5A Fault Code 22 Coolant Sensor Circuit

*** UPDATED BY TSB #18-61-86

1. Connect diagnostic read-out tool to engine test connector.
2. Turn ignition switch Off, then disconnect coolant sensor electrical connector.
3. Enter system into sensor test mode 04. Display reading must be multiplied by 10 to determine actual reading.
4. If display indicates 00°, proceed to step B. 5B Coolant Sensor to Logic Module
5. If display indicates 260°, replace logic module.
NOTE: Before replacing the logic module make sure the wire of cavity No. 23 of the logic module black connector is not shorted to ground.