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Home › Saturn › 2006 › Ion Red Line › Repair and Diagnosis › External Pages › Different car › Section 249 (Engine Controls - 2.4L - DTC P0010 To DTC P0341) › DTC P0102 or P0103 › Component Testing

Component Testing

WARNING: This page is about a different car, the 2006 Saturn Ion 3. However, it is still accessible from the selected car via links, so may be relevant.

To determine if the ECM can properly process the MAF sensor frequency signal, connect the J 38522  to the vehicle as follows:

  1. Turn OFF the ignition.
  2. Connect the battery voltage supply, and ground the black lead.
  3. Connect the red lead to the signal circuit of the MAF sensor.
  4. Set the Duty Cycle switch to Normal.
  5. Set the Frequency switch to 5 K.
  6. Set the Signal switch to 5 V.
  7. Start the engine.
  8. Observe the MAF Sensor parameter for the correct range of 4,950-5,025 Hz.
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