Harness Diagnostics –1/1 E13 Ambient Air Temperature Sensor Open Circuit Ambient air temperature sensor open circuit. AH91621,0000169 –19–15MAR06–1/1 TM2361 (24JUN08) 9001-40-2 450DLC Excavator Operation and Tests 062608 PN=190 Air Conditioner Controller (ACF) Diagnostic Trouble Codes E12 — Cab Air Temperature Sensor Short Circuit 9001 40 2 Cab air temperature sensor short circuit. AH91621,0000168 –19–15MAR06–1/1 1 Connector Check Check harness connection to cab 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 2 Short Circuit Check Disconnect harness from cab 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 Air Conditioner Harness (W6) Wiring Diagram. (Group 9015-10.) NO: Cab air temperature sensor malfunction. – – –1/1