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Diagnostic item Diagnostic item is detected when ... Diagnostic procedure LAN SIGNAL 1 I ECM judges that communication signal between ABS/TCS control unit 4 LAN SIGNAL 2 I On the Local Area Network (LAN) between ABS/TCS control unit and 5 LAN SIGNAL 3 I The communication start signal output is not terminated and the ordinary — ENGINE SPEED SIG I Engine speed signal from ECM is not entered. 3 ENGINE SYSTEM I Based on the signal from ECM, the ABS/TCS control unit judges that the 1 TAC COMM I The communication signal between ABS/TCS control unit and Throttle 2 LAN CIRCUIT 1 I The communication line between ABS/TCS control unit and ECM is open 6 LAN CIRCUIT 2 I An instantaneous signal interruption occurs repeatedly on the communi- 6 I If the ABS warning lamp activates and Self-diagnosis could not detect any malfunctions, perform “Diag- GI MA EM LC EC FE AT PD FA RA ST RS BT HA EL IDX TROUBLE DIAGNOSES CONSULT-II Inspection Procedure for ABS/TCS BR-65 |