Honda Accord: Low Oil Pressure Indicator Circuit Troubleshooting (Open)

1 Connect the Honda Diagnostic System (HDS) to the data Jink connector (DIG) (see step 2 on page 11-3).

2. Turn the ignition switch to ON (ll).

3. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain control module (PCM). If It does not communicate, troubleshoot the DLC circuit (see page 11-181).

4. Check for DTCs (see page 11-3). If a DTC Is present, diagnose, and repair the cause before continuing with this test.

5. Check the OIL PRESSURE SWITCH in the PGM-FI DATA LIST with the HDS.

Is ON Indicated? YES-Replace the gauge control module (see page 22-351 ) . NO-Go to step 6.

6. Turn the ignition switch to LOCK (0).

7. Check the oil pressure switch (see page 8-9).

Is the oil pressure switch OK? YES-Go to step 8.

NO-Replace the oil pressure switch (see page 8-9).

8. Turn the ignition switch to ON (II), and jump the SCS line with the HDS, then turn the ignition switch to LOCK (0).

NOTE: This step must be done to protect the ECM/PCM from damage.

9. Disconnect ECM/PCM connector B (49P) and the oil pressure switch connector.

10. Check for continuity between ECM/PCM connector terminal B7 and the oil pressure switch connector.

ECM/PCM CONNECTOR B (49P)

Terminal side of female terminals

OIL PRESSURE SWITCH CONNECTOR

Wire side of female terminal

Is there continuity? YES-Update the ECM/PCM if it does not have the latest software (see page 11-203), or substitute a known-good ECM/PCM (see page 11-7), then recheck.

If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see page 11-204).

NO-Repair open in the wire between the oil pressure switch connector and ECM/PCM connector terminal B7.