Dtc P0115: Ect Circuit - Suzuki Grand Vitara 2011 Manual

DTC P0115: ECT Circuit

NOTE
• Conditions for applying the fault finding procedure to stored faults:
– When an attempt is made to start the engine
– With the engine running
• If the fault is present:
– The coolant temperature: "Coolant Temp" on Data List of SUZUKI scan tool is fixed at 118.1 °C,
244.6 °F with engine running, 0.1 °C, 32 °F with engine stopping
– The preheating phase is greater than 10 seconds,
– The radiator fan is continuously operated,
– 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
CC0
CO1
Troubleshooting
Check the connections of the "C09-4" terminal of ECT sensor connector.
Check the ECM connections.
Repair if necessary.
Measure the resistance of the ECT sensor between "C09-1" and "C09-4" terminals of its connector.
Replace the sensor if its resistance is not approximately:
68780 – 82780 Ω at –40 °C, –40 °F
12338 – 12582 Ω at –10 °C, –14 °F
2140 – 2364 Ω at 25 °C, 77 °F
772 – 850 Ω at 50 °C, 122 °F
275 – 291 Ω at 80 °C, 176 °F
112 – 118 Ω at 110 °C, 230 °F
85 – 89 Ω at 120 °C, 248 °F
Check for the insulation, continuity and the absence of interference resistance on the connections:
• Between "C09-1" wire of ECT sensor connector and "C86-23" terminal of ECM connector
• Between "C09-2" wire of ECT sensor connector and "C86-11" terminal of ECM connector
Repair if necessary.
If the fault is still present, replace the ECT sensor.
Engine General Information and Diagnosis: For Diesel Engine Model 1A-300
Short circuit to vehicle body ground
Open circuit or short circuit to +12 V
Detecting condition
S6JB0A1124095