Dtc P0190: Fuel Pressure Sensor Circuit - Suzuki Grand Vitara 2011 Manual

1A-301 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P0190: Fuel Pressure Sensor Circuit

NOTE
• Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after repeated engine starts or with the engine running.
• Use service wire for all operations on the controller connectors.
• If the fault is present:
– The engine will stop immediately.
– It is impossible to restart.
– The Red stop warning light (gravity 2 warning light) is lit.
• Priorities when dealing with a number of faults:
As a priority, deal with fault "DTC P0697: Sensor Reference Voltage 3 Circuit: For Diesel Engine
Model" if the fault is present or stored.
Wiring Diagram
For wiring circuit and connector number, refer to "A-5 Engine and A/C Control System Circuit Diagram (DSL) in
Section 9A".
Detecting Condition
Displaying on SUZUKI scan tool
CC0
CO1
D1
Troubleshooting for CC0: Short circuit to vehicle body ground
Check the fuel pressure sensor connectors.
Check the ECM connections.
Repair if necessary.
Check the continuity and insulation from vehicle body ground of the following connections:
• Between "C84-2" wire of fuel pressure sensor connector and "C86-32" terminal of ECM connector
• Between "C84-3" wire of fuel pressure sensor connector and "C86-48" terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the fuel pressure sensor with common rail referring to "Common Rail (High
Pressure Fuel Injection Rail) Removal and Installation: For Diesel Engine Model in Section 1G".
Troubleshooting for CO1: Open circuit or short circuit to +12 V
Check the fuel pressure sensor connectors.
Check the ECM connections.
Repair if necessary.
Check for continuity and insulation from the +12 V feed on the following connections:
• Between "C84-2" wire of fuel pressure sensor connector and "C86-32" terminal of ECM connector
• Between "C84-1" wire of fuel pressure sensor connector and "C86-46" terminal of ECM connector
• Between "C84-3" wire of fuel pressure sensor connector and "C86-48" terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the fuel pressure sensor with common rail referring to "Common Rail (High
Pressure Fuel Injection Rail) Removal and Installation: For Diesel Engine Model in Section 1G".
Detecting condition
Short circuit to vehicle body ground
Open circuit or short circuit to +12 V
Offset at minimum threshold
S6JB0A1124096