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3 CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. PBIB0857E Voltage: Battery voltage OK or NG OK © GO TO 5. NG © GO TO 4. 4 DETECT MALFUNCTIONING PART Check the following. I Fuse block (J/B) connector E83 I 10A fuse I Harness for open or short between ASCD brake switch and fuse © Repair open circuit or short to ground or short to power in harness or connectors. 5 CHECK ASCD BRAKE SWITCH INPUT CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for open to ground and short to power. OK or NG OK © GO TO 9. NG © GO TO 6. 6 DETECT MALFUNCTIONING PART Check the following. I Harness connectors E81, M15 I Harness connectors M223, F53 I Harness for open and short between ECM and ASCD brake switch © Repair open circuit or short to ground or short to power in harness or connectors. GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P1572 ASCD BRAKE SWITCH Diagnostic Procedure (Cont’d) EC-625 |