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Turbocharger Control Shutoff Valve Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2355 PID: SPN: 2792 FMI: 3/3 LAMP: Amber SRT: |
VGT Air Control Shutoff Valve Circuit – shorted high. Open circuit or high signal voltage detected at the turbocharger control shutoff valve circuit. |
Turbocharger control shutoff valve will either remain open or closed. If open, vehicle air will bleed off through turbocharger control valve over time with engine shut off. If closed, no air will be delivered to turbocharger control valve. |
 Turbocharger Control Shutoff Valve Circuit
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Circuit Description
The turbocharger control shutoff valve controls the flow of vehicle brake air to the turbocharger control valve. When the keyswitch is in the ON position, the ECM commands the turbocharger control shutoff valve open, allowing vehicle air to pass through to the turbocharger control valve. When the keyswitch is in the OFF position, the ECM commands the turbocharger control shutoff valve closed shutting off the flow of vehicle air to the turbocharger control valve. This also prevents vehicle brake air from bleeding down through the turbocharger control valve while the vehicle is not in use.
Component Location
The turbocharger control shutoff valve is located on the intake side of the engine below the air compressor. Refer to Section E for a detailed component location view.
Shop Talk
Possible causes of this fault code include:
- Open circuit in the engine harness signal circuit, connectors, or shutoff valve
- Signal circuit short to voltage source in the engine harness.
Refer to Troubleshooting Fault Code t05-2355
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