AUXILIARY POWERTRAIN CONTROL MODULE (APCM)
(IF EQUIPPED)
Your vehicle may be equipped with an auxiliary PCM. It has the following
features:
RPM control
This feature is used for elevating the
engine's idle speed. Rpm control can
be activated from inside the vehicle
and can be programmed to activate
automatically upon engine start-up.
Programmable speed presets range
from 1300±2500 rpm. This is the
recommended method of elevating
idle speed for PTO applications.
Charge Protect
This feature is used for maintaining
battery charge. In ªCharge
Protectionº mode, the battery
voltage is monitors and the engine
idle speed is increased so the
battery charge is maintained as
required. Charge Protection can be
activated from inside the vehicle
and programmed to activate
automatically upon engine start-up.
LCD screen
Displays current engine speed and
battery voltage.
RPM
CONTROLCHARGE
PROTECTPOWER
RPM
CONTROLCHARGE
PROTECTPOWER
RPM
CONTROLCHARGE
PROTECTPOWER
Driving tips
17
IF THE ENGINE WON'T CRANK
Turn on the headlights. If the lights are dim, do not go on at all or if
when the ignition is turned to START the lights become dim or go out,
the battery connections may be loose or corroded, or the battery may be
discharged. If there is a clicking or stuttering sound coming from the
engine compartment when you turn the key to START, this may also
indicate a loose or corroded battery connection.
Check the battery connections at the battery posts, cable connection to
the engine grounding point and at the starter relay terminals. Also, make
sure the relay bracket is securely fastened to its mounting surface.
If the starter relay clicks, but the starter does not crank, check the
connections at the starter terminal. If a discharged battery is suspected,
have it checked and corrected.
²For vehicles with manual transmissions, the clutch pedalmustbe fully
depressed in order for the starter to operate.
²For vehicles with automatic transmissions, the gearshift lever must be
in Park or Neutral in order for the starter to operate.
²Try operating the starter switch several times. Should the switch be
corroded, this operation may clean the contacts or make the switch
temporarily operable until you can reach the dealer.
²If all electrical connections are tight and you need assistance to start,
see ªJump Starting Your Vehicleº in theStartingchapter.
IF ENGINE CRANKS BUT WON'T START
Prolonged starter cranking (in excess of 30 seconds) could cause
damage to the starter motor.
²Check the fuel gauge. You may be out of fuel. If the gauge shows that
there is fuel in the tank, the trouble may be in the electrical system or
the fuel system. If equipped with an auxiliary tank, be sure that the
tank control switch is set for the tank with fuel and not on an empty
tank.
²Leaving the ignition key ON for over two minutes without starting may
make starting difficult because the glow plugs will cease activation.
Reset the system by turning the ignition key to OFF and then back to
ON again.
Minor troubleshooting guide
34
