DTC Troubleshooting: P1058 (179-6)

DTC P1058:  Fuel Rail Pressure Control Valve Circuit Shorted to Ground

1.Turn the ignition switch ON (II).

2.Clear the DTC with the HDS.

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

Is DTC P1058 indicated?


YES - Go to 4.


NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the fuel pressure control valve and the ECM.n


4.Turn the ignition switch OFF, and wait 30 seconds.

5.Disconnect the fuel pressure control valve 2P connector.

6.At solenoid side, measure resistance between fuel pressure control valve 2P connector terminals No. 1 and No. 2.

 

Is there about 3.5 W at room temperature?


YES - Go to 7.


NO - Go to 9.

7.Disconnect ECM connector No. 1 (96P).

8.Check for continuity between fuel pressure control valve 2P connector terminal No. 1 and body ground.

 

Is there continuity?


YES - Repair short in the wire between the fuel pressure control valve and ECM connector No. 1 terminal No. 79, then go to 10.


NO - Go to 14.


9.Replace the fuel supply pump assembly.

10.Reconnect all connectors.

11.Turn the ignition switch ON (II).

12.Reset the ECM with the HDS.

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

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P1058 is indicated, check for poor connections or loose terminals at the fuel pressure control valve and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


NO - Troubleshooting is complete.n

14.Update the ECM if it does not have the latest software, or substitute a known-good ECM.

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

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P1058 is indicated, check for poor connections or loose terminals at the fuel pressure control valve and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


NO - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM.n