Transmission Control Systems: Description and Operation
DESCRIPTIONThis circuit line (LAN) controls the smooth shifting up and down of A/T during the hard acceleration/deceleration. Pulse signals are exchanged between ECM and A/T control unit (P0600). This circuit line is also used to communicate malfunction information related to A/T (Automatic Transmission) is transferred through the line (LAN circuit) from A/T control unit to ECM (P1605). Be sure to erase the malfunction information such as DTC not only in A/T control unit but also ECM after the A/T related repair.