPTION If a malfunction in the speed sensor signal circuit occurs, the AWD control ECU will output this DTC. DTC No. DTC Detecting Condition Trouble Area ...

Engine Circuit Malfunction (C1280/82)

DESCRIPTION If a malfunction in the ECM circuit occurs, the AWD control ECU will output this DTC. DTC No. DTC Detection Condition Trouble Area C12 ...

Other materials about Toyota Venza:

Camshaft Position Sensor "B" Circuit (Bank 1) (P0365,P0367,P0368)
DESCRIPTION The camshaft position sensor (EV signal sensor) for the exhaust camshaft consists of a magnet and MRE (Magneto Resistance Element). The exhaust camshaft has a timing rotor for the camshaft position sensor. When the camshaft rotates, changes o ...

Power Source Circuit
DESCRIPTION This circuit supplies power source voltage from the battery to terminal B of the steering lock ECU (steering lock actuator assembly). This is used as power source for the CPU, motor, communication, and peripheral circuits. WIRING DIAGRAM P ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" ...