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DTC P1103: MAF Sensor Inconsistent With Engine Speed (More Than Expected): Testing

NOTE: Record freeze frame data. Check for service bulletins and on-line information.
  1. Using scan tool, access PID/DATA MONITOR. Record PID data for ECT, TP and MAF. Warm engine until ECT PID is more than 158°F. Check MAF PID while engine speed is less than 2000 RPM. If MAF PID is more than 13.6 lbs. min., go to next step. If MAF PID is less than 13.6 lbs. min., problem is not present. Go to TROUBLE SHOOTING - NO CODES article.
  2. Turn ignition off. Disconnect MAF/IAT sensor harness connector. Check connector and terminals. If problem is not present, go to next step. If any problem is present, repair or replace as necessary. Go to step  4 .
  3. Disconnect PCM harness connector. PCM is mounted to passenger floor, behind glove box. Check PCM harness connector and PCM terminals. If problem is not present, go to next step. If any problem is present, repair or replace as necessary. Go to next step.
  4. Reconnect all components. Turn ignition on. Using scan tool, clear DTC. Warm engine until ECT PID is more than 158°F. Ensure MAF PID is less than 13.6 lbs. min. and engine speed is less than 2000 RPM. Recheck pending DTCs. If DTC P1103 is pending, replace PCM and go to next step. If DTC P1103 is not pending, go to next step.
  5. Perform after repair procedure. See AFTER REPAIR PROCEDURE  . If DTC is not present, testing is complete. If any DTC is present, go to appropriate test for diagnosis and repair.
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