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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–187 ES MONITOR DESCRIPTION If the output voltage transmitted by the knock sensor remains low or high for more than 1 second, the MONITOR STRATEGY TYPICAL ENABLING CONDITIONS TYPICAL MALFUNCTION THRESHOLDS Knock Sensor Range Check (Low voltage) P0327 and P0332: Knock Sensor Range Check (High voltage) P0328 and P0333: Related DTCs P0327: Knock sensor (Bank 1) open/short (Low voltage) Required Sensors/Components (Main) Knock sensor (Bank 1 and 2) Required Sensors/Components (Related) - Frequency of Operation Continuous Duration 1 second MIL Operation Immediate Sequence of Operation None Monitor runs whenever following DTCs not present None Battery voltage 10.5 V or more Time after engine start 5 seconds or more Knock sensor voltage Less than 0.5 V Knock sensor voltage More than 4.5 V |