Dtc Troubleshooting - Honda Accord 2008 Manual

07/11/02 09:02:37 61TA0000_110_0067

DTC Troubleshooting

DTC P0101: MAF Sensor Circuit Range/
Performance Problem
NOTE:
• Before you troubleshoot, record all freeze data and
any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
• If DTC P1128, P1129, P2228, and/or P2229 are stored
at the same time as DTC P0101, troubleshoot those
DTCs first, then recheck for DTC P0101.
1. Check for poor connections or damage to these
parts:
• PCV hose
• Intake air duct
• Air cleaner
• Purge (PCS) line
• Brake booster
• Brake booster hose
Are the parts OK ?
YES − Go to step 2.
NO − Repair or replace the damaged parts, then go
to step 15.
2. Check for damage or looseness at the air duct in
the air cleaner.
Is it OK ?
−
YES Go to step 3.
NO − Reconnect or replace the air duct in the air
cleaner, then go to step 15.
3. Check for a dirty air cleaner element.
Is it dirty?
YES − Replace the air cleaner element (see page
11-386), then go to step 15.
−
NO Go to step 4.
4. Turn the ignition switch to LOCK (0).
5. Turn the ignition switch to ON (II).
6. Check the MAF SENSOR in the DATA LIST with the
HDS.
Is there about 0.2 gm/ s or 0.5 V ?
−
YES Go to step 7.
NO − Go to step 13.
7. Start the engine.
8. Vary the engine speed between 2,000 rpm and
3,000 rpm.
9. Check the MAF SENSOR in the DATA LIST with the
HDS.
Does the reading change?
YES − Go to step 10.
NO − Go to step 13.
10. Hold the engine speed at 3,000 rpm without load
(A/T in P or N, M/T in neutral) until the radiator fan
comes on, then let it idle.
11. Test-drive the vehicle for several minutes in the
range of these recorded freeze data parameters:
• ENGINE SPEED
• VSS
• MAP SENSOR
• MAF SENSOR
12. Monitor the OBD STATUS for DTC P0101 in the
DTCs MENU with the HDS.
Does the screen indicate F AILED?
−
YES Go to step 13.
NO − If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the MAF
sensor and the ECM/PCM. If the screen indicates
NOT COMPLETED, go to step 11 and recheck.
ＴＡ０８ＡＥＡＫ７２１０００９０１０１ＦＡＡＴ３０
(cont'd)
11-67