Resistance Inspection

1. Remove the power supply tightening screw.
2. Use an ohmmeter to measure the resistance value between the terminals.

Caution: When inserting the testing probe into the power supply terminal, be careful not to touch the printed board.

Standard value:
Power supply - Ground 178.9 ±18 Ohm
Power supply - Engine coolant temperature gauge 54 ± 2.7 Ohm
Engine coolant temperature gauge - Ground 232.9 ± 23 Ohm

3. If within the standard value, the engine coolant temperature gauge is OK. If not within the standard value, replace the engine coolant temperature gauge.