Test E: Incorrect Oil Pressure Gauge Indication
- Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below driver's side of instrument panel, right of steering column. Turn ignition switch to RUN position. Using NGS tester, select instrument cluster active command OILGAUGE. Trigger, monitor and scroll OILGAUGE at 0%, 50% and 100%. Oil pressure gauge should indicate "L" at 0%, middle at 50% and "H" at 100%. If oil pressure gauge responds as specified, go to next step. If oil pressure gauge does not respond as specified, go to step 3 .
- Turn ignition switch to LOCK position. Disconnect oil pressure sensor harness connector C138. Oil pressure sensor harness connector C138 is located at left front of engine. Disconnect 20-pin instrument cluster harness connector C251. It may be necessary to remove instrument cluster for access to connector. See REMOVAL & INSTALLATION . Measure resistance in White/Red wire between oil pressure sensor harness connector C138 and instrument cluster harness connector C251 terminal No. 16. See Figure . Resistance should be 5 ohms or less. Measure resistance between ground and instrument cluster harness connector C251 terminal No. 16 (White/Red wire). Resistance should be more than 10 k/ohms. If both resistance readings are as specified, replace oil pressure sensor. If either resistance reading is not as specified, repair open or short to ground in White/Red wire between oil pressure sensor and instrument cluster. See WIRING DIAGRAMS .
- Disconnect all instrument cluster harness connectors. It may be necessary to remove instrument cluster for access to instrument cluster harness connectors. See REMOVAL & INSTALLATION . Inspect all instrument cluster harness connectors for loose, damaged or corroded terminals. If terminals are damaged, repair as necessary. If terminals are not damaged, reconnect all instrument cluster harness connectors. Ensure instrument cluster harness connectors are seated properly. If problem still exists, replace instrument cluster module.