System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
For details, refer to CAN COMMUNICATION UNIT in CAN SYSTEM (INTRODUCTION) - TITAN article.
Operation Procedure
- Perform "CONSULT-II SETTING PROCEDURE". Refer to «CONSULT-II SETTING PROCEDURE»(ref-169999-S11589275292004122700000) .
- With engine at idle, touch "SELF-DIAG RESULTS". Display shows malfunction experienced since the last erasing operation.
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| CAUTION | If "CAN COMM CIRCUIT [U1000]" is displayed with other DTCs, first perform the trouble diagnosis for CAN communication line. |
Note. If "SHIFT ACT POSI SW [P1818]" or "SHIFT ACT CIR [P1819]" is displayed, first erase self-diagnostic results. ("SHIFT ACT POSI SW [P1818]" or "SHIFT ACT CIR [P1819]" may be displayed after installing transfer control unit or transfer assembly.)
- Perform "CONSULT-II SETTING PROCEDURE". Refer to «CONSULT-II SETTING PROCEDURE»(ref-169999-S11589275292004122700000) .
- Touch "DATA MONITOR".
- Select from "SELECT MONITOR ITEM", screen of data monitor mode is displayed.
Note. When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS. Also, any malfunction detected while in this mode will be displayed at real time.
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Self-Diagnostic Procedure (With CONSULT-II)
Refer to SELF-DIAG RESULT MODE .
Description
If the engine starts when there is something wrong with the 4WD system, the 4WD warning lamp turns ON or flickers in the combination meter. When the system functions properly, the warning lamp turns ON when the ignition switch is turned to "ON", and it turns OFF after engine starts. To locate the cause of a problem, start the self-diagnosis function. The 4WD warning lamp in the combination meter will indicate the problem area by flickering according to the self-diagnostic results. As for the details of the 4WD warning lamp flickering patterns, refer to DIAGNOSTIC PROCEDURE .