Dtc Trouble Detection Condition

DTC No.

DTC Detecting Condition

Trouble Area

C1249/49

ECU terminal STP voltage Is low when both ignition switch and stop light switch are ON.

• Stop light switch

• Stop light switch circuit

• Skid control ECU

2007 BRAKES Brake Control - Sequoia

WIRING DIAGRAM

WIRING DIAGRAM

2002 Echo Tail Light Wiring
Fig. 64: Open In Stop Light Switch - Wiring Diagram INSPECTION PROCEDURE

NOTE: When replacing the skid control ECU, perform the zero point calibration (See CALIBRATION ).

2007 BRAKES Brake Control - Sequoia

1. CHECK STOP LIGHT SWITCH OPERATION

a. Check that the stop light comes on when the brake pedal is depressed and turns off when the brake pedal is released.

OK: Stop light switch operation is normal. NG: REPAIR STOP LIGHT CIRCUIT OK: GO TO Next Step

2. CHECK SKID CONTROL ECU TERMINAL VOLTAGE (STP)

a. Disconnect the skid control ECU connector.

b. Measure the voltage between terminal STP of the skid control ECU harness side connector and body ground during depressing the brake pedal.

Voltage: 8 to 14 V OK: REPLACE SKID CONTROL ECU

Fig. 65: Measuring Voltage Between Terminal STP Of Skid Control ECU Harness Side Connector And Body Ground

NG: CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - STOP LIGHT SWITCH) DTC C1251/51 OPEN IN PUMP MOTOR CIRCUIT DESCRIPTION

ABS pump motor is located inside the brake actuator. The motor is used for BA, TRAC and VSC operation. DTC TROUBLE DETECTION CONDITION

DTC No.

DTC Detecting Condition

Trouble Area

C1251/51

Pump motor does not operate during the initial check.

ABS and VSC actuator

2007 BRAKES Brake Control - Sequoia

WIRING DIAGRAM

WIRING DIAGRAM

Inspection Procedure
Fig. 66: Open In Pump Motor - Wiring Diagram INSPECTION PROCEDURE

NOTE:

Was this article helpful?

0 0
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.

Get My Free Ebook


Post a comment