Subaru 2009 IMPREZA Service Manual page 816

Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
BC:DTC P0341 CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/
PERFORMANCE (BANK 1 OR SINGLE SENSOR)
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of camshaft position sensor output property.
Judge as NG when the camshaft line signal input timing is shifted from the crankshaft signal because of tim-
ing belt tooth chip etc.
2. COMPONENT DESCRIPTION
OK NG
(A)
#1BTDC10 CA
(B)
10 CA
(A) Camshaft signal
(1)
(1) Boss
(2) Cam sprocket
OK NG
#3BTDC10 CA #2BTDC10 CA
30 CA 30 CA
(B) Crankshaft signal
(4)
(3)
(1)
(2)
(3) Air gap
(4) Camshaft position sensor
GD(H4SO)-92
#4BTDC10 CA #1BTDC10 CA
(5)
(5) One camshaft revolution
(two engine revolutions)
EN-05542
EN-01782