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Home >> Toyota >> 2007 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine Control System) >> SFI System >> DTC P1121 Coolant Flow Control Valve Position Sensor Circuit Stuck >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2007 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

Potentiometer detection 

TYPICAL MALFUNCTION THRESHOLDS

Either of the following conditions is met: (a)or(b)
(a) Potentiometer output difference [D divided by C]
C: Difference between previous and current target
D: Difference between potentiometer output and previous target
10% or more
(b) Potentiometer output deviation from target 0.1 V or more

Tank outlet coolant temperature detection 

TANK OUTLET COOLANT TEMPERATURE DETECTION

Either of the following conditions is met: (a) or (b)
(a) Heat storage tank outlet coolant temperature when recover starts 60°C(108°F) or more
(b) Heat storage tank outlet coolant temperature difference during water valve check Less than 3°C (5.4°F)