Subaru 2009 IMPREZA Service Manual page 796

Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AO:DTC P0196 ENGINE OIL TEMPERATURE SENSOR CIRCUIT RANGE/
PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Detect for abnormal values in the oil temperature sensor output properties.
Judge as NG when the oil temperature does not rise even though the engine is running under a condition
where it should rise.
2. ENABLE CONDITIONS
Secondary Parameters
Battery voltage
Engine speed
Map
Engine coolant temperature
°C (°F)
Engine speed
rpm
Engine coolant temperature
°C (°F)
Engine speed
rpm
3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after starting the engine.
4. DIAGNOSTIC METHOD
• Abnormality Judgement
Judge as NG when the following conditions are established.
Judgement Value
Malfunction Criteria
Engine oil temperature
After engine start oil temperature sensor
characteristic diagnosis timer.
Enable Condition
10.9 V
Value from Map
–40 –30 –20 –10
(–40) (–22) (–4) (14)
500 500 500 500
40 50 60 70
(104) (122) (140) (158)
500 500 500 500
Threshold Value
< 15 °C (59 °F)
Judgement value for after
engine start oil temperature sen-
sor characteristic diagnosis timer
GD(H4SO)-72
0 10 20 30
(32) (50) (68) (86)
500 500 500 500
80 90 100 110
(176) (194) (212) (230)
500 500 500 500