P0327 Diagnostic Trouble Code Discussion for February 2018
Knock Sensor 1 Circuit Low Voltage (Bank 1)
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| Help Request | Posted | |
| 2000 GMC K2500 Sierra SL 5.7L No Start VIN: 1GTGK24R3Y P0327: Knock Sensor Circuit Low Voltage (Bank 1). Ignition system has no spark, coil checked good, 12V on ckt 439 to coil good (verified, not ghost V), good square wave to VCM on ckt 573, good square wave on ckt 423 from VCM to ICM, ground for ICM(ckt 451 good). Primary signal waveform from ICM to ignitio... |
February 24, 2018 |
