Landoll Bendi B40i4 Скачать руководство пользователя страница 131

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ENGINE WITH FUEL SYSTEM

5-11

If the ETB goes into Limp Home mode the cause of the
DTC must remedied, the DTC must be cleared and then
the forklift keyed “OFF” for at least 20 seconds.

If the Engine cranks but will not start
or runs poorly, with no DTC’S

• Is there the proper fuel in the tank and is the fuel tank

open?

• Is there engine rpm showing on the S3000 monitor

while cranking?

• Is there Spark at each spark plug?

• Are the injectors firing?

• Is there fuel pressure at fuel rail?

• Is LPG vaporizer Lock-Off opening?

• Do you have No or Low Cylinder compression?

Is the fuel tank open?

Make sure the tank valve is open and that the excess
flow valve has not been tripped shut. The excess flow
valve is in the LPG tank and will shut off the flow of LPG if
there is a sudden surge or high flow of LPG. This valve
can be tripped by a rapid opening of the manual tank
valve (you may hear a click if it is tripped). To reset the
excess flow valve close the manual valve completely and
then slowly (especially at the beginning) re-open it to fully
open.

Is there engine rpm showing on the S3000
monitor while cranking?

If there is no rpm showing on the S3000 Monitor and the
monitor is communicating properly with the S3000 then
the cranking rpm is too low or the engine crank sensor is
not functioning. Is there sufficient battery voltage during
cranking? The minimum cranking speed which can be

detected by the ECU is 60 rpm. Disconnect CPS225 and
put a voltmeter across pins 1 and 2 and set the voltmeter
to AC low voltage then crank the engine. You should see
some voltage, if zero replace the crank position sensor.

Is there Spark at each spark plug?

The spark should show up at the spark plug - if you
remove a plug and hold the ground electrode against the
engine block and crank the engine (or other suitable
ground) you should see a spark between the spark plug
tip and the ground electrode. Be sure there is no petrol or
LPG about when you do this test. A preferred method is
to have an in-line spark tester which fits between the high
tension line and the spark plug. - If you see no spark at
the plug or at the in-line spark tester: 1> The signals to
trigger the coil to fire are on CPS217 pins A (cyl 2 & 3)
and pin B (cyl 1 & 4) - if you disconnect CPS217 from the
coil and put a voltmeter across pin A and ground and
crank the engine you should see the voltage going up
and down between 5 volts and 0 volts. 2> The 5 volts you
should see intermittently on pins A and B of CPS217 is
supplied through the resistors from pin F of CPS241. 3>
check with a voltmeter that 5 volts appears on pin F of
CPS241 when the engine is being cranked. 4> The
ignition signals are supplied by the ECU which is
powered by the power latch relay when the key is turned
on. 5> The coil is powered with battery voltage along the
chain of connections CPS217 pin D, CPS241 pin C,
CRP55 pin 2 check to see this is present (note the
battery voltage will only be present for 2 seconds after
key on [after a 20 second key off] or when the engine is
cranking) 6> The ground circuit for the ignition coil is
CPS217 pin C, CPS241 pin D, CRP55 pin 7. Check to
see this is present and continuous. It has been seen on
some engines that the spark was bypassing the spark
electrode by running inside the plug wire boot then to the