Honda Accord: MIL Circuit Troubleshooting - PGM-FI System - Fuel and Emissions - Honda Accord MK8 2008-2012 Service ManualHonda Accord: MIL Circuit Troubleshooting

1. Turn the ignition switch to ON (II).

2. Do the gauge self-diagnostic function (see page 22-332).

Does the MIL indicator flash? YES

-Go to step 3.

NO

-Substitute a known-good gauge control module, and recheck. If the symptom/indication goes away with a known-good gauge control module, replace the original gauge control module (see page 22-351 ) . 3. Connect the HDS to the DLC (see page 11-3).

4. Check the SCS in the DATA LIST with the HDS.

Is a short indicated? YES

-Go to step 5.

NO

-Update the ECM/PCM if it does not have the latest software (see page 11-203), or substitute a known-good ECM/PCM (see page 11-7), then recheck.

If the symptom/indication goes away and the ECM/PCM was updated, troubleshooting is complete.

If the symptom/indication goes away and the ECM/PCM was substituted, replace the original ECM/PCM (see page 11-204).

5. Turn the ignition switch to LOCK (0).

6. Disconnect ECM/PCM connector A (49P), then disconnect the HDS.

7. Check for continuity between ECM/PCM connector terminal A32 and body ground.

ECM/PCM CONNECTOR A (49P)

Terminal side of female terminals


Terminal side of female terminals

Is there continuity? YES

-Repair short in the wire between the ECM/PCM (A32) and the DLC.

NO

-Update the ECM/PCM if it does not have the latest software (see page 11 -203), or substitute a known-good ECM/PCM (see page 11-7), then recheck.

If the symptom/indication goes away and the ECM/PCM was updated, troubleshooting is complete.

If the symptom/indication goes away and the ECM/PCM was substituted, replace the original ECM/PCM (see page 11-204).

    F-CAN Circuit Troubleshooting
    1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect ECM/PCM connector A (49P). 4. Measure the resistance between ECM/PCM connector terminals A3 and A4. ...

    DLC Circuit Troubleshooting
    NOTE: If you suspect the HDS or the HDS DLC cable may be the source of the communication probrem, verify that they are working properly by connecting them to a known-good, like vehicle and system, ...

    See also:

    Ignition Switch
    WARNING Removing the key from the ignition switch while driving locks the steering. This can cause you to lose control of the vehicle. Remove the key from the ignition switch only when p ...

    Timing Belt
    V6 models The timing belt should be replaced according to the Maintenance Minder TM. Replace the timing belt every 60,000 miles (100,000 km) if you regularly drive your vehicle in any of the ...

    Component Location Index
    ...