Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 1992 >> B Series Truck 2WD L4-2184cc 2.2L 2200 2-bbl >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Coolant Temperature Sensor/Switch (For Computer) >> Description and Operation
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Coolant Temperature Sensor/Switch (For Computer): Description and Operation

PTC Heater System:






^ The Water Temperature Switch is an "ON / OFF" switch located in the bottom of the radiator.
^ It is "ON" at temperatures below 63°F (17°C), signalling the ECU to activate the carburetor PTC heater system.
pro multis · About Operation CHARM