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Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Scan Tool Data List Circuit/System Testing 1. Ignition OFF, disconnect the EOP switch. 2. Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit and ground. If greater than 1 ohm, test the low reference circuit for an open/high resistance. If the 3. Ignition ON, install a 3-amp fused jumper wire between the signal circuit and the low reference circuit. Verify the scan tool Engine Oil Pressure Switch parameter is Low. If not Low, test the signal circuit of the EOP switch for an open/high resistance. If the 4. If all circuits test normal, test or replace the EOP switch. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Engine Oil Pressure Sensor and/or Switch Replacement Control Module References for the PCM replacement, setup and programming SYMPTOMS - DISPLAYS AND GAGES 1. Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. IMPORTANT: The following steps must be completed before using the symptom tables.
2007 Hummer H3 2007 ACCESSORIES & EQUIPMENT Displays and Gages - H3
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