July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Inspection

Check ECTS.

Ignition "OFF".
Disconnect ECT sensor connector.

Measure resistance between terminals "1" and "3" of the ECT sensor connector.

Specification:

TEMPERATURE AND RESISTANCE SPECIFICATIONS

Temperature (°C/°F)	0°C (32°F)	20°C (68°F)	40°C (104°F)	80°C (176°F)
Resistance (kΩ)	5.9	2.5	1.1	0.3
Voltage (V)	3.4~3.6	2.5~2.7	1.5~1.7	0.5~0.7

Fig 1: Measuring Resistance Between Terminals 1 And 3 Of ECT Sensor Connector

G07374097

Is the measured resistance within specifications?
YES
- Go to " 2 Check PCM" as below.
NO
- Check ECT sensor for contamination, deterioration, or damage. Substitute with a known-good ECT sensor and check for proper operation. If the problem is corrected, replace ECT sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Check PCM.
1. Ignition "OFF" & Engine "OFF".
2. Connect scantool and Ignition "ON".
3. Select simulation function on scantool.
4. Simulate voltage at terminal "3" of ECT sensor signal connector.
  
  Fig 2: Display - ECT Sensor Voltage Simulation
5. Does the signal value of ECT sensor change according to simulation voltage?
  YES
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known - good PCM and check for proper operation.
    If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.