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Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls - Self-Diagnostics - 3.2L & 3.5L) >> Diagnostic Trouble Code Identification >> DTC P0102: Mass Airflow (MAF) Sensor Circuit/Low Frequency >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Amigo, and 2000 Honda Passport. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic (OBD) System Check. See BASIC DIAGNOSTIC PROCEDURES article. Go to next step.
  2. Start engine and allow it to reach normal operating temperature. With engine at idle, monitor MAF FREQUENCY parameter on scan tool. If display is less than 1.6 g/s, go to next step. If display is 1.6 g/s or more, go to step  5.
  3. With ignition on, engine off, review and record FAILURE RECORDS data on scan tool. Operate vehicle within FAILURE RECORDS conditions. If scan tool indicates DTC P0102 FAILED THIS IGNITION, go to next step. If scan tool display is not as specified, see DIAGNOSTIC AIDS .
  4. Turn ignition off. Disconnect MAF sensor harness connector. Turn ignition on. Measure voltage between ground and MAF sensor signal circuit at MAF sensor harness connector. If reading is about 5 volts, go to next step. If reading is not about 5 volts, go to step  8.
  5. Connect test light between sensor ground circuit and voltage supply circuit at MAF sensor harness connector. If test light comes on, go to step  13. If test light does not come on, go to next step.
  6. Connect test light between ground and voltage supply circuit at MAF sensor connector. If test light comes on, go to step  12. If test light does not come on, go to next step.
  7. Check for poor connection at MAF sensor. Repair as necessary. Retest system. If connections are okay, go to step  11.
  8. Turn ignition off. Disconnect PCM harness connector related to MAF sensor circuit. Turn ignition on. Measure voltage between ground and MAF signal terminal at PCM harness connector. If less than 4 volts are present, go to next step. If 4 volts or more are present, go to step  11.
  9. Turn ignition off. Disconnect PCM harness connectors. Turn ignition on. Using a voltmeter, check MAF sensor signal circuit for short to voltage. Repair as necessary. Retest system.
  10. Turn ignition off. Disconnect PCM harness connectors. Check MAF sensor signal circuit between MAF sensor harness connector and PCM for an open, short to ground or short to sensor ground circuit. Repair as necessary. Retest system. If circuit is okay, go to step  13.
  11. Locate and repair open in sensor ground circuit between MAF sensor harness connector and PCM. Retest system.
  12. Locate and repair open in voltage supply circuit between MAF sensor harness connector and PCM. Retest system.
  13. Replace MAF sensor. Retest system. If DTC P0102 resets, replace and reprogram PCM. See PROGRAMMING . Retest system.
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