JLG 450A_AJ Series II Service Manual - Manual (Page 203)

SECTION 3 - CHASSIS & TURNTABLE
3121180 – JLG Lift – 3-153
3.23 DGC DIAGNOSTIC SUPPORT AND
TROUBLE CODE DEFINITIONS
This section defines diagnostics and recommended trou-
bleshooting procedures associated with EControls, Diesel
Governor Control (DGC), and Engine Control Module
(ECM) used on industrial engines.
Section Layout
This section is organized in the following manner:
DTC XXXX- Diagnostic Condition
Block Diagram of Circuit
External Hardware Input/Output- This identifies the hardware that either sends an input
to the ECM or is driven by and ECM output.
Check Condition- This defines what condition to troubleshoot the fault condition.
Fault Condition(s)- This identifies the condition(s) that set the fault.
Corrective Action(s)- This identifies the RECOMMENED corrective action(s) that the
ECM is generally programmed to perform. In some instances, the calibration
engineer(s) may choose to perform a different action.
Emissions or Non-emissions related fault
Text to identify the circuit of interest and its use for control.
Text to describe t he conditions that cause the fault to set.
DTC XXXX- Diagnostic Condition
Note: Helpful tips used to aid troubleshooting
Yes
No
Troubleshooting flow
chart