DTC P0341: Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 Or Single Sensor)

Detect the malfunction of crankshaft position sensor output property.

Compare the normal crankshaft position sensor signal with normal camshaft position sensor signal. When each input number does not correspond, judge NG.

Fig 1: Identifying Crankshaft Position Sensor Output Property

Courtesy of SUBARU OF AMERICA, INC.

• Cylinder judgment method 

  When BTDC97°CA crankshaft position sensor signal is input, judge what cylinder piston is brought to the top dead center of compression by camshaft position sensor signal number.

  CYLINDER JUDGMENT METHOD
  
  

  Camshaft position sensor signal number	Next top dead center of compression
  3	#3
  1	#2
  2	#4
  1	#1

Perform the diagnosis without condition.

Always perform the diagnosis continuously.

When BTDC97°CA crankshaft position sensor signal is input, compare the camshaft position sensor signal number in past 4 times with camshaft position sensor signal number at normal. Increase NG judgment counter when each number does not correspond at once, judge OK and clear NG when the camshaft position sensor signal is normal.

Judgment Value 

Time Needed for Diagnosis:  6 revs.

Malfunction Indicator Light Illumination:  Illuminates as soon as malfunction occurs.

• When the OK idling cycle was completed 40 times in a row
• When "Clear Memory" was performed

• When the OK driving cycle was completed 3 times in a row
• When "Clear Memory" was performed

None

Memorize the freeze frame data. (For test mode $02)