Oil Pressure Sender Test
- Turn ignition on. Using scan tool on IPC function, check Diagnostic Trouble Codes (DTCs). If scan tool displays DTC 029, go to step 4). If scan tool does not display DTC 029, turn ignition switch to OFF position. Disconnect oil pressure sensor/switch connector.
- Connect 2 Red wires from Gauge Tester (J 33431) to connector terminals "A" (Tan/Black wire) and "B" (Black/White wire). Turn ignition on. Using scan tool IPC data list, select OIL PRESSURE. Set tester resistance dials to zero ohms, then to open circuit. If scan tool shows less than 2 psi at zero ohms, and 2-6 psi when in open circuit, check oil pressure switch connector for good contact. 3) If scan tool does not show zero psi at zero ohms, and 2-6 at open circuit, check Tan/Black wire and Black/White wire for a short to ground, open circuit, or high resistance. Check all connectors for good terminal contact. If all circuits are okay, replace instrument cluster.
- Turn ignition off. Disconnect oil pressure sensor/switch connector. Connect jumper wire between oil pressure sensor/switch harness connector terminal "A" (Tan/Black wire) and ground. Turn ignition on. If LOW OIL PRESSURE indicator comes on, check Black/White wiring for open circuit or high resistance. Check all connectors for good terminal contact. If all circuits are okay, replace oil pressure sensor/switch. If LOW OIL PRESSURE indicator does not come on, check Tan/Black wire for an open circuit or high resistance. Check all connectors for good terminal contact. If all circuits are okay, replace instrument cluster.