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Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Engine Controls - Self-Diagnostics - 4.3L) >> Diagnostic Trouble Code Identification >> DTC P0102: MAF Sensor Circuit Low Frequency >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Isuzu Hombre. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostics II (OBD-II) System Check. See SELF-DIAGNOSTICS - INTRODUCTION article. Retrieve and record FREEZE FRAME and/or FAIL RECORDS data for each DTC set. After performing OBD-II system check, go to next step.
  2. Start engine. With engine at idle, use scan tool to read MAF value. If MAF value is less than 2 grams per second, go to step  4. If value is 2 grams per second or greater, go to next step.
  3. Turn engine off. Turn ignition on, engine off. Using scan tool, read and record FAIL RECORDS data. Operate vehicle within conditions noted in FAIL RECORD data. Using scan tool, read SPECIFIC DTC. If scan tool indicates DTC P0102 failed this ignition cycle, go to next step. If scan tool does not indicate DTC P0102 failed this ignition cycle, see DIAGNOSTIC AIDS .
  4. Check ENG 1 fuse (10-amp). If fuse is okay, go to next step. If fuse is faulty, go to step  11.
  5. Check for MAF sensor inlet screen blockage. Check for vacuum leaks at intake manifold, throttle body or EGR valve flange and pipes. Check for faulty, missing or incorrectly installed crankcase valve. Repair faulty conditions as necessary. After repairs, go to step  16. If no faulty conditions exist, go to next step.
  6. Turn ignition off. Disconnect MAF sensor harness connector. Turn ignition on, engine off. Using a DVOM, check voltage between MAF sensor harness connector signal circuit (Yellow wire) and battery ground. If voltage is not about 5 volts, go to step  10. If voltage is about 5 volts, go next step.
  7. Connect a test light between MAF sensor harness connector ignition feed circuit (Pink wire) and ground circuit (Black/White wire). If test light comes on, go to step  9. If test light does not come on, go to next step.
  8. Connect test light between MAF sensor harness connector ignition feed circuit (Pink wire) and battery ground. If test light comes on, go to step  12. If test light does not come on, go to step  13.
  9. Check for faulty connection at MAF sensor. Repair connection as necessary. After repairs, go to step  16. If connection is okay, go to step  14.
  10. Check MAF sensor signal circuit (Yellow wire) between VCM and MAF sensor for open or short. Repair signal circuit as necessary. After repairs, go to step  16. If signal circuit is okay, go to step  15.
  11. Check for short to ground in MAF sensor ignition feed circuit (Pink wire). Repair circuit as necessary and replace ENG 1 fuse (10-amp). After repair, go to step  16.
  12. Locate and repair open in the MAF sensor ground circuit (Black/White wire). After repairs, go to step  16.
  13. Locate and repair open MAF sensor ignition feed circuit (Pink wire). After repairs, go to step  16.
  14. Replace MAF sensor. After replacing sensor, go to step  16.
  15. Replace VCM. Program replacement VCM. See PROGRAMMING . After replacing VCM, go to next step.
  16. Using scan tool, select DTC, CLEAR INFO function. Start engine and allow it to reach operating temperature. Using scan tool, select DTC, SPECIFIC function and enter DTC P0102. Operate vehicle within conditions required to set DTC. If scan tool displays RAN AND PASSED, go to next step. If scan tool does not display RAN AND PASSED, return to step  2.
  17. Using scan tool, select Read and Record INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, diagnose affected DTCs. If no DTCs are displayed, system is okay.
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