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TRANSFER CONTROL UNIT DLN-99 < ECU DIAGNOSIS > [ATX14B] C E F G H I J K L M A B DLN N O P CAUTION: • If CAN COMM CIRCUIT [U1000] or CONTROL UNIT (CAN) [U1010] is displayed with other DTCs, first perform the trouble diagnosis for CAN communication line. • If ABS OP SIG [P1830], VDC OP SIG [P1831] or TCS OP SIG [P1832] is displayed, first perform the trouble diagnosis for ABS system. • If VHCL SPEED SEN·AT [P1807] is displayed, first perform the trouble diagnosis for A/T system. [P1818] or SHIFT ACT CIR [P1819] may be displayed after installing transfer control unit or transfer assembly.) • If CL PRES SW [P1827] or LINE PRES SW [P1828] is displayed only while driving in reverse, check the continuity of R position on transmission range switch. When there is no malfunction found in the electrical system, check the hydraulic system. FLASH CODE CHART [P1826] OIL TEMP SEN Signal voltage from transfer fluid temperature sen- Refer to [P1827] CLUTCH PRES SW • Improper signal from clutch pressure switch is in- put due to open or short circuit. • Malfunction occurs in clutch pressure switch or hydraulic circuit. Refer to [P1828] LINE PRES SW • Improper signal from line pressure switch is input due to open or short circuit. • Malfunction occurs in line pressure switch or hy- draulic circuit. Refer to [P1829] THROTTLE POSI SEN • Malfunction is detected in accelerator pedal posi- tion signal that is output from ECM through CAN • Signal voltage from accelerator pedal position sensor is abnormally high or low. Refer to [P1830] ABS OP SIG Malfunction is detected in ABS operation signal that Refer to [P1831] VDC OP SIG Malfunction is detected in VDC operation signal that Refer to [P1832] TCS OP SIG Malfunction is detected in TCS operation signal that Refer to DTC CONSULT-III Diagnostic item is detected when... Reference Flashing pattern Item Diagnostic item is detected when... Reference 2 Vehicle speed signal • Malfunction is detected in output shaft revolution signal that is output from TCM through CAN communication. • Improper signal is input while driving. . 3 Clutch pressure sole- Proper voltage is not applied to clutch pressure solenoid . 4 2-4WD solenoid signal Proper voltage is not applied to 2-4WD solenoid valve due . 5 Transfer motor Transfer motor does not operate properly due to open or . 6 Vehicle speed signal • Malfunction is detected in vehicle speed signal that is out- put from ABS actuator and electric unit (control unit) • Improper signal is input while driving. . 7 CAN communication Malfunction has been detected from CAN communication . 8 AD converter AD converter system of transfer control unit is malfunction- . |