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DTC P1805 BRAKE SWITCH EC-589 [VQ35DE] C D E F G H I J K L M A EC DTC P1805 BRAKE SWITCH PFP:25320 Component Description NBS0055Q Brake switch signal is applied to the ECM through the stop lamp ● ICC brake switch (models with ICC) (2) ● ASCD brake switch (models with ASCD) (2) CONSULT-II Reference Value in Data Monitor Mode NBS0055R Specification data are reference values. On Board Diagnosis Logic NBS0055S The MIL will not light up for this diagnosis. FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode. PBIB2705E MONITOR ITEM CONDITION SPECIFICATION BRAKE SW ● Ignition switch: ON Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1805 Brake switch A brake switch signal is not sent to ECM for ● Harness or connectors ● Stop lamp switch Engine operating condition in fail-safe mode ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. Vehicle condition Driving condition When engine is idling Normal When accelerating Poor acceleration |