Dtc P0641: Sensor Reference Voltage "A" Circuit / Open Malfunction - Suzuki GRAND VITARA 2005 Service Manual

1A-72 Engine General Information and Diagnosis:

DTC P0641: Sensor Reference Voltage "A" Circuit / Open Malfunction

CAUTION
!
• This fault may appear if the wiring harness has been damaged.
Follow the procedure described in "Electrical Circuit Inspection Procedure: in Section 00 in related
manual".
• This check enables the condition and the conformity of the engine wiring harness to be checked.
NOTE
• Conditions for applying the fault finding procedure to stored faults:
The fault is declared present following a road test or after attempting to start the engine several
times.
• If the fault is present:
– The cruise control / speed limiter function is deactivated.
– Turbocharging is disabled.
– Engine speed is restricted.
– The Injection warning light (gravity 1 warning light) is lit.
• 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
1.DEF
2.DEF
Detecting condition
Sensor reference voltage too low
Sensor reference voltage too high
S5JB0B1104126