Do not remove the pressure cap from a hot engine. Wait until the coolant temperature is below 50°C [120°F] before removing the pressure cap. Heated coolant spray or steam can cause personal injury.
WARNING
Coolant is toxic. Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.
Drain the cooling system.
Use the following procedure in the ISB Series 6.7L Engines (CM2100 and CM2150 Common Rail Fuel Systems) Service Manual, Bulletin 4021578. Refer to Procedure 008-018 in Section 8.
Measure the resistance across the sensor signal and return terminals to be sure they are within the specifications listed in the table below. If the sensor ambient conditions change, the resistance values should be measured only after 2.5 minutes of the ambient change.
Use the following procedure in the ISB Series 6.7L Engines (CM2100 and CM2150 Common Rail Fuel Systems) Service Manual, Bulletin 4021578. Refer to Procedure 008-018 in Section 8.