Dtc P0235: Boost Pressure Sensor Circuit - Suzuki Grand Vitara 2011 Manual

1A-309 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P0235: Boost Pressure Sensor Circuit

CAUTION
!
This fault can result in a rapid and significant fouling of the diesel particulate filter.
NOTE
• Conditions for applying the fault finding procedure to stored faults:
The fault is declared present:
– When an attempt is made to start the engine
– With the engine running
• Use service wire for all operations on the ECM connectors.
• If the fault is present:
– The EGR function is inhibited.
– The turbocharging pressure value changes to safe mode: "Turbo Pressure" on Data List of
SUZUKI scan tool = 1000 hPa.
– The Injection warning light (gravity 1 warning light) is lit.
• Order of priority in the event of more than one fault:
Deal with fault "DTC P0641: Sensor Reference Voltage 1 Circuit: For Diesel Engine Model" first if it 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
CO0
CC1
D1
Troubleshooting for CO0: Open circuit or short circuit to vehicle body ground
Check the boost pressure sensor connections.
Check the ECM connections.
Repair if necessary.
Check the continuity and insulation from vehicle body ground of the following connections:
• Between "C76-3" wire of boost pressure sensor connector and "C86-42" terminal of ECM connector
• Between "C76-74" wire of boost pressure sensor connector and "C86-19" terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the boost pressure sensor.
Troubleshooting for CC1: Short circuit to +12 V
Check the boost pressure sensor connections.
Check the ECM connections.
Repair if necessary.
Check the continuity and insulation against +12 volts of the following connections:
• Between "C76-3" wire of boost pressure sensor connector and "C86-42" terminal of ECM connector
• Between "C76-14" wire of boost pressure sensor connector and "C86-45" terminal of ECM connector
• Between "C76-4" wire of boost pressure sensor connector and "C86-19" terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the boost pressure sensor.
Detecting condition
Open circuit or short circuit to vehicle body ground
Short circuit to +12 V
Inconsistency of signal
S6JB0A1124102