DTC P18A2-00: Coupling Component Temperature Sensor System: Low Input

P18A2: 00 (PCM (PYUL)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Coupling component temperature sensor system: Low input
Detection condition	The PCM detects a short to ground in the coupling component temperature sensor circuit.
Fail-safe	Inhibits the i-ACTIV AWD system control.
Possible cause	Coupling temperature sensor malfunction (Refer to [MAGNETIC CLUTCH INSPECTION ] in service information). Malfunction in wiring harness (including connector/terminal) between coupling component temperature sensor and electrical supply unit (ESU) (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Electrical supply unit (ESU) malfunction (Refer to [ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION ] in service information). PCM malfunction (Refer to [PCM REMOVAL/INSTALLATION ] in service information).
Repeatability verification procedure	Clear the DTC recorded in the memory. (See CLEARING DTC .) Switch the ignition ON (engine off).
Courtesy of MAZDA MOTORS CORP.
1	Electrical supply unit (ESU)
2	Coupling component temperature sensor (electronic control coupling)