Subaru 2009 IMPREZA Service Manual page 1761

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
(1) Opener spring
(2) Return spring
(3) Intermediate stopper
3. ENABLE CONDITIONS
Secondary Parameters
Battery voltage
Throttle position sensor
4. GENERAL DRIVING CYCLE
• Ignition switch ON
• Ignition switch OFF
(1)
(3)
(2)
(4)
(4) Full closed stopper
(5) Throttle valve
(6) Gear
Enable Condition
6 V
Normal
OFF
ON (Only after clearing memory)
GD(H4DOTC)-173
(8)
S S
(7)
(6)
(5)
(7) DC motor
(8) Main and sub throttle position sensor
GENERAL DESCRIPTION
EN-04463