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Published 01-14-2021 Control # 707-01
POWER TRAIN
TMS9000-2 SERVICE MANUAL
Engine Control System Switches and
Indicator Lights
Engine Stop Indicator
Engine Stop lamp is located in the top right of the
speedometer, which is on the right side of the front console in
the carrier cab. The indicator illuminates red when energized
by a signal from the engine ECM that signifies a serious
engine problem that requires the vehicle and the engine to
be stopped as soon as safely possible. In addition, a warning
buzzer will also sound.
In addition to alerting the operator of system faults, the stop
light, in conjunction with the warning light, is used in the
diagnostic operation of the engine control system. The
diagnostic mode begins when the ignition and engine
diagnostic switch is on and the engine is not running. The
amber light flashes at the beginning of a fault code
sequence, the red light flashes the three-digit or four-digit
code for the active fault and the amber light flashes again to
separate the previous red light sequence from the next one.
Each code will be flashed twice before moving to the next
code. When all codes have been flashed, the sequence will
begin again. If no codes are present, both the warning and
stop lights will remain on.
Engine Warning Indicator
The engine warning/electrical system diagnostic indicator is
located in bottom right of speedometer. The top portion is the
warning indicator. It illuminates amber when energized by a
signal from the engine ECM that signals the operator of an
engine problem which must be corrected.
In addition to alerting the operator of system faults, the
warning light, in conjunction with the stop light, is used in the
diagnostic operation of the engine control system. The
diagnostic mode begins when the ignition and engine
diagnostic switch is on and the engine is not running. The
amber light flashes at the beginning of a fault code
sequence, the red light flashes the three-digit or four-digit
code for the active fault and the amber light flashes again to
separate the previous red light sequence from the next one.
Each code will be flashed twice before moving to the next
code. When all codes have been flashed, the sequence will
begin again. If no codes are present, both the warning and
stop lights will remain on.
Filter Exhaust System Cleaning/High Exhaust
Indicator
The amber filter exhaust system cleaning indicator, located
in the tachometer, will illuminate when the exhaust system
has not been able to clean under normal operating
conditions and is in need of assistance in order to perform an
active cleaning. There are three progressive stages of need
for cleaning indicated by this light:
•
A) On Solid:
Cleaning should be done within one shift of
operation.
•
B) Flashing:
Cleaning needs to be done soon.
•
C) Flashing with Check Engine Light Illuminated:
Start cleaning immediately.
The high exhaust temperature indicator is located in the
tachometer. The indicator illuminates red when an active
exhaust cleaning has been initiated and the exhaust
temperatures will be elevated above normal levels for
operating conditions.
Engine Idle/Diagnostic Switch
The engine idle/diagnostic switch located on the left side of
the front console is used when servicing the engines
electronic control system.
It is a two position on/off switch used to activate the testing
mode (fault codes). When the switch is in the diagnostic
position and is used in conjunction with the engine
increment/decrement (+/-) switch, access will be gained to
toggle up and down through the fault codes.
Engine Increment/Decrement Switch
The engine increment/decrement switch located on the left
side of the front console is used when servicing the engine
electronic control system.
It is a two-position (+/-) momentary switch that provides idle-
control inputs that increases and decreases the engine idle
when the idle/diagnostic switch is in the idle position.
Pushing the top of the switch increases (+) engine RPM or
pushing the bottom of the switch decreases (-) engine RPM.
FUEL SYSTEM
Description
The fuel system consists of the fuel tank, fuel filter-water
separator, injection fuel pump, and the fuel injectors. All
components except the fuel tank and fuel filter-water
separator are installed on the engine or supplied with the
engine for remote mounting.
Fuel Tank
The fuel tank is an aluminum round tank located on the left
side of the crane. The tank has a draw capacity of 367 l
(97 gal). Two connections on the top of the tank provide for
fuel supply to the engine and return of surplus fuel from the
engine. The tank is equipped with a spin-type filler cap and
fuel quantity sender units which provide signals to quantity
indicators on the instrument panels in both cabs.
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