Subaru 2009 IMPREZA Service Manual page 763

Diagnostic Trouble Code (DTC) Detecting Criteria
Y: DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP
FUEL CONTROL
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of engine coolant temperature output property.
Judge as NG when the engine coolant temperature does not rise in driving conditions where it should.
2. COMPONENT DESCRIPTION
(A) Resistance value (k )
(1) Connector
3. ENABLE CONDITIONS
Secondary Parameters
Engine speed
Battery voltage
Map
Engine coolant temperature
°C (°F)
Engine speed
rpm
Engine coolant temperature
°C (°F)
Engine speed
rpm
4. GENERAL DRIVING CYCLE
Perform the diagnosis only once after engine start.
(1)
(2)
(B) Temperature °C (°F)
(2) Thermistor element
Enable Condition
Value from Map
10.9 V
–40 –30 –20 –10
(–40) (–22) (–4) (14)
500 500 500 500
40 50 60 70
(104) (122) (140) (158)
500 500 500 500
GD(H4SO)-39
(A)
0 10 20 30
(32) (50) (68) (86)
500 500 500 500
80 90 100 110
(176) (194) (212) (230)
500 500 500 500
GENERAL DESCRIPTION
(B)
EN-02917