Alternator Fr Signal Circuit Troubleshooting - Honda Accord 2008 Manual

07/11/02 09:17:09 61TA0000_110_0337

Alternator FR Signal Circuit Troubleshooting

1. Start the engine, and let it idle.
2. Monitor the ALTERNATOR in the DATA LIST with
the HDS.
3. Check if the indicated percentage varies when the
headlight switch is turned on.
Does the percentage vary?
YES
NO −
4. Turn the headlight switch off and ignition switch to
LOCK (0).
5. Jump the SCS line with the HDS.
6. Disconnect the alternator 4P connector.
7. Disconnect ECM/PCM connector B (49P).
8. Check for continuity between ECM/PCM connector
terminal B47 and body ground.
＊０１
Is there continuity?
YES
PCM (B47) and the alternator.
−
NO
latest software (see page 11-231), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-232).
ＴＡ０８ＡＥ４Ａ２０３３６１１２９３１ＦＡＡＴ００
− The alternator signal circuit is OK.
Go to step 4.
ECM/PCM CONNECTOR B (49P)
ALTF (WHT/RED)
Terminal side of female terminals
− Repair short in the wire between the ECM/
Update the ECM/PCM if it does not have the
11-337