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Home >> Mazda >> 1998 >> 626 ES, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (A/C-Heater System - Manual) >> Testing >> Pressure Switch

Pressure Switch

WARNING: This page is about a different car, the 1996 Mazda MX-6, 1996 Mazda 626, 1995 Mazda MX-6, and 1995 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect manifold gauge set. Ensure high-side pressure is 30-455 psi (2.1-32.0 kg/cm2 ). Disconnect pressure switch. Check continuity between Blue/Black wire and Green/Black wire terminals of pressure switch. Replace pressure switch if continuity does not exist.
  2. On 2.5L, check continuity between Black/Yellow wire and White/Red wire terminals. Continuity should exist with high-side pressure greater than 213 psi (15 kg/cm2 ). Continuity should not exist with high-side pressure less than 156 psi (11 kg/cm2 ). If continuity is not as specified, replace pressure switch.
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