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EC-404 < COMPONENT DIAGNOSIS > [VK56DE] ICC BRAKE SWITCH 4. Check voltage between ICC brake switch terminal 1 and ground with CONSULT-III or tester. OK or NG OK >> GO TO 6. NG >> GO TO 3. 3. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT-II 1. Turn ignition switch OFF. 2. Disconnect ICC brake hold relay. 3. Check harness continuity between ICC brake switch terminal 1 and ICC brake hold relay terminal 3. Refer to Wiring Diagram OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT 1. Turn ignition switch ON. 2. Check the voltage between ICC brake hold relay terminal 4 and ground with CONSULT-III or tester. OK or NG OK >> GO TO 8. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. • Harness connectors M31, E152 • Fuse block (J/B) connector M4 • 10 A fuse (No.15) • Harness for open or short between ICC brake hold relay and fuse >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Voltage: Battery voltage PBIB0857E BBIA0471E Continuity should exist. Voltage: Battery voltage MBIB0059E |