V70 XC AWD L5-2.4L Turbo VIN 56 B5254T (1998)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
JA14 Replacing Engine Coolant Temperature (ECT) Sensor:
Drain off coolant
Remove thermostat housing (two TORX 40 screws). Disconnect connector.
Disconnect terminal pins from connector (see image) in order to thread the wiring through a ring wrench.
Remove temperature sensor and replace.
Assemble in reverse order.
CAUTION: Do not forget to top up coolant. Then run engine to normal operating temperature and check coolant level.