Toyota 4A-F, Руководство по ремонту

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EFI SYSTEM
T II I h o tin
OK
CONTINUED FROM PAGE
FI-1S
CHECK fUEL PRESSURE
(See page Fl-67) BAO
OK
CHECK INJECTORS
(See
paoe
FI-77)
BAO
OK
CHECK EFI ELECTRONIC CIRCUIT
USING VOLT/OHMMETER
BAO
lSee page
FI-29)
OK
{w/o AIR
FLOW
METERI
CHECK VARIABLE RESISTOR
BAO
(See page
FI-9SI
1.
F
u el pump (See page
FI-65)
2.
Fuel filter
3. Fuel preS5ure regulator (See page FI-75)
Inj8(;liOn condition
1 Wiring connections
2.
Power to ECU
(1) Fusible linlc.s
(2)
FUMS
13)
EFI
main relay
3. Air flow meter (wI Air llow meter)
4.
Vacuum sensor !w/o Air flow met r)
5. Water temp. sensor
6 . A
ir temp. sensor
7.
Injection signal circuit
II)
Injector wiring
(2) Solenoid resistor Iwlo
A)r
Ilow meter!
(3) ECU
6.
O
xy g e n sensor Iwl TWCI
Variable ruiSIQr
SYMPTOM - HIGH ENGINE IDLE SPEED {NO DROPI
CHECK ACCELERATOR LINKAGE
OK
B
A
O
CHECK AUXILIARY AIR VALVE A
uxi
li
ary
air valve - Always open
{See page
FI-S7I
BAO
OK
I
CHECK AIR CONDITIONER IDLE-UP
Air
valve for air conditioner - Leakage
CIRCUIT
BAO
OK
CHECK DIAGNOSIS SYSTEM
Diagnostic codelsl lSee page
FI-25 or 26)
Check for output of diagnostic code.
Malfunction
(See
page Fl-22J
code
Is)
Normal code
CHECK THROTTLE POSITION SENSOR
Throtlle body
ISee page
FI-84) BAO
CONTINUED ON
PAGE
FI- 1 7