Low Oil Pressure Indicator Circuit Troubleshooting (Open)
|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 ECM/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.||Turn the ignition switch ON (II), select PGM-FI, and check the OIL PRESSURE SWITCH in the DATA LIST with the HDS.|
Is ‘‘ON'' indicated?
NO - Go to 6.
|6.||Check the oil pressure switch.|
Is the oil pressure switch OK?
YES - Go to 7.
|7.||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 engine control module (ECM)/powertrain control module (PCM) from damage.
|8.||Disconnect ECM/PCM connector B (44P) and the oil pressure switch connector.|
|9.||Check for continuity between ECM/PCM connector terminal B7 and the oil pressure switch connector.|
Is there continuity?
YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n
NO - Repair an open in the wire between the oil pressure switch and the ECM/PCM.n