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ICC BRAKE SWITCH EC-493 < COMPONENT DIAGNOSIS > [VQ37VHR] C D E F G H I J K L M A EC N P O ICC BRAKE SWITCH Description INFOID:0000000001911045 When the brake pedal is depressed, ICC brake switch is turned OFF and stop lamp switch is turned ON. ECM for the ICC function. Component Function Check INFOID:0000000001734322 1. CHECK ICC BRAKE SWITCH FUNCTION With CONSULT-III 1. Turn ignition switch ON. 2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III. 3. Check “BRAKE SW1” indication under the following conditions. Without CONSULT-III 1. Turn ignition switch ON. 2. Check the voltage between ECM harness connector and ground. Is the inspection result normal? YES >> INSPECTION END NO >> Go to Diagnosis Procedure INFOID:0000000001734323 1. INSPECTION START Check which type of transmission the vehicle is equipped with. Which type of transmission? A/T >> GO TO 2. M/T >> GO TO 7. 2. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ICC brake switch harness connector. 3. Turn ignition switch ON. 4. Check the voltage between ICC brake switch harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 3. 3. DETECT MALFUNCTIONING PART Monitor item Condition Indication BRAKE SW1 Brake pedal (A/T) Slightly depressed OFF Fully released ON ECM Ground Condition Voltage Connector Terminal M107 126 (ICC brake switch signal) Ground Brake pedal (A/T) Slightly depressed Approx. 0V Fully released Battery voltage ICC brake switch Ground Voltage Connector Terminal E114 1 Ground Battery voltage |