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Honda Fit/Jazz - Alternator FR Signal Circuit Troubleshooting

Online Honda Fit/Jazz 2002-2005 Workshop repair manual used by professionals.

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Snip from the Manual


Alternator FR Signal Circuit Troubleshooting

1.Disconnect the ALT 4P connector.

2.Turn the ignition switch ON (II).

3.Measure voltage between ECM/PCM connector terminals A24 and B13.

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Is there about 5 V?


YES - Go to 4.


NO - Go to 14.


4.Turn the ignition switch OFF.

5.Reconnect the ALT 4P connector.

6.Start the engine. Hold the engine at 3,000 rpm (min-1) with no load (in Park or neutral) until the radiator fan comes on, then let it idle.

7.Measure voltage between ECM/PCM connector terminals A24 and B13.

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Does the voltage decrease when the headlights and rear window defogger are


Honda Fit/Jazz 02-05 Workshop Manual    Back to all Manuals