Test 70B - Open Oil Pressure Switch Sense Circuit
NOTE:
Perform TEST 58A
before proceeding with this test. For connector terminal ID, see CONNECTOR IDENTIFICATION
. For wiring schematics, see WIRING DIAGRAMS
in this article. Perform TEST VER-1 - VERIFICATION PROCEDURE
after each repair.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.
- Disconnect oil pressure switch connector, located next to oil filter. Connect jumper wire between ground and terminal No. 2 (Gray wire) on oil pressure switch connector. If oil pressure warning lamp illuminates, replace oil pressure switch. If oil pressure warning lamp does not illuminate, go to next step.
- Leave jumper wire connected. Disconnect instrument cluster Gray connector. Using scan tool in ohmmeter mode, measure resistance at terminal No. 5 (Gray wire) on instrument cluster Gray connector. If resistance is 5 ohms or greater, repair open Gray wire. If resistance is less than 5 ohms, go to next step.
- Remove and inspect oil pressure warning lamp. Replace lamp if necessary. If lamp is okay, repair or replace instrument cluster as necessary. See appropriate INSTRUMENT PANEL article in the ACCESSORIES & ELECTRICAL section.