Toyota 8FDU15, Manual

Page: 600 / 618

3-31
z
<ENGINE STALL> ENGINE STALLING ON RELEASING THE ACCELERATOR
Probable cause
• Idling air-fuel ratio adjustment defect
• Ignition timing off
• Air leakage
• Injector defect
• LPG filter defect
Inspect VF voltage
(Refer to parts inspection and adjustment 14)
Inspect changes in VF voltage and OX value
(0 or 1) at 1800 r/min. (idle OFF).
Standard: 2.5 ± 0.5 V*
OK
Adjust initial advance timing
NG
Inspect initial advance timing
(Refer to page 2-16)
OK
To slow solenoid valve system
(Refer to page 3-36)
NG
Inspect slow solenoid valve
(Refer to parts inspection and adjustment 4)
OK
Inspect distributor pickup coil
(Refer to parts inspection and adjustment 12) YES
Does knocking occur on racing of the engine?
NG
Repair air leak
NG
Inspect the air intake system for air leaks
OK
Replace distributor
pickup coil
OK
Inspect wire harness and connectors between
engine ECU - pickup coil
(Refer to wiring diagram)
NG
Repair wire harness
and connectors
OK
Inspect or replace
engine ECU
NO
NG
Replace main solenoid valve
NG
Inspect main solenoid valve
(Refer to parts inspection and adjustment 3)
OK
*: 0 V, 2.50 V, or 5.0 V
will be displayed
when the plug-in
analyzer is used for
the inspection.
Inspect, repair, or replace the feedback-related
components (injectors, O
2
sensor, etc.) and
the relevant wire harnesses and connectors
(Refer to parts inspection and adjustment)
03.book 31 ページ ２００７年２月２２日 木曜日 午後４時４７分
LPG Device for 4Y-E Engine
Section 1.3.3