The optical Coolant Level Sensor (CLS) can be used in place of the standard coolant level sensor
in applications where electrical isolation from the chassis is required. See Figure 3-37.
The optical CLS does not have a connection to the chassis but uses the angle of refraction of light emitted from the probe to determine if the sensor is in or out of the coolant. See Figure 3-38 for a schematic of the optical CLS harness.
NOTE:
This sensor is to be used with DDEC III or DDEC IV only.
The optical CLS connects to the engine interface harness quick disconnect connector on many multi-ECM engines. Refer to section 2.3.7.
The sensor part numbers are listed in Table 3-9.
