Diplomat L6-225 3.7L VIN H 1-bbl (1983)
Charge Temperature Sensor: Description and Operation
Fig. 13a, Oxygen sensor & charge temperature switch locations. 6 cylinder engines.
The CTS, Fig. 13A, is used on six cylinder engines only and is located in the intake manifold No. 6 branch runner on six cylinder engines. When the
incoming air fuel mixture is below 60°F, the CTS will close, allowing no EGR timer function and no EGR valve operation. When incoming air fuel
mixture is above 60°F, the CTS will open allowing EGR timer to expire and the EGR valve to operate.
