XL-7 Limited 4WD V6-2.7L (2002)
Engine Block Heater: Service and Repair
Removal
1. Disconnect negative cable at battery.
2. Drain coolant.
3. Remove strut tower bar, if equipped.
4. Remove right side exhaust manifold.
5. Disconnect engine block heater and remove engine block heater (1)
Installation
Reverse removal procedure for installation, noting the followings.
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Install engine block heater (1) in the direction as shown in the figure.
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Tighten engine block heater mounting bolt to specified torque.
a. Apply thread lock cement to block heater bolt (1).
"A": Thread lock cement 99000-32020
b. Tighten engine block heater mounting bolt to specified torque.
Tightening torque
Engine block heater mounting bolt (a): 11 Nm (1.1 kgf-m, 8.0 ft. lbs.)
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Use new exhaust manifold gasket.
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Tighten exhaust manifold mounting bolts and nuts to specified torque.
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Refill cooling system with coolant, front differential with gear oil, P/S system with specified fluid and engine with engine oil.
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Finally, start engine and check for engine coolant leaks and exhaust gas leakage.
Inspection
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Check continuity between terminal "a" and "c". If there is no continuity, replace it.
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Check that there is no continuity between terminal "a" or "b" and "c". If there is continuity, replace it.