General Motors Powertrain

111

UnclassifiedGeneral

What This Code Means

DST displays IAT voltage of 0.1 or less; DST displays IAT voltage of 4.95 or greater; Intermittent Problem

Possible Causes

  • •Faulty ECM
  • •Faulty ECM connection
  • •Faulty IAT sensor
  • •Faulty connection
  • •Open IAT ground circuit
  • •Open sensor signal circuit

Suggested Actions

  1. 1Check System Data Mode on DST
  2. 2Disconnect IAT sensor from harness
  3. 3Jumper IAT sensor signal to ground
  4. 4Jumper harness terminals together
  5. 5Key Off
  6. 6Key On

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