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The normal conditions are as shown in the table below. The signals can be read using the Techstream. BRAKE PEDAL REFERENCE DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART WIRING DIAGRAM Fig. 188: Brake Switch - Wiring Diagram INSPECTION PROCEDURE HINT: Read freeze frame data using the Techstream. Freeze frame data records the engine condition when STP signal conditions can be checked using the Techstream. a. Connect the Techstream to the DLC3. b. Turn the ignition switch to ON. c. Turn the Techstream ON. Signal Brake Pedal Released In Transition Brake Pedal Depressed STP OFF ON ON ST1- ON ON OFF DTC DTC Detection Condition Trouble Area P0504 Conditions (a), (b) and (c) continue a. Ignition switch ON b. Brake pedal released c. STP signal OFF when ST1- signal OFF Short in stop light switch STOP fuse IGN fuse Stop light switch ECM
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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