E15 Coolant Temperature Sensor Open Circuit Coolant temperature sensor open circuit. AH91621,000016B –19–15MAR06–1/1 Harness Diagnostics –1/1 TM2361 (24JUN08) 9001-40-4 450DLC Excavator Operation and Tests 062608 PN=192 Air Conditioner Controller (ACF) Diagnostic Trouble Codes 1 Connector Check Check harness connection to ambient air temperature sensor and air conditioner and YES: Go to Short Circuit heater controller. Check. Are connectors clean and free from debris? Are pins straight and do they make a good NO: Repair or replace connection? connector or pins. 9001 – – –1/1 40 4 2 Short Circuit Check Disconnect harness from ambient air temperature sensor and air conditioner and YES:
Repair or replace heater controller. harness. See Cab Harness (W1) Wiring Check continuity between appropriate pins on air conditioner and heater controller Diagram, see Machine connector and machine ground. Harness (W2) Wiring Diagram, see Engine Is there continuity to ground? Interface Harness (W5) Wiring Diagram, and See Air Conditioner Harness (W6) Wiring Diagram. (Group 9015-10.) NO: Ambient air temperature sensor malfunction. – – –1/1 Air Conditioner Controller (ACF) Diagnostic Trouble Codes 1 Connector Check Check harness connection to ambient air temperature sensor and air conditioner and heater controller. Are connectors clean and free from debris?
Are pins straight and do they make a good connection? YES: Go to Short Circuit Check. NO: Repair or replace connector or pins. – – –1/1 9001 40 4 2 Short Circuit Check Disconnect harness from ambient air temperature sensor and air conditioner and heater controller. Check continuity between appropriate pins on air conditioner and heater controller connector and machine ground. Is there continuity to ground? YES: Repair or replace harness. See Cab Harness (W1) Wiring Diagram, see Machine Harness (W2) Wiring Diagram, see Engine Interface Harness (W5) Wiring Diagram, and See Air Conditioner Harness (W6) Wiring Diagram. (Group 9015-10.) NO: Ambient air temperature sensor malfunction.
– – –1/1 1 Connector Check Check harness connection to coolant temperature sensor and air conditioner and heater controller. Are connectors clean and free from debris? Are pins straight and do they make a good connection? YES: Go to Open Circuit Check. NO: Repair or replace connector or pins. – – –1/1