Dtc P0033: Turbo Charger Bypass Valve Control Circuit Malfunction - Suzuki GRAND VITARA 2005 Service Manual

DTC P0033: Turbo Charger Bypass Valve Control Circuit Malfunction

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 after:
– Engine start.
– A road test.
– Output test "Boost pressure valve" on SUZUKI scan tool.
• If the fault is present:
– Turbocharging is no longer authorized.
– The EGR function is inhibited.
– The vehicle performance is reduced.
– The Injection warning light (gravity 1 warning light) is lit.
– If CC.0 is present, the Malfunction indicator light (MIL) will come on after three consecutive
driving cycles (starting +5 seconds + turn OFF ignition switch and wait 40 seconds.).
• Use service wire for all operations on the ECM connectors.
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
CC.1
CC.0
CO
1.DEF
Troubleshooting for CC.1: Short circuit to +12 V
Check the boost pressure control solenoid valve connections.
Check the ECM connections.
Repair if necessary.
Measure the resistance of the boost pressure control solenoid valve between its "C90-1" and "C90-2" terminals:
If the resistance displayed is not 14.7 – 16.1 Ω at 20 °C, 68 °F, replace the boost pressure control solenoid valve.
Check the continuity and insulation from the +12 V feed of the following connection:
• Between "C90-1" wire of boost pressure control solenoid valve connector and "C85-23" terminal of ECM
connector
Repair if necessary.
If the fault is still present, replace the boost pressure control solenoid valve.
Troubleshooting for CC.0: Short circuit to vehicle body ground and CO: Open circuit
Check the boost pressure control solenoid valve connections.
Check the ECM connections.
Repair if necessary.
Measure the resistance of the boost pressure control solenoid valve between its "C90-1" and "C90-2" terminals:
If the resistance displayed is not 14.7 – 16.1 Ω at 20 °C, 68 °F, replace the boost pressure control solenoid valve.
Check the continuity and insulation from vehicle body ground of the following connections:
• Between "C90-1" wire of boost pressure control solenoid valve connector and "C85-23" terminal of ECM
connector
• Between "C90-2" wire of boost pressure control solenoid valve connector and "E33-6" wire of main relay
mounting connector
Repair if necessary.
If the fault is still present, replace the boost pressure control solenoid valve.
Engine General Information and Diagnosis:
Detecting condition
Short circuit to +12 V
Short circuit to vehicle body ground
Open circuit
Internal electronic fault
1A-27
S5JB0B1104090