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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0103: Mass Airflow Sensor Circuit High Frequency >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different variant/trim than selected.
  1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under DIAGNOSTIC SYSTEM TESTS. After performing powertrain diagnostic system check, go to next step.
  2. Turn ignition on. Using scan tool, review FREEZE FRAME and/or FAILURE RECORDS data and note parameters. Turn ignition off for at least 30 seconds. Start engine and operate vehicle within conditions required for this diagnostic to run, and as close to conditions recorded in FREEZE FRAME and/or FAILURE RECORDS as possible. Select DTC function, and then enter this DTC. If scan tool indicates that this test failed this ignition, go to next step. If scan tool does not indicate that this test failed this ignition, see DIAGNOSTIC AIDS .
  3. Turn ignition off. Locate and disconnect MAF sensor connector. See Figure. Start engine. Using scan tool, monitor MAF sensor frequency. If a MAF sensor frequency is zero Hz, go to step  5. If a MAF sensor frequency is not displayed, go to next step.
  4. Check MAF sensor harness for incorrect routing near secondary ignition wires or components, solenoids, relays or motors. Correct problem as necessary. After repairs, go to step  9. If routing is okay, go to step  6.
  5. Check for poor connection at MAF sensor connector terminals. Repair or replace as necessary. After repairs, go to step  9. If harness connector terminals are okay, go to step  7.
  6. Check for poor connections at PCM connectors. Repair as necessary. After repairs, go to step  9. If connections are okay, go to step  8.
  7. Replace MAF sensor. See REMOVAL, OVERHAUL & INSTALLATION - CARS article. After replacing sensor, go to step  9.
  8. Replace PCM. See REMOVAL, OVERHAUL & INSTALLATION - CARS article. After replacing PCM, go to next step.
  9. Using scan tool, clear DTCs. Turn ignition off for at least 30 seconds. Start engine and allow it to reach normal operating temperature. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, go to step  2.
  10. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no undiagnosed DTCs are displayed, system is okay.
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