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STC-42 < FUNCTION DIAGNOSIS > [WITH 4WAS] DIAGNOSIS SYSTEM (4WAS FRONT CONTROL UNIT) *: Communication line between 4WAS front control unit and 4WAS main control unit CAN DIAGNOSTIC SUPPORT MONITOR Description • The communication condition from 4WAS front control unit to 4WAS main control unit and malfunction counter are displayed. • Error counter displays OK if any malfunction is not detected in the past. If the malfunction is detected, it dis- plays 0. When turning the ignition switch ON, if it is normal, it displays 1. The upper limit of the countries 39. ACTIVE TEST MODE Description • 4WAS front actuator assembly activation is checked according to the control signal from CONSULT-III. “LOCK OPERATION”. Perform this mode when performing 4WAS front actuator adjustment. CAUTION: Never steer the steering wheel during “RELEASE”. • The steering angle sensor neutral point judgment (OK/NG) is performed with each control signal of “SLOW MODE”. MAIN ECU FAIL [On/Off] 4WAS main control unit fail-safe function condition transmitted from 4WAS main control unit M-ECU TMPO FL [On/Off] The protection function mode status of 4WAS main control unit transmitted from 4WAS main LOCK MODE [0/1/2/3/4/5] 4WAS front lock solenoid valve (lock structure) condition is indicated. NEUTRAL OUT [On/Off] 4WAS front actuator misaligned angle adjustment control condition is indicated. EX OPERAT [On/Off] 4WAS system enters in the protection function due to the heavy load condition and tempo- SLOW MODE [Ok/–] ACTIVE TEST “SLOW MODE” judgment condition is indicated. Monitor item (Unit) Remarks Item PRSNT PAST TRANSMIT DIAG OK / UNKWN OK / 0 – 39 4WAS(MAIN) OK / UNKWN OK / 0 – 39 Select test item Control signal Remarks LOCK OPERATION RELEASE 4WAS front lock solenoid valve lock is re- LOCK 4WAS front lock solenoid valve lock is ap- SLOW MODE MODE START Steering angle sensor neutral point check MODE END Steering angle sensor neutral point check |