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Re: Help Honda ECU says A/C ON BUT NO A/C
Posted to HVAC Forum on 1/27/2018 2 Replies

According to your information 1 Mpa (vacuum)converted to psi (atmospheric )equal to 145 .

So you reading is normal . Readings from the A/C pressure switch Below 28psi or above 213 psi will command the PCM to deactivate the A/C and FANS to operate . Login to read more.

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