Reading and Clearing Diagnostic Trouble Codes

SELF-DIAGNOSTIC FUNCTION




1. If the self-diagnostic function is in operation, CAN communication stops and LIN communication is converted into self-diagnostic communication.
2. Only BCM communicates directly with Hi-scan, and the other units perform self-diagnostic function by BCM through the mediator of CAN or LIN.
3. Self-diagnostic functions of the units.

BCM SELF DIAGNOSTIC FUNCTION

1. It performs input display, failure diagnosis and forced drive through the direct communication with Hi-scan.
2. Input display It displays the input, power level and speed sensor outputs.
3. Failure diagnosis It displays the failure diagnosable in the BCM.
4. Forced drive All loads controlled directly by the BCM can be driven directly by Hi-scan.

ADM, DDM, IMS SELF DIAGNOSTIC FUNCTION




1. It can be communicated with Hi-scan by way of BCM.
2. BCM receives the commands from hi-scan and remits to ADM, DDM, and IMS units with CAN BCM receives the response from the units with CAN inversely, and feedback to Hi-scan with CAN.
3. Input display and output forced drive can be performed in each of ADM, DDM, and IMS units Though, failure diagnosis is limited to the certain diagnosis ranges.

SELF-DIAGNOSTIC FUNCTION OF SAFETY ECU AND SWITCH MODULE




1. It can be communicated by way of BCM.
2. BCM receives the command from Hi-scan and remits to ADM and DDM through CAN, and ADM and DDM remits to safety ECU with LIN. As for the responses of units, safety.
3. Safety ECU can perform all three functions of input display, forced drive and failure diagnosis. Though, switch module can only performs input display.