Subaru Legacy IV (2008 year). Service manual — part 212
GD(H4SO)-150
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Details of Judgement Value
Details of Judgement time (The actual opening angle
d target opening angle is always 1000 milliseconds)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(1)
Difference between target opening
angle and actual opening angle (°)
(2)
Target throttle opening angle (°)
(3)
NG area
(1)
Judgement time (milliseconds)
(2)
Throttle position sensor 1 open-
ing angle
(3)
NG area
EN-03129
30
20
10
0
(25.0)
(12.0)
(5.0)
(3.5)
0
5 (6.15)
10
(9.65)
(14.65)
15
20
25 (26.65)
30
(1)
(3)
(2)
EN-01865
0
5 (5.5)
10
(9.0)
(13.0) 15
20
25
30
(2)
0
1000
(250)
(22.0)
(300)
(400)
500
(3)
(1)
GD(H4SO)-151
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CD:DTC P0700 TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
1. OUTLINE OF DIAGNOSIS
Judge as NG when there is CAN communication with the TCM and there is a MIL lighting request.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. DIAGNOSTIC METHOD
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Time Needed for Diagnosis: Less than 1 second
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Battery voltage
t 10.9 V
MIL lighting request from TCM
Yes
Judgement Value
Malfunction Criteria
Threshold Value
Battery voltage
t 10.9 V
MIL lighting request from TCM
None
GD(H4SO)-152
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CE:DTC P0851 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW (AT MODEL)
1. OUTLINE OF DIAGNOSIS
Judge the open or short circuit of the neutral SW.
Judge as NG when the ECM neutral terminal input differs from the reception data from TCM.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously in 2 seconds after starting the engine.
4. DIAGNOSTIC METHOD
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Time Needed for Diagnosis: 100 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Time Needed for Diagnosis: Less than 1 second
Secondary Parameters
Enable Conditions
Battery voltage
t 10.9 V
Starter relay
OFF
Judgement Value
Malfunction Criteria
Threshold Value
Neutral switch signal in ECM when “P”/
“N” range in TCM are “OFF” and when
the other switches are “ON”
LOW (ON)
Judgement Value
Malfunction Criteria
Threshold Value
Neutral switch signal in ECM when “P”/
“N” range in TCM are “OFF” and when
the other switches are “ON”
HIGH (OFF)
GD(H4SO)-153
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CF:DTC P0851 NEUTRAL SWITCH INPUT CIRCUIT LOW (MT MODEL)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of neutral SW.
Judge as NG when there is no change in the neutral SW even if the driving shift was applied. (There is neutral
SW ON/OFF inversion from the vehicle speed and engine speed.)
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously in 2 seconds after starting the engine.
4. DIAGNOSTIC METHOD
• Abnormality Judgement
Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW
change.
Time Needed for Diagnosis: 3 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• Normality Judgement
Judge as OK and clear NG when there is change in the neutral SW.
Time Needed for Diagnosis: Less than 1 second
Secondary Parameters
Enable Conditions
Battery voltage
t 10.9 V
Starter relay
OFF
Judgement Value
Malfunction Criteria
Threshold Value
Neutral switch signal (while changing
from a to b below)
LOW (ON) continues.
Driving condition change
From a) to b)
a) Engine speed 600 rpm — 900 rpm &
Vehicle speed = 0 km/h (0 MPH)
b) Engine speed 1600 rpm — 900 rpm &
Vehicle speed
t 0 km/h (0 MPH)
Judgement Value
Malfunction Criteria
Threshold Value
Neutral switch signal (while changing
from a to b below)
Changes to HIGH
(OFF).
Driving condition change
From a) to b)
a) Engine speed 600 rpm — 900 rpm &
Vehicle speed = 0 km/h (0 MPH)
b) Engine speed 1600 rpm — 900 rpm &
Vehicle speed
t 0 km/h (0 MPH)
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