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2011-2014 Mustangs
Engine/Tuning
p0345
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<blockquote data-quote="basspro302" data-source="post: 16164581" data-attributes="member: 171674"><p>1. Check the Violet/Green (VT/GN) wire at the driver side intake Camshaft Position (CMP) sensor to verify it indicates battery voltage. Check the Green/White (GN/WH) wire to verify it shows to be a good ground. </p><p></p><p>2. Check the Yellow/Blue (YE/BU) wire for a reading of 5 volts with the sensor disconnected. If this circuit does not show 5.0 volts, check the circuit for an open wire or short to ground running between the PCM and sensor connections. </p><p></p><p>3. If the circuits appear to be OK, monitor the signal of the YE/BU wire with a labscope as the engine is running looking for a 0 to 5-volt square wave signal. If this signal shows an erratic or hashy signal with the engine running, check for potential sources of electrical interference from the alternator, a Coil-On-Plug (COP), etc and address as needed. </p><p></p><p>4. Check the look of the CMP sensor signal to the signal generated by the intake CMP sensor of bank 1. Note that an issue of the camshaft phaser could be the cause of the noted codes. Also verify camshaft timing is correct if there is any reason to believe that it may be incorrect.</p></blockquote><p></p>
[QUOTE="basspro302, post: 16164581, member: 171674"] 1. Check the Violet/Green (VT/GN) wire at the driver side intake Camshaft Position (CMP) sensor to verify it indicates battery voltage. Check the Green/White (GN/WH) wire to verify it shows to be a good ground. 2. Check the Yellow/Blue (YE/BU) wire for a reading of 5 volts with the sensor disconnected. If this circuit does not show 5.0 volts, check the circuit for an open wire or short to ground running between the PCM and sensor connections. 3. If the circuits appear to be OK, monitor the signal of the YE/BU wire with a labscope as the engine is running looking for a 0 to 5-volt square wave signal. If this signal shows an erratic or hashy signal with the engine running, check for potential sources of electrical interference from the alternator, a Coil-On-Plug (COP), etc and address as needed. 4. Check the look of the CMP sensor signal to the signal generated by the intake CMP sensor of bank 1. Note that an issue of the camshaft phaser could be the cause of the noted codes. Also verify camshaft timing is correct if there is any reason to believe that it may be incorrect. [/QUOTE]
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