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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1464: A/C Control Signal - Malfunction >> Detection Condition

Detection Condition

WARNING: This page is about a different car, the 2003 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1464 indicates A/C Control Signal (ACCS) input to PCM was high during self-test. When A/C cycling switch opens, PCM will turn off A/C clutch. The A/C cycling switch circuit to PCM provides a voltage signal which indicates when A/C is requested. When A/C demand switch is turned on, both the A/C cycling switch and high pressure contacts of A/C high pressure switch are closed, voltage is supplied to ACCS circuit at PCM. If ACCS signal is not received by PCM, PCM will not allow A/C to operate.

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