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Home >> Infiniti >> 2003 >> FX45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1574: Automatic Speed Control Device (ASCD) Vehicle Speed Sensor >> Circuit Description
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Circuit Description

The ECM receives 2 vehicle speed signals via CAN communication line. One is sent from unified meter and A/C amp. The other is from Transmission Control Module (TCM). The ECM uses these signals for ASCD control.