Power Solutions International

221

UnclassifiedEmissions

What This Code Means

TPS1 and TPS2 difference is more than the fault condition defined in the calibration

Possible Causes

  • •Intermittent problem
  • •Faulty throttle
  • •TPS (the sensor measuring over 0.1 volts) is shorted to voltage in the harness
  • •Faulty ECM
  • •Faulty connection at throttle

Suggested Actions

  1. 1Perform On-Board (OBD) System Check
  2. 2Enable DBW Test mode with key ON and engine OFF, then slowly depress FPP sensor (or type desired throttle opening % in the TPS Command box on DBW page for stationary applications) to check TPS1 and TPS2 difference
  3. 3Disconnect throttle from harness with key OFF, then turn key ON (engine OFF) in DBW Test mode and check if voltage for both TPS1 and TPS2 is < 0.100 VDC
  4. 4Connect TPS1 signal to the 5V reference at throttle connector while observing TPS1 voltage, repeat for TPS2, and check if DST displays both TPS1 and TPS2 voltage over 4.90 VDC when each is connected to 5Vref

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11631330DTC 11DTC 108DTC 221DTC 1153222223217237188238
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