Dtc P0685: Main Relay Control Circuit; Dtc P0697: Sensor Reference Voltage 3 Circuit - Suzuki Grand Vitara 2011 Manual

1A-341 Engine General Information and Diagnosis: For Diesel Engine Model

DTC P0685: Main Relay Control Circuit

NOTE
• Conditions for applying the fault finding procedure to stored faults:
Only deal with this fault if this fault is stored.
• The main relay located on fuse box No.2.
• If the fault is present, 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
D1
D2
Troubleshooting
• Check the ECM connections.
Repair if necessary.
• Check the condition of the battery terminals making sure they are correctly tightened.
Check the condition of the main relay and its mounting.
Repair if necessary.
Check the following connection for continuity and for the absence of interference resistance:
• Between "E33-8" wire of main relay mounting connector and "C86-14" terminal of ECM connector
Repair if necessary.
If the fault is still present, substitute a known-good ECM and recheck.

DTC P0697: Sensor Reference Voltage 3 Circuit

CAUTION
!
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in "Electrical Circuit Inspection Procedure in Section 00".
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 EGR function is inhibited.
– Engine stops.
– The Red stop warning light (gravity 2 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
D1
D2
Detecting condition
Relay cut out too soon
Relay cut out too late
Detecting condition
Sensor reference voltage too low
Sensor reference voltage too high
S6JB0A1124129
S6JB0A1124130