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QUICK START PHASE SENSOR WHEEL

WHY IT IS USING I
DIFFERENCE BETWEEN THIS WHEEL AND SINGLE TOOTH PHASE SENSOR WHEEL

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Have a 2003 cadillac cts...serpentine belt broke. Replaced it. Still won't start. Codes came up indicating crankshaft position sensor and camshaft position sensor. Replaced both. Cranks but won't start....


Inspect the reluctor wheel for signs of damage or looseness. Refer to Diagnostic Aids. If you find damage or looseness to the reluctor wheel, refer to Camshaft Replacement - Left Side in Engine Mechanical.
Did you find and correct the condition?

Diagnostic Aids
• The following conditions may cause this DTC to set:
- Camshaft reluctor wheel damage
- Incorrect sensor installation
- The sensor coming in contact with the reluctor wheel
- Excessive air gap between the reluctor wheel and the sensor magnet
- A cracked or damaged sensor
- Foreign material passing between the sensor and the reluctor wheel
• This DTC will set with an intermittent failure on the ignition 1 voltage circuit, the CMP sensor signal circuit, or the low reference circuit. A hard failure of any one of these circuits should set DTC P0342 or P0343.
• The CMP sensor low reference circuit is shared with the mass air flow (MAF) sensor, and the engine coolant temperature (ECT) sensor.

The camshaft position (CMP) sensor is a hall effect switching device that works in conjunction with a single tooth reluctor wheel used to determine the position of the bank 2 exhaust camshaft. The engine control module (ECM) expects the CMP sensor signal to be low, 0 volts, as the single tooth in the reluctor wheel passes the sensor, and high, 12 volts, during the remainder of the reluctor wheel rotation. The ECM supplies a 12-volt pull up voltage on the CMP sensor signal circuit. The ECM expects to see one transition from high to low every two crankshaft revolutions. This signal, when combined with the crankshaft position (CKP) sensor signal, enables the ECM to properly synchronize ignition timing, fuel delivery and knock control. As long as the CKP signal is available, the engine can start and run. The ECM will default to a non-sequential fuel injector operation even if there is no CMP sensor signal. If the ECM detects extra or missing CMP sensor signal transitions within a certain number of crankshaft revolutions, DTC P0341 sets.
The CMP sensor has the following circuits:
• Ignition 1 voltage circuit
• Low Reference circuit
• CMP sensor signal circuit

Feb 21, 2018 | Cadillac Cars & Trucks

1 Answer

08 pont grand prix 5.3 no start,no eng.light on but code reads po341


No start ???? No crank - no start or crank no start ? Meaning when you turn the key to start the vehicle what happens ? Does the starter engage an spin the engine or not ?

DTC P0341: Camshaft Position (CMP) Sensor Performance
The 4X camshaft position (CMP) sensor circuits consist of an engine control module (ECM) supplied 5-volt reference circuit, low reference circuit, and an output signal circuit. The CMP sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes between the peaks and valleys of a 4-tooth reluctor wheel attached to the camshaft. As each reluctor wheel tooth rotates past the CMP sensor, the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with two narrow, and two wide output pulses per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the CMP sensor output depends on the velocity of the camshaft. The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then used to sequence the ignition timing and fuel injection events for the engine. The ECM also uses CMP sensor output information to determine the camshaft relative position to the crankshaft, to control the CMP actuator if equipped, and for limp-home operation.

Do you know how to test engine sensors ? Videos on youtube .

Jan 30, 2018 | Cars & Trucks

1 Answer

06 Pontiac G6 2.4 I replaced the motor, started right up and ran great. Shut it off, now it won't start. I have no spark, and codes, po366 and po341 showed up. What's common to these 2 sensors?


DTC P0340: Intake CMP Sensor Circuit
DTC P0341: Intake Camshaft Position (CMP) Sensor Performance
DTC P0365: Exhaust Camshaft Position (CMP) Sensor Circuit
DTC P0366: Exhaust Camshaft Position (CMP) Sensor Performance

The five volt reference circuit .

The 4X camshaft position (CMP) sensor circuits consist of an engine control module (ECM) supplied 5-volt reference circuit, low reference circuit, and an output signal circuit. The CMP sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes of the teeth and slots of a 4-tooth reluctor wheel attached to the camshaft. As each reluctor wheel tooth rotates past the CMP sensor, the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with 4 varying width output pulses per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the CMP sensor output depends on the velocity of the camshaft. The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then used to determine the optimum ignition and injection points of the engine. The ECM also uses CMP sensor output information to determine the camshaft relative position to the crankshaft, to control camshaft phasing, and for limp-home operation.
Do you know what the five volt reference circuit is .

How to check the 5v reference circuit for short to ground Cadillac

Mar 17, 2017 | Pontiac Cars & Trucks

1 Answer

P0340 code


DTC P0340: Camshaft Position (CMP) Sensor Circuit
P0340 ?€¢
The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 seconds without a CMP sensor pulse.


OR


?€¢
The ECM detects that the engine has started, but did not received a CMP sensor pulse during the first engine revolution.


OR


?€¢
The ECM detects that the engine is running, but does not receive a CMP sensor pulse for 800 of 1,000 engine cycles.


The 4X camshaft position (CMP) sensor circuits consist of an engine control module (ECM) supplied 5-volt reference circuit, low reference circuit, and an output signal circuit. The CMP sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes of the teeth and slots of a 4-tooth reluctor wheel attached to the camshaft. As each reluctor wheel tooth rotates past the CMP sensor, the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with 4 varying width output pulses per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the CMP sensor output depends on the velocity of the camshaft. The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then used to determine the optimum ignition and injection points of the engine. The ECM also uses CMP sensor output information to determine the camshaft relative position to the crankshaft, to control camshaft phasing, and for limp-home operation.
You need a cam sensor or have wiring problem !

Apr 30, 2015 | Cars & Trucks

1 Answer

05 ram no speedo but senser good wireing good has p0501 code and no abs light on


Tell me how do you know that all speed sensors are good?
The ABS brake system uses 3 wheel speed sensors. A sensor is mounted to each front hub/bearings. The third sensor is mounted on top of the rear axle differential housing.
OPERATION The Wheel Speed Sensor consists of a magnet surrounded by windings from a single strand of wire. The sensor sends a small AC signal to the CAB. This signal is generated by magnetic induction. The magnetic induction is created when a toothed sensor ring (exciter ring or tone wheel) passes the stationary magnetic WSS.

saailer

May 08, 2014 | 2004 Dodge Ram 1500

1 Answer

My brakes seem to be making a stuttering noise when coming to a slow stop....brakes and rooters are new.....seems to be the abs system but not sure how to fix it.


Hi this is an ABS problem. Whats happening is one of the wheel speed sensors is giving a wrong
signal to the ABS system.
On each wheel hub there will be a toothed wheel which triggers the sensor on and off as it monitors each wheel speed.
So the problem could be a sensor malfunctioning (unplug each sensor in turn and use an ohm
meter across the two terminals the faulty one is the one with the different reading ).
the problem ould also be a toothed wheel rusted or debri between the teeth so a wrong signal
gets sent to the ABS system.
I have seen on another product the toothed wheels rusted so bad they cracked and were then loose on hub so free to rotate differently to the wheel.
A diagnostic check should be able to tell you which wheel the fault is on
I hope i have been able to help you
John ( South Wales UK )

Jun 02, 2011 | 2003 GMC Envoy

2 Answers

Brake and abs lights are on intermittentedly


you need to see what the abs code is for as it will turn on the red brake light.you need to know what this is to repair.check the brake fluid level in the master cylinder just in case thats all it is.

Apr 25, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

I have the ABS & the traction light on at the same time, are they on the same curcuit, what could be the problem ?


its a wheel sensor thats for sure ,on the front if its as traction light as well i suspect,either the toothed gear on one of the drive shafts has come loose or a sensor ,but not sure if this has a painted metal path on the back of the wheel bearing instead of the toothed wheel ,if a toothed gear they often come loose and quick tack weld fixes this ,checking the sensor is east ,disconnect it and take it off then connect a meter to the two wires and set it to the lowest milliamp setting and move a spanner over the end and you should see a flicker on the meter if its workinig ok

Dec 12, 2010 | 1998 Ford Windstar

1 Answer

Will crank but not start


Crank sensor may be bad. Crankshaft Position Sensor OPERATION Fig. 1: The CKP sensor trigger wheel rides on the front of the crankshaft. The missing tooth creates a fluctuation of voltage in the sensor 91194p63.jpg
The Crankshaft Position (CKP) sensor is a variable reluctance sensor that uses a trigger wheel to induce voltage. The CKP sensor is a fixed magnetic sensor mounted to the engine block and monitors the trigger or "pulse" wheel that is attached to the crank pulley/damper. As the pulse wheel rotates by the CKP sensor, teeth on the pulse wheel induce voltage inside the sensor through magnetism. The pulse wheel has a missing tooth that changes the reading of the sensor. This is used for the Cylinder Identification (CID) function to properly monitor and adjust engine timing by locating the number 1 cylinder. The voltage created by the CKP sensor is alternating current (A/C). This voltage reading is sent to the PCM, it is used to determine engine RPM, engine timing, and is used to fire the ignition coils. prev.gif next.gif

Aug 03, 2010 | 1997 Lincoln Continental

1 Answer

QUICK START PHASE SENSOR WHEEL


i'm not sure exactly what the question is but there is not tires with sensors sensors are always mounted on the rims by the valves but if you install a diferent wheel then the light monitoring the air pressure will come on

May 20, 2008 | 2008 Volvo S40

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