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:

    ECT Sensor 1 Replacement
    1. Drain the engine coolant (see page 10-6). 2. Disconnect the ECT sensor 1 connector (A). 3. Remove ECT sensor 1 (B). 4. Install the parts in the reverse order of removal with a new O-ring ...

    Audio Disc Changer Removal/Installation
    With Navigation NOTE: • Put on gloves to protect your hands. • Take care not to scratch the dashboard and related parts. • Lay a shop towel under the parts when working on the ...

    Recirculation Control Motor Circuit Troubleshooting
    908-09 models 4-door with A/T and '10 model with AT 1. Check the No. 16 (7.5 A) fuse in the driver's under-dash fuse/ relay box. Is the fuse OK? YES-Go to step 2. NO-Replace the fuse, and re ...