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Home >> Suzuki >> 2007 >> Aerio Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P1600: Serial Communication Problem Between ECM and TCM >> Circuit Description

Circuit Description

The serial data line is pulled up to about 12 V by ECM and TCM transmits information to ECM through it by controlling its grounding. TCM constantly sends information while ignition switch is ON as to whether judgement was made or not with respect to all detectable DTCs as well as whether or not abnormality exists after judgement.

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