JLG 460SJ Service Manual - Manual (Page 230)

SECTION 3 - CHASSIS & TURNTABLE
3-178 – JLG Lift – 3120895
DTC 563- Battery Voltage (VBat) High
• System voltage to ECM
• Check Condition- Key on, Engine Cranking or Running
• Fault Condition- Battery voltage to ECM greater than x
volts while the engine is running as defined in the diag-
nostic calibration
• Corrective Action(s)- Illuminate MIL and/or sound audi-
ble warning or illuminate secondary warning lamp, dis-
able adaptive fueling correction for remainder of key
cycle
• Non-emissions related fault
The battery voltage powers the ECM and must be within
limits to correctly operate throttle acutator, power sup-
plies, and other powered devices that the ECM controls.
This fault will set if the ECM detects system voltage
greater than x volts while the engine is running or cranking
as defined in the diagnostic calibration.