Subaru LEGACY 2006 Manual page 628

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Diagnostic Trouble Code (DTC) Detecting Criteria
CO:DTC P1160 RETURN SPRING FAILURE
1. OUTLINE OF DIAGNOSIS
Judge as NG when the valve is opened more than the default opening angle, but does not move to the close
direction with the motor power stopped.
2. COMPONENT DESCRIPTION
(3)
(1) Opener spring
(2) Return spring
(3) Intermediate stopper
3. ENABLE CONDITION
Secondary Parameters
Throttle opening angle
Motor continuity
4. GENERAL DRIVING CYCLE
• Ignition switch ON → OFF
• Ignition switch OFF → ON (Only after clearing memory)
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
Opening variation after continuity is set
to OFF
Time Needed for Diagnosis: 1880 milliseconds
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
6. DTC CLEAR CONDITION
• When the OK idling cycle is completed 40 times in a row
• When "Clear Memory" is performed (Only with engine stopped)
(1)
(2)
(4)
(4) Full closed stopper
(5) Throttle valve
(6) Gear
Enable Conditions
OFF
OFF
Threshold Value
≥ 2°
GD(H4SO)-191
GENERAL DESCRIPTION
(8)
S S
(7)
(6)
(5)
(7) DC motor
(8) Main and sub throttle sensor
EN-01866