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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (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 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. 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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