SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSUZUKI2009EQUATOR SPORT, 4D PICKUP, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (VQ40DE) - (4 OF 5)DTC P0117, P0118: ECT SENSORDIAGNOSIS PROCEDURE
2009 Suzuki Equator Sport, 4D Pickup, RWD

Diagnosis Procedure

2009 Suzuki Equator Sport, 4D Pickup, RWDSECTION Diagnosis Procedure
DIAGNOSIS PROCEDURE

Step Action YES NO
1  CHECK GROUND CONNECTIONS 
  1. Turn ignition switch OFF.
  2. Loosen and retighten three ground screws on the body. Refer to [POWER SUPPLY AND GROUND CIRCUIT CHECK ].
G06441283Courtesy of SUZUKI OF AMERICA CORP.

OK or NG 		 GO TO 2. Repair or replace ground connections.
2  CHECK ECT SENSOR POWER SUPPLY CIRCUIT 
  1. Disconnect engine coolant temperature (ECT) sensor harness connector.
G06441284G06441285Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 2. Turn ignition switch ON.
  2. 3. Check voltage between ECT sensor terminal 1 and ground with SDT or tester.
G06441284G06441285Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Voltage: Approximately 5V 
OK or NG 		 GO TO 3. Repair open circuit or short to ground or short to power in harness or connectors.
3  CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check harness continuity between ECT sensor terminal 2 and ECM terminal 67.

    Refer to WIRING DIAGRAM .

    Continuity should exist. 

  4. Also check harness for short to ground and short to power.

OK or NG 		 GO TO 4. Repair open circuit or short to ground or short to power in harness or connectors.
4  CHECK ENGINE COOLANT TEMPERATURE SENSOR 
Refer to [P0117, P0118 ECT SENSOR ].
OK or NG 		 GO TO 5. Replace engine coolant temperature sensor.
5  CHECK INTERMITTENT INCIDENT 
Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]		 INSPECTION END   
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.