JLG 600SC_660SJC Service Manual User Manual
Page 179
Advertising
SECTION 6 - TURNTABLE
3121157
– JLG Lift –
6-33
Does DST display ECT
voltage of 4.9 VDC or
greater?
· Key Off
· Disconnect ECT sensor from harness
· Key On, Engine Off
· System Mode = “Stopped”
· Sensor signal circuit shorted to ground,
check wire harness for ground short
· Faulty ECM
· Faulty ECT
Sensor
Yes
No
Does DST display an ECT
voltage less the limit
defined in calibration?
· Intermittent Problem
Yes
No
· Key On, Engine Running
· System Mode = “Running”
Advertising