When replacing the skid control ECU perform the zero point calibration See Precheck

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NG: Go to next step.

4. Check continuity between terminal GND of skid control ECU connector and body ground. CHECK:

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

Resistance: 1 ohm or less

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia

Toyota 1kz Ecu
Fig. 61: Measuring Resistance B/W Terminal GND Of Skid Control ECU Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Repair or replace harness or connector.

OK: Check for open circuit in harness and connector between skid control ECU and battery (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

DTC C1247/47: DELTA S SENSOR CIRCUIT

CIRCUIT DESCRIPTION

DTC No

DTC Detecting Condition

Trouble Area

C1247/47

• When the output turns 4.7 V or more or 0.2 V or less per 100 msec.

• When the output does nol return to 2.5 V even when 500 msec, or more elapse, in spile of no change in the brake operation.

• Brake booster

• Delta S sensor circuit •Skid control ECU

Fig. 62: DTC C1247/47 Detecting Condition Trouble Area Table Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

WIRING DIAGRAM

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia

C1247 Toyota

Fig. 63: Wiring Diagram Delta S Sensor

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 63: Wiring Diagram Delta S Sensor

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

HINT:

Start the inspection from step 1 in the case of using the hand-held tester and start from step 2 in the case of not using the hand-held tester.

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