TOYOTA CELICA 1987 Service Repair Manual

EFI SYSTEM - Air Induction System FI-97
n F-l
f I
FC El E2 VS
wwwwwwlLlr
lb
Measuring
Plate
2
, REMOVAL OF-AIR FLOW METER
1. DISCONNECT AIR FLOW METER CONNECTOR
2. DISCONNECT NO. 2 AIR CONNECTOR HOSE
3. REMOVE AIR CLEANER CAP
Remove the two bolts and cap.
L 4. REMOVE AIR FLOW METER
Pry off the lock plates, and remove the four nuts, and air
flow meter.
INSPECTION OF AIR FLOW METER
INSPECT RESlSiANCE OF AIR FLOW METER
Using an ohmmeter, measure the resistance between each
terminal by moving the measuring plate.
Terminals Resistance (a) Measuring plate
opening
FC - El Infinity
Zero Fully closed
Other than
closed position
VS - E2
20 - 600
20 - 1,200 Fully closed
Fullv open
L
NOTE: Resistance between terminals E2 and VS will
change in a wave pattern as the measuring plate slowly
opens.
If the resistance is not as specified, replace the air flow
meter.
INSTALLATION OF AIR FLOW METER
1.
INSTALL AIR FLOW METER
Install the air flow meter with the two lock plates and four
nuts. Pry the lock plates on the nuts.
2. INSTALL AIR CLEANER CAP
Install the cap with the two bolts.
3.
CONNECT NO. 2 AIR CONNECTOR HOSE
4.
INSTALL AIR FLOW METER CONNECTOR

EFI SYSTEM - Air Induction System
.+ AircFlow Meter (7M-GTE)
Leaf SDrina
w Taitira
i- Dlre&g Jpy)-:..
Vortex
Generating Hole Transistor
Objectives
Ohmmeter
Air mow Meter ON-VEHICLE INSPECTION .
INSPECT RESISTANCE OF AIR FLOW. METER
.I
(a) Disconqect the air floyiri+tei‘connector.
(b) Using an ohmmeter (antiiog’type), tieasure the resis-
tance betweeit each~fer~i~ai.~ :.
Terminals Res&anc~
,.. < Temperature
KS - El CQR
El -KS 5-
‘10 k0
VS - El IO - 15 kR
El 4VC 5- 10 kSZ
10 - 20 kR -20% ( 4“F)
4-7kn 0°C ( 32°F)
,JHA - E2 2-3kfi 20°C ( 68OF)
0.9 - 1.3
k0, 40°C (I 04°F)
0.4 - 0.7
ka > 60°C (140°F)
+
If the resistance is not as specified, replace the air flow
meter.
(c) Reconnect the air flow meter connector.

EFI SYSTEM - Air Induction System
FI-99
-.
REMOVAL
1.
OF AIR FLOW
METER
REMOVE NO. 4 AIR CLEANER PIPE WITH NO. 1 AND
NO. 2 AIR CLEANER HOSES
2. REMOVE AIR FLOW METER WITH AIR CLEANER
CAP
(a) Disconyect the connector.
(b) Remove the three clamps and bolt.
(c) Loosen the clamp and remove the air flow meter with
air cleaner cap. h f
3.
REMOVE AIR FLOW METER
(a) Remove the two screws and bracket.

-100 EFI SYSTEM - Air Induction Syste,m
2 FI198:
Fl198
(b) Pry off the lock plate.
(c) Remove the four nuts, lock plates, No. 1 air cleaner
cover and air cleaner cap.
INSPECTION OF AIR FLOW METER
INSPECT AIR FLOW METER
Check that the h&y-combed mesh is neither deformed
nor damaged.
If necessary, replace the air flow meter.
INSTALLATION OF AIR FLOW METER
1.
INSTALL AIR FLOW METER
(a) Install the air cleaner cap, No. 1 air cleaner cover and
lock plates to the air flow meter with the four nuts.
(b) Pry the lock plates on the nuts.
(c) Install the bracket with the two screws.
2. INSTALL AIR FLOW METER WITH AIR CLEANER
CAP
(a) Install the air flow meter with air cleaner cap, and
tighten the clamp.

(b) Install the bolt and clamps. EFI SYSTEM
- Air Induction System
FI-101
k) Connect the connector.
3. INSTALL NO. 4 AIR CLEANER PIPE WITH NO. 1 AND
NO. 2 AIR CLEANER HOSES

EFI ,SY$TEM - Air Inducti& System
Throttle Body --
‘M-GE 7M-GTE
Throttle’Position
Sensor Throttle’ Position
fl1693 Flo504nl9f
.,.
,. ,F .,’
1 .ON:VEHtCLE INSPECTION
1. INSPECT THROTTLE BODY
(a) Check that the throttle linkage moves smoothly.
(b) Check the vacuum at each port.
0 Start the engine.
0 Check the vacuum with your finger.
Port
Purge
EGR
R
At idling
No vacuum
No vacuum
No vacuum
Other than idling
Vacuum
Vacuum
No vacuum

EFI SYSTEM - Air Inductioi System
PI-1 03
-
1 7M-GE
I 7M-GTE
d
c q-rEA
vc
1
I I
in-7.h
IDL VTA VC ’
s --I
2. INSPECT THROTTLE POSITION SENSOR
(a) Disconnectthe connector from the sensor.
(b) Insert a thickness gauge between the throttle stop
screw and stop lever.
(c) Using an ohmmeter, measure the resistance between
each terminal.
(d) Reconnect the sensor connector.
./ !’
REMOVAL OF THROTTLE BODY ‘.
/ (7M-GE)
1. DRAIN COOLANT FRdM THROTTLE BODY
2. REMOVE ACCELERATOR CONNECTING ROD
3. DISCONNECT VACUUM HOSES
4.
DISCONNECT NO. 2 AND NO. 3 WATER BY-PASS
HOSES
. 1 5. DISCONNECT THROTTLE POSITION SEI
7.
REMOVE THROTTLE BODY BRACKET(S)
6. REMOVE THROTTLE BODY
Remove the four bolts and throttle body with the gasket,

Fl-104 EFI SYSTEM - Air Induction Svstem
;i7M-GTE)
1.
2.
3. thAIhi COOLANT -kROM THROTTLE BODY
DISCONNECT ACCELERATOR CONNECTING ROD
REMOVE AIR INTAKE CONNECTOR
(See steps 1 to 3 on page EM-121
4.
5.
/A-.( /w /
Trottle Stop Screw
DISCONNECT VACUUM HOSES
*
DISCONNECT THROTTLE POSITION SENSOR
CONNECTOR
REMOVE THROTTLE BODY
(a) Disconnect the tko water by-pass hoses from the
ISC valve and water pipe.
(b) Remove the four bolts, throttle body and gasket.
(cl Remove the two water by-pass hoses.
INSPECTION OF THROTTLE BODY
1. CLEAN THROTTLE BODY
(a) Using a soft brush and carburetor cleaner, clean the
cast parts.
(d) Using compressed air, clean all passages and aper-
tures.
CAUTION: To prevent deterioration, do not clean the
throttle position sensor and dash pot.
2. INSPECT THROTTLE VALVE
Check that there is no clearance between the throttle stop
screw and throttle lever when the throttle valve is fully
closed.

,_ ,.A< ,..,.
EFI SYSTEM - Air Induction System
FI-105
FI188
Ft162!
FHE
3. INSPECT THROTTLE POSITION SENSOR
(See step 2 -on page Fl-103)
4. IF NECESSARY, ADJUST THROTTLE POSITION
SENSOR
(a) Loosen the two screws of the sensor.
fll6i
(b) Insert a 0.58 mm (0.0228 in.) (7M-GE) or 0.70 mm
(0.0276 in.) (XVI-GTE) thickness gauge, between the
throttle stop screw and lever.
(c) Connect the test probe of an ohmmeter to terminals
IDL and E.
(dd) Gradually turn the sensor clockwise until the ohm-
meter deflects, and secure the sensor with the two
screws.
(e) Recheck the continuity between terminals IDL and
E2.
I Clearance between
I
I lever and stop screw
I Continuity (IDL - E2)
I 7M-GE
! 7M-GTE
I
0.40 mm
I 0.50 mm
(0.0157 in.) (0.0197 in.) Continuity
0.75 mm 0.90 mm
(0.0295 in.1 lo.0354 in.) No continuity

FI-106 EFI SYSTEM - Air Induction S&m
-.
@ls,TAL&ATION OF THROTTLE BODY
(?M-QE)
I FIlW
I-
/
1.
2.
3.
4.
6.
6.
7.
6. INSTALL THROTTLE BODY
Install the gasket-and throttle body with the four bolts.
Torque: 130 kg-cm (9 ft-lb, 13 Narn)
CONNECT THROTTLE BODY BRACKET@
CONNECT AIR CLEANER HOSE
CONNECT THROTTLE POSITiON SENSOR
CONNECTOR
CONNECT VACUUM HOSES
CONNECT WATER HOSES
CONNECT ACCELERATOR CONNECTING ROD
REFILL WITH COOLANT
(‘/M-GTE)
1. INSTALL THROTTLE BOPY
(a) Install the two water by-pass hoses.
(b) Install a new gasket and throttle body with the four
bolts.
(c) Connect the two water by-pass hoses to the ISC
valve and water pipe.