Acura RL. Manual - part 20

Malfunction Threshold 

Other than 22 pulses are detected during intervals between reference pulses for each crankshaft revolution. 
This condition has been detected at least 30 times. 

Diagnosis Details 

Conditions for illuminating the MIL 

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the 
PCM memory. 

Conditions for clearing the MIL 

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the 
diagnostic runs. 

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by 
disconnecting the battery. 

DTC P0340 (9): ADVANCED DIAGNOSTICS 

DTC P0340: CAMSHAFT POSITION (CMP) SENSOR NO SIGNAL 

Fig. 54: Camshaft Position Sensor - Circuit Diagram 

General Description 

Condition

 

State of the engine

Running

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

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The camshaft position (CMP) sensor detects the intake camshaft timing and sends pulsing signals to the 
powertrain control module (PCM). The PCM determines the camshaft position according to the signals from 
the crankshaft position (CKP) sensor and the CMP sensor. If no pulsing signals are detected from the CMP 
sensor, a malfunction is detected and a DTC is stored. 

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

MONITOR DESCRIPTION CHART 

Enable Conditions 

ENABLE CONDITIONS 

Malfunction Threshold 

No signals from CMP sensor A are detected while signals from the CKP sensor are detected 352 times in 
succession. 

Diagnosis Details 

Conditions for illuminating the MIL 

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the 
PCM memory. 

Conditions for clearing the MIL 

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the 
diagnostic runs. 

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by 
disconnecting the battery. 

DTC P0344 (9): ADVANCED DIAGNOSTICS 

DTC P0344: CAMSHAFT POSITION (CMP) SENSOR INTERMITTENT INTERRUPTION 

Execution

Continuous

Sequence

None

Duration

-

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

 

State of the engine

Running

No active DTCs

P0335, P0339, P0344

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:03 PM

Page 78 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 55: Camshaft Position Sensor - Circuit Diagram 

General Description 

The camshaft position (CMP) sensor detects the intake camshaft timing and sends pulsing signals to the 
powertrain control module (PCM). The PCM determines the camshaft position according to the signals from 
the crankshaft position (CKP) sensor and the CMP sensor. If the number of pulsing signals from the CMP 
sensor during intervals between the CKP standard pulses is more or less than the proper number, a 
malfunction is detected and a DTC is stored. 

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

MONITOR DESCRIPTION CHART 

Enable Conditions 

ENABLE CONDITIONS 

Malfunction Threshold 

More or less than two CMP sensor pulses are detected during intervals between the CKP standard pulses. 

Execution

Continuous

Sequence

None

Duration

-

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

 

State of the engine

Running

No active DTCs

P0335, P0339, P0340

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:03 PM

Page 79 

© 2005 Mitchell Repair Information Company, LLC. 

This condition occurs at least 30 times. 

Diagnosis Details 

Conditions for illuminating the MIL 

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the 
PCM memory. 

Conditions for clearing the MIL 

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the 
diagnostic runs. 

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by 
disconnecting the battery. 

DTC P0385 (54): ADVANCED DIAGNOSTICS 

DTC P0385: CRANKSHAFT POSITION (CKP) SENSOR B NO SIGNAL 

Fig. 56: Crankshaft Position Sensor B - Circuit Diagram 

General Description 

Crankshaft position (CKP) sensor B consists of a rotor and a semiconductor that detects rotor position. 

 

2007 Acura RL 

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

  

me 

 

Friday, June 05, 2009 2:32:03 PM

Page 80 

© 2005 Mitchell Repair Information Company, LLC.