JLG 740AJ Service And Maintenance Manual Download

Page: 198 / 582

SECTION 3 - CHASSIS & TURNTABLE

3-146

3121160

311

Injector Driver #1 Open (2.5L)

This fault will set if the EPM detects low feedback voltage on the internal injector while the injector
drive circuit is in the off-state and battery voltage is greater than 9 volts.

312

Injector Driver #1 Shorted (2.5L)

This fault will set if the EPM detects 10 injector firings with the internal driver sense voltage greater
than 4 volts while the injector is in the on-state and battery voltage is less than 16 volts.

313

Injector Driver #2 Open (2.5L)

This fault will set if the EPM detects low feedback voltage on the internal injector while the injector
drive circuit is in the off- state and battery voltage is greater than 9 volts.

314

Injector Driver #2 Shorted (2.5L)

This fault will set if the EPM detects 10 injector firings with the internal driver sense voltage greater
than 4 volts while the injector is in the on-state and battery voltage is less than 16 volts.

315

Injector Driver #3 Open (2.5L)

This fault will set if the EPM detects low feedback voltage on the internal injector while the injector
drive circuit is in the off-state and battery voltage is greater than 9 volts.

316

Injector Driver #3 Shorted (2.5L)

This fault will set if the EPM detects low feedback voltage on the internal injector while the injector
drive circuit is in the off-state and battery voltage is greater than 9 volts.

321

Injector Driver #4 Open (2.5L)

This fault will set if the EPM detects 10 injector firings with the internal driver sense voltage greater
than 4 volts while the injector is in the on-state and battery voltage is less than 16 volts.

322

Injector Driver #4 Shorted (2.5L)

This fault will set if the EPM detects 10 injector firings with the internal driver sense voltage greater
than 4 volts while the injector is in the on-state and battery voltage is less than 16 volts.

351

Fuel Pump Loop Open or High Side Short To Ground

This fault will set if the EPM detects Fuel Pump high-side on-state voltage less than 4 volts while bat-
tery voltage is greater than 8 volts. When this fault occurs, the MIL light will illuminate and the engine
will shut down.

352

Fuel Pump High Side Shorted To Power

This fault will set if the EPM detects Fuel Pump high-side voltage greater than 4 volts while the pump
should be off and the battery voltage is less than 16 volts. When this fault occurs, the MIL light will illu-
minate and the engine will shut down.

411

Coil Driver #1 Open (2.5L)

This fault will set if the EPM detects 10 coil firings which require the adaptive dwell to be greater than
allowed with the battery voltage above 11 volts.The purpose of this fault is to detect an open or high
impedance circuit to the coil, or an open primary coil.

412

Coil Driver #1 Shorted (2.5L)

This fault will set if the EPM detects 10 coil firings in which the adaptive dwell is less allowed and bat-
tery voltage is less than 16 volts.The purpose of this fault is to detect a short to ground in the harness, or
internally to the primary coil.

413

Coil Driver #2 Open (2.5L)

This fault will set if the EPM detects 10 coil firings which require the adaptive dwell to be greater than
allowed with the battery voltage above 11 volts. The purpose of this fault is to detect an open or high
impedance circuit to the coil, or an open primary coil.

414

Coil Driver #2 Shorted (2.5L)

This fault will set if the EPM detects 10 coil firings in which the adaptive dwell is less than allowed and
battery voltage is less than 16 volts. The purpose of this fault is to detect a short to ground in the har-
ness, or internally to the primary coil.

511

FPP1 High Voltage

This fault will set if voltage is over 4.8 volts at any operating condition while the key is on. If the voltage
exceeds 4.8, then FPP1 is considered to be out of specifications. At this point the EPM does not have a
valid signal, and must therefore enforce the low rev limit and Power Derate (level 1). When these are
enforced the maximum throttle position is 50% and the maximum engine speed is 1600 RPM. The
Low Rev Limit is enforced for the remainder of the key-on cycle. Rev limit is still enforced if the active
fault is no longer present; the MIL light will flash at 2 Hz for the remainder of the key-on cycle. This is a
reminder that the Low Rev Limit is still enforced.

JLG 740AJ, Service And Maintenance Manual

Search results

Summary of Contents for 740AJ

Reviews:

Related manuals for 740AJ

Brands by name

Popular brands