Perform Active Test By Intelligent Tester Abs Motor Relay

a. Select the item "ABS MOTOR RELAY" in the ACTIVE TEST and operate the ABS motor relay on the intelligent tester.

b. Check the operation sound of the ABS pump motor when operating it with the intelligent tester. VEHICLE CONDITION / TEST DETAILS

Item

Vehicle Condition / Test Details

Diagnostic Note

ABS MOT RELAY

Turns ABS motor relay ON / OFF

Operation of motor (clicking sound) can be heard

c. The operation sound of the pump motor should be heard. OK: Operation sound can be heard. NG: GO TO step 2

2007 BRAKES Brake Control - Sequoia

OK: CHECK AND REPLACE ABS AND TRACTION ACTUATOR

2. CHECK HARNESS AND CONNECTOR

a. Disconnect the skid control ECU connector.

b. Measure the resistance between terminal GND of the skid control ECU harness side connector and body ground.

Resistance: 1 ohms or less NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

yGND

p

rr T it 1 m "it f f" (it

|\i C133Kfl&n

Fig. 67: Measuring Resistance Between Terminal GND Of Skid Control ECU Connector And Body Ground

OK: CHECK AND REPLACE ABS AND TRACTION ACTUATOR

DTC C1310/11 OPEN OR SHORT IN ACTIVE BRAKE BOOSTER CIRCUIT DESCRIPTION

Operates when booster's negative pressure is insufficient and allows for a stable braking control.

DTC TRO

>UBLE DETECTION CONDITION

DTC No.

DTC Detecting Condition

Trouble Area

C1310/11

Open or short in active brake booster solenoid circuit.

• Brake booster

• Active brake booster solenoid circuit

WIRING DIAGRAM

WIRING DIAGRAM

2007 BRAKES Brake Control - Sequoia

Active Brake Booster

ABS and VSC Actuator {Skid Control ECU)

Active Brake Booster

ABS and VSC Actuator {Skid Control ECU)

Fig. 68: Open Or Short In Active Brake Booster - Wiring Diagram INSPECTION PROCEDURE

1. CHECK BRAKE BOOSTER

a. Disconnect the connector from the brake booster.

b. Check resistance between terminals 3 and 4 of the brake booster.

Resistance: 1.1 to 1.7 ohms NG: REPLACE BRAKE BOOSTER

Sequoia 2003 Active Booster Solenoid
Fig. 69: Checking Resistance Between Terminals 3 And 4 Of Brake Booster OK: GO TO Next Step

2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE BOOSTER) NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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