Dtc 562- battery voltage (vbat) low, Dtc 562- battery voltage (vbat) low -138 – JLG 450A_AJ Series II Service Manual User Manual

Page 178

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SECTION 3 - CHASSIS & TURNTABLE

3-138

– JLG Lift –

3121290

DTC 562- Battery Voltage (VBat) Low

• System voltage to ECM.

• Check Condition- Key on, Engine on.

• Fault Condition- Battery voltage to ECM less than x volts

while the engine is operating at y RPM or greater as
defined in the diagnostic calibration.

• Corrective Action(s)- Illuminate MIL and/or sound audible

warning or illuminate secondary warning lamp, disable
adaptive fueling correction for remainder of key cycle.

• Non-emissions related fault.

Battery voltage powers the ECM and must be within limits to
correctly operate throttle actuator, power supplies, and other
powered devices the ECM controls.

This fault sets if the ECM detects system voltage less than x
volts while the engine is operating at y RPM as defined in diag-
nostic calibration as the alternator should be charging the sys-
tem.

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