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.
...
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:
Shift Solenoid Valve Test,
Replacement, and Shift Solenoid
Wire Harness Replacement
1. Connect the HDS to the DLC (A) located under the
driver's side of the dashboard.
2. Turn the ignition switch to ON (II). Make sure the HDS
communicates with the PCM. If it does not go to the
...
Circuit Diagram
DRIVER'S UNDER-DASH
FUSE/RELAY BOX CONNECTOR N (16P)
Wire side of female terminals
DRIVER'S UNDER-DASH
FUSE/RELAY BOX CONNECTOR P (20P)
Wire side of female terminals
GAUGE CONTROL MODULE 3 ...
Knock Sensor Replacement
1. Remove the intake manifold (see page 9-4).
2. Disconnect the knock sensor connector (A).
3. Remove the knock sensor (B).
4. Install the parts in the reverse order of removal. ...