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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)] BRC-31 < SYSTEM DESCRIPTION > [VDC/TCS/ABS] C D E G H I J K L M A B BRC N O P NOTE: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is a oper- ACTIVE TEST MODE CAUTION: • Never perform active test while driving vehicle. lamp and brake warning lamp is ON. • ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are ON during active test. NOTE: normal. (Only solenoid valve and ABS motor.) • “TEST IS STOPPED” in “ABS” with CONSULT-III is displayed 10 seconds after operation start. Test Item ABS SOLENOID VALVE • Select “Up”, “Keep” and “Down” of “ACTIVE TEST” in “ABS” with CONSULT-III. Then use screen monitor to check that solenoid valve operates as shown in the table below. *: On for 1 to 2 seconds after the select, and then Off. NOTE: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is a ABS SOLENOID VALVE (ACT) • Select “Up”, “ACT UP” and “ACT KEEP” of “ACTIVE TEST” in “ABS” with CONSULT-III. Then use screen monitor to check that solenoid valve operates as shown in the table below. EBD WARN LAMP Brake warning lamp CRANKING SIG Crank operation 4WD FAIL REQ AWD fail-safe signal status 2WD/4WD Distinguish 2WD and AWD Monitor item (Unit) SELECT MONITOR ITEM Remarks ECU INPUT SIGNALS MAIN SIGNALS Test item Display item Display Up Keep Down FR RH SOL FR RH IN SOL Off On On FR RH OUT SOL Off Off On* FR LH SOL FR LH IN SOL Off On On FR LH OUT SOL Off Off On* RR RH SOL RR RH IN SOL Off On On RR RH OUT SOL Off Off On* RR LH SOL RR LH IN SOL Off On On RR LH OUT SOL Off Off On* |