DTC Troubleshooting: P0118 (6)
DTC P0118:
 ECT Sensor 1 Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Check the ECT SENSOR 1 in the DATA LIST with the HDS.
Is about 4.95 V or higher indicated?
YES -
Go to Step 3 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the ECM.■
  1. Turn the ignition switch OFF.
  1. Disconnect the ECT sensor 1 2P connector.
  1. Connect ECT sensor 1 2P connector terminals No. 1 and No. 2 with a jumper wire.
  1. Turn the ignition switch ON (II).
  1. Check the ECT SENSOR 1 in the DATA LIST with the HDS.
Is about 4.95 V or higher indicated?
YES -
Go to Step 8 .
NO -
Go to Step 18 .
  1. Remove the jumper wire from the ECT sensor 1 2P connector.