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EC-354 < DTC/CIRCUIT DIAGNOSIS > [MR18DE] P1572 ASCD BRAKE SWITCH P1572 ASCD BRAKE SWITCH Description INFOID:0000000009947480 When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. for the ASCD function. DTC Logic INFOID:0000000009947481 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 turn ignition switch OFF and wait at >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A 1. Start engine. 2. Press MAIN switch and make sure 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 DTC. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1572 ASCD brake switch A) When the vehicle speed is above 30 km/h • Harness or connectors (The stop lamp switch circuit is shorted.) • Harness or connectors (The ASCD brake switch circuit is shorted.) • Harness or connectors (The ASCD clutch switch circuit is shorted.) • Stop lamp switch B) ASCD brake switch signal is not sent to Vehicle speed More than 30 km/h (19 mph) Selector lever Suitable position |