MAZDA6 (2.3L)
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Continuity Inspection
Disconnect Power Steering Pressure (PSP) switch single pin harness connector. Connect ohmmeter between PSP switch terminal and ground. Start engine and operate at idle. Turn steering wheel from side to side and observe ohmmeter. Continuity should be present when steering wheel is turned. Continuity should not be present when steering wheel is in straight ahead position. If continuity is as specified, go to next step. If continuity is not as specified, replace PSP switch. - Open Circuit Inspection
Disconnect PCM 30-pin harness connectors. Check for continuity in Black/Blue wire between PSP switch harness connector terminal and PCM 30-pin harness connector terminal No. 1Z. If continuity is present, go to next step. If continuity is not present, repair open circuit in Black/Blue wire or replace wire harness. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. - Short Circuit Inspection
Check for continuity in Black/Blue wire between PSP switch harness connector terminal and ground. If continuity is present, repair short to ground in Black/Blue wire between PSP switch harness connector terminal and PCM 30-pin harness connector terminal No. 1Z.