RDX L4-2.3L Turbo (2008)
Oil Pressure Warning Lamp/Indicator: Testing and Inspection
Low Oil Pressure Indicator Circuit Troubleshooting (Short)
Low Oil Pressure Indicator Circuit Troubleshooting (Short)
1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC).
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the vehicle and the powertrain control module (PCM). If it doesn't, troubleshoot the DLC circuit.
4. Check for DTCs. If a DTC is present, diagnose, and repair the cause before continuing with this test.
5. Start the engine, select PGM-FI, and check the OIL PRESSURE SWITCH in the DATA LIST with the HDS.
Is "OFF" indicated?
YES-Replace the gauge control module
NO-Go to step 6.
6. Turn the ignition switch OFF.
7. Disconnect the oil pressure switch connector.
8. Start the engine, and check the OIL PRESSURE SWITCH in the DATA LIST with the HDS.
Is "OFF" indicated?
YES-Go to step 9.
NO-Go to step 10.
9. Check the oil pressure switch.
Is the oil pressure switch OK?
YES-Do the oil pressure test.
NO-Replace the oil pressure switch.
10. Turn the ignition switch ON (II), and jump the SCS line with the HDS, then turn the ignition switch OFF.
NOTE: This step must be done to protect the PCM from damage.
11. Disconnect PCM connector B (44P) and the oil pressure switch connector.
12. Check for continuity between the oil pressure switch connector and body ground.
Is there continuity?
YES-Repair a short in the wire between the oil pressure switch and the PCM.
NO-Update the PCM if it does not have the latest software, or substitute a known good PCM, then recheck. If the symptom/indication goes away
with a known-good PCM, replace the original PCM.
