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P1572 ICC BRAKE SWITCH EC-1053 < DTC/CIRCUIT DIAGNOSIS > [VK50VE] C D E F G H I J K L M A EC N P O P1572 ICC BRAKE SWITCH Description INFOID:0000000005237547 When the brake pedal is depressed, ICC brake switch is turned OFF and stop lamp switch is turned ON. ECM for the ICC function. DTC Logic INFOID:0000000005237548 DTC DETECTION LOGIC NOTE: . • This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. NOTE: >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Start engine (VDC switch OFF). 2. Press MAIN switch and check that CRUISE indicator is displayed in combination meter. 3. Drive the vehicle for at least 5 consecutive seconds under the following conditions. CAUTION: Always drive vehicle at a safe speed. 4. Check 1st trip DTC. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1572 ICC brake switch A) ON signals from the stop lamp switch • Harness or connectors (The stop lamp switch circuit is shorted.) • Harness or connectors (The ICC brake switch circuit is shorted.) • Stop lamp switch B) ICC brake switch signal is not sent to Vehicle speed More than 30 km/h (19 mph) Selector lever Suitable position |