Honda Civic. Manual — part 661

Does the screen indicate PASSED?

YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs
were indicated in step 25, go to the indicated DTC's troubleshooting.

NO -If the screen indicates FAILED, check for poor connections or loose
terminals at the fuel rail pressure sensor and the PCM, then go to step 1. If the
screen indicates EXECUTING, keep driving until a result comes on. If the
screen indicates OUT OF CONDITION, go to step 23.

DTC P0192: FUEL RAIL PRESSURE SENSOR CIRCUIT LOW VOLTAGE

1. Turn the ignition switch ON (II).
2. Check the FUEL RAIL PRESSURE SENSOR in the DATA LIST with the

HDS.

Is there about 0.23 V or less?

YES -Go to step 3.

NO -Intermittent failure, the system is OK at this time. Check for poor
connections or loose terminals at the fuel rail pressure sensor and the PCM.

3. Turn the ignition switch OFF.
4. Disconnect the fuel rail pressure sensor 3P connector.
5. Turn the ignition switch ON (II).
6. Check the FUEL RAIL PRESSURE SENSOR in the DATA LIST with the

HDS.

Is there about 0.23 V or less?

YES -Go to step 8.

NOTE:

Before you troubleshoot, record all freeze data and any on-
board snapshot, and review the general troubleshooting
information (see GENERAL TROUBLESHOOTING
INFORMATION ).

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX

NO -Go to step 7.

7. Measure voltage between fuel rail pressure sensor 3P connector terminals No.

1 and No. 3.

Fig. 8: Measuring Voltage Between Fuel Rail Pressure Sensor 3P
Connector Terminals No. 1 And 3

Is there about 5 V?

YES -Go to step 16.

NO -Go to step 12.

8. Turn the ignition switch OFF.
9. Jump the SCS line with the HDS.

10. Disconnect PCM connector C (44P).
11. Check for continuity between fuel rail pressure sensor 3P connector terminal

No. 2 and body ground.

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX

Fig. 9: Checking Continuity Between Fuel Rail Pressure Sensor 3P
Connector Terminals

Is there continuity?

YES -Repair short in the wire between the PCM (C10) and the fuel rail
pressure sensor, then go to step 18.

NO -Go to step 23.

12. Turn the ignition switch OFF.
13. Jump the SCS line with the HDS.
14. Disconnect PCM connector A (44P).
15. Check for continuity between fuel rail pressure sensor 3P connector terminal

No. 1 and PCM connector terminal A19.

Fig. 10: Checking Continuity Between Fuel Rail Pressure Sensor 3P
Connector Terminals

Is there continuity?

YES -Repair open in the wire between the PCM (A19) and the fuel rail
pressure sensor, then go to step 18.

NO -Go to step 23.

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX

16. Turn the ignition switch OFF.
17. Replace the fuel rail pressure sensor (see FUEL PRESSURE SWITCH

REPLACEMENT ).

18. Reconnect all connectors.
19. Turn the ignition switch ON (II).
20. Reset the PCM with the HDS.
21. Do the PCM idle learn procedure, refer to the ECM/PCM IDLE LEARN

PROCEDURE .

22. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0192 indicated?

YES -Check for poor connections or loose terminals at the fuel rail pressure
sensor and the PCM, then go to step 1.

NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC's troubleshooting.

23. Reconnect all connectors.
24. Update the PCM if it does not have the latest software (see UPDATING THE

PCM ), or substitute a known-good PCM (see SUBSTITUTING THE
PCM ).

25. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0192 indicated?

YES -Check for poor connections or loose terminals at the fuel rail pressure
sensor and the PCM. If the PCM was updated, substitute a known-good PCM
(see SUBSTITUTING THE PCM ), then recheck. If the PCM was
substituted, go to step 1.

NO -If the PCM was updated, troubleshooting is complete. If the PCM was
substituted, replace the original PCM, refer to the ECM/PCM
REPLACEMENT . If any other Temporary DTCs or DTCs are indicated, go
to the indicated DTC's troubleshooting.

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX