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Honda Fit/Jazz - A/C Signal Circuit Troubleshooting

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

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A/C Signal Circuit Troubleshooting

1.Turn the ignition switch OFF.

2.Disconnect the A/C pressure switch connector.

3.Turn the ignition switch ON (II).

4.Measure voltage between ECM/PCM connector terminals A24 and E28.

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Is there approx. 5V?


YES - Go to 5.


NO - Go to 12.


5.Turn the ignition switch OFF.

6.Reconnect the A/C pressure switch connector.

7.Turn the ignition switch ON (II).

8.Momentarily connect ECM/PCM connector terminals A24 and E18 with a jumper wire several times.

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Is there a clicking noise from the A/C compressor clutch?


YES - Go to 9.


NO - Go to 16.


9. Start the


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