Honda 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
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.
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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:
Symptom Troubleshooting Index
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Stall Speed Test
1. Wake sure the transmission fluid is filled to the proper
level (see page 14-191).
2. Apply the parking brake, and block all four wheels.
3. Connect the HDS to the DLC (A) located under the
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Safe Driving
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