DTC Detecting Condition and Trouble Area

P1818 SYMPTOM DIAGNOSIS DESCRIPTION CHART

DTC detecting condition	Trouble area
DTC P1818: Stepper Motor Performance Difference between measured primary pulley speed and estimated primary pulley speed is more than 1000 RPM for 5 sec. (2 D/C detection logic)	CAN communication line Primary pulley speed sensor its circuit Secondary pulley speed sensor its circuit Stepper motor (valve body assembly) and/or its circuit TCM