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

OK: Go to next step.

Replace brake booster ( VACUUM BRAKE BOOSTER ). DTC C1249/49: STOP LIGHT SWITCH CIRCUIT CIRCUIT DESCRIPTION

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 •Slop light switch circuit

GOM2I313

GOM2I313

Fig. 66: DTC C1249/49 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

2004 Prius Diagram Abs
Fig. 67: Wiring Diagram - Stop Light Switch Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. Check operation of the stop light switch.

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

CHECK:

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

NG: Repair stop light circuit (See LOCATION ). OK: Go to next step. 2. Check voltage between terminal STP of skid control ECU and body ground.

PREPARATION:

Disconnect skid control ECU connector.

CHECK:

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

2010 Toyota Corolla Skid Control Ecu
Fig. 68: Measuring Voltage B/W Terminals STP Of Skid Control ECU & Body Ground Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

OK: Check and replace skid control ECU.

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Responses

  • filiberta
    What does zero point calibration prius skid control ecu?
    8 years ago
  • FELIX
    Where is the electric motor located on the prius?
    7 years ago
  • kalervo h
    How to replace 04 toyota sequoia skid control ecu?
    7 years ago
  • alfrida grubb
    How to Calibrate ABS light on toyota RAV4 2004 model?
    3 years ago

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