Engine Block Heater: Service and Repair

Removal
1. Disconnect negative (-) cable at battery.
2. Drain engine coolant.





3. Disconnect engine block heater connector and remove engine block heater (1).

Installation
Reference: "Engine Block Heater Inspection"
Reverse removal procedure for installation, noting the followings.





^ Install engine block heater (1) in the direction as shown in the figure.
^ Apply thread lock cement to block heater bolt (1).
"A": Thread lock 99000-32020





^ Tighten engine block heater bolt to specified torque.
Tightening torque
Engine block heater bolt (a): 7 Nm (0.7 kg-m, 5.5 ft. lbs.)

Inspection
1. Check continuity between terminal "a" and "c" by using ohmmeter. If there is no continuity, replace engine block heater.
2. Check that there is no continuity between terminal "a" and "b" or "c" and "b". If there is continuity, replace engine block heater.





3. Check no continuity between "c" and block heater body. If there is continuity, replace engine block heater.