Malfunction Indicator Lamp: Service and Repair
ECM/PCM (MIL) RESET PROCEDUREI. How to Begin Troubleshooting.
^ When the Malfunction Indicator Lamp (MIL) has been reported on, or there is a driveability problem, use the appropriate procedure below to diagnose and repair the problem.
A. When the MIL has come on:
1. Connect the Honda PGM tester or an OBD II scan tool to the 16P data link Connector (DLC) located near the left kick panel.
2. Turn the ignition switch ON (Position II).
3. Check the Diagnostic Trouble Code (DTC) and note it. Also check and note the freeze frame data.
NOTE:
^ See the OBD II scan tool or Honda PGM Tester user's manuals for specific operating instructions.
^ The scan tool or tester can read the Diagnostic Trouble Codes (DTCs), freeze frame data, current data and other Engine Control Module (ECM)/Powertrain Control Nodule (PCM) data.
^ Freeze data indicates the engine conditions when the fist malfunction. misfire or fuel trim malfunction was detected. It can be useful information when troubleshooting.
B. When the MIL has not come on, but there is a driveability problem refer to Symptom Chart. Testing and Inspection
C. DTCs will be indicated by the blinking of the Malfunction Indicator Lamp (MIL) with the SCS service connector connected. Connect the SCS service connector to Service Check Connector as shown. (The 2P service Check Connector is located under the dash on the passenger's side of the vehicle.) Turn the ignition switch ON (Position II).
II. Engine Control Module (ECM)/Powertrain Control Module (PCM) Reset Procedure.
NOTE: Resetting the ECM/PCM will erase any stored DTCs and any freeze data. It will also restart all readiness code monitors.
Either of the following actions will reset the ECM/PCM.
^ Use the OBD II scan tool or Honda PGM Tester to clear the ECM's/PCM's memory.
NOTE: See the OBD II scan tool or Honda PGM Tester user's manuals for specific operating instructions.
^ Turn the ignition switch OFF. Remove the BACK UP (7.5 A) fuse from the under-hood fuse/relay box for 10 seconds.
NOTE: Removing the BACK UP (7.5A) fuse cancels the clock and the radio presets. Make note of the customers so you can reset them.
III. Final procedure (this procedure must be done after any troubleshooting).
1. Remove the SCS service connector is connected and there are no DTCs stored in the ECM/PCM, the MIL will stay on when the ignition switch is turned ON (Position II).
NOTE: If the SCS service connector is connected and there are no DTCs stored in the ECM/PCM, the MIL will stay on when the ignition switch is turned ON (Position II).
2. Do the ECM/PCM Reset Procedure.
3. Turn the ignition switch OFF.