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Home >> Suzuki >> 2005 >> XL-7 EX, RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> H27 Engine >> Diagnostic Information and Procedures >> DTC P0117: Engine Coolant Temperature Circuit Low >> DTC Troubleshooting
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DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step Action Yes No
1 Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to "ENGINE AND EMISSION CONTROL SYSTEM CHECK  ".
2 Check ECT sensor and its circuit 
  1. Connect scan tool with ignition switch turned OFF.
  2. Turn ON ignition switch.
  3. Check engine coolant temp, displayed on scan tool.

Is 164 °C (327 °F) indicated? 

 Go to Step 3. Intermittent trouble. Check for intermittent referring to "INTERMITTENT AND POOR CONNECTION INSPECTION ".
3 Check wire harness 
  1. Disconnect ECT sensor connector with ignition switch turned OFF.
  2. Check engine coolant temp, displayed on scan tool.

Is -40 °C (-40 °F) indicated? 

 Replace ECT sensor. "GRN" circuit shorted to ground. If wire is OK, substitute a known-good ECM and recheck.
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