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Engine Control System (SFI) - Diagnosis
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DTC P1121: Coolant Flow Control Valve Position Sensor Circuit Stuck
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Monitor Strategy
Monitor Strategy
Potentiometer detection
Fig 1: DTC P1121 Monitor Strategy Table Of Potentiometer Detection
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tank outlet coolant temperature detection
Fig 2: DTC P1121 Monitor Strategy Table Of Tank Outlet Coolant Temperature Detection
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002