Power Solutions International

DTC 107

UnclassifiedElectrical

What This Code Means

MIL ON; Engine shutdown; DST displays MAP voltage less than the limit defined in calibration with the engine idling

Possible Causes

  • •MAP voltage less than 0.050 with throttle position greater than 2.0% and engine RPM less than 7000 (while engine cranking or running)
  • •Poor connection at sensor
  • •Faulty MAP sensor
  • •Intermittent Problem

Suggested Actions

  1. 1Perform the On-Board (OBD) System Check
  2. 2Troubleshoot DTC 642 or DTC 643 first if present
  3. 3Using a DMM, measure the voltage potential across 5ref1 and 5V rtn1 at connector to check if >4.7 VDC
  4. 4Jumper the MAP circuit to Vref (5 VDC) in connector on harness and check if DST displays MAP voltage of 4.7 VDC or greater
  5. 5Key off, disconnect wire harness header from ECM, carefully remove yellow lock from header at device output terminal, and check resistance between MAP input at ECM header and signal at device (ensuring no probe or object is inserted into terminals to prevent spreading pins)

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