Auto-Idle Does Not Work JC89288,000002C –19–29APR06–1/1 Auto-Idle Does Not Work Diagnostics Procedure –1/1 TM2361 (24JUN08) 9010-15-13 450DLC Excavator Operation and Tests 062608 PN=283 Diagnostic Information 2 Air filter Check Check for plugged air filter. Was filter plugged? YES: Clean or replace elements. NO: Go to Electrical Check. (Group 9010-15.) – – –1/1 3 Electrical Check • Check to make sure temperature gauge is working properly. • Check engine coolant temperature sensor. Are components operating properly? YES: Go to Fan Drive System Check. NO: Repair or replace parts as necessary and retest. – – –1/1 4 Fan Drive System Check Check fan drive system for operating speed.
See Fan Drive Pump Servo Piston Minimum Flow Test and Adjustment. (Group 9025-25.) See Fan Drive Pump Servo Piston Maximum Flow Test and Adjustment. (Group 9025-25.) See Fan Drive Pump Flow Rate Test and Adjustment. (Group 9025-25.) See Fan Drive Pump Torque Control Test and Adjustment. (Group 9025-25.) Is fan drive system operating at proper speeds? NO: Adjust and repair or replace parts as necessary and retest. – – –1/1 9010 15 13 1 Check Engine Speed Check that engine speed is set higher than 1200 rpm (auto-idle speed). YES: Engine speed is above Auto-Idle speed: Go to Active DTC Test. NO: Set engine speed above 1200 rpm.
– – –1/1 2 Active DTC Test Check for Diagnostic Trouble Codes (DTCs). See Reading Diagnostic Trouble Codes With Monitor Display. (Group 9015-20.) Does monitor display any active DTCs? NO: No active DTCs present: Go to Travel Pressure Sensor Check. YES: Diagnose active DTCs. – – –1/1