1987 TOYOTA CELICA Service Repair Manual

EFI SYSTEM
- Fuel System
-.
11. CONNECT FOLLOWING CONNECTORS:
l Throttle position seksor connector
l ISC valve connector FI-95
. (‘IM-GE)
Cold start injector connector
12. CONNECT FOLLOWING HOSES:
0 Water hoses from throttle body (7M-GE) or water by-
pass pipe (7M-GTE)
l Vacuum hoses from throttle body
0 ISC valve hoses from throttle body
l Vacuum sensing hose from pressure regulator
13. REFILL CQOLANT (See page CO-51
14. CONNECT CABLE TO NEGATIVE TERMINAL OF
_’
BATTERY ’
fy.” 15. CHECK FOR FUEL LEAKAGE (See page Fl-‘I 1 I
i
.

FI-96 Efi SYSTEM - Air Induction Svstem
AIFi INDlhTlON- SYSTEM
Air Flow Meter (7M-GE) ’
POTENTIONMETER
Damping Chamber

Corrj,pensatjon Plate
FROM AIR
CLEANER
Measuring Plate IR
w
AIR
CLEANER
SIDE
’ -
isIDE Measuring Plate
Air By-pass Passage
FC E 1 E2 VC E2 VS THA
-I ON-VEHICLE INSPECTION
INSPECT RESISTANCE OF AIR FLOW METER
(a) Disconnect the air flow meter connector.
lb) Using an ohmmeter, measure the resistance between
each terminal.
Terminals
Resistance Temperature
VS - E2
20 - 600 SL
VC - E2 200 - 400 $2 -
IO- 20 Kfi -20°C ( 4“F)
4-7KR
0°C ( 32’F)
THA - E2 ‘,
2-3KR 20°C ( 68°F)
0.9 - 1.3 Kfi
40°C (I 04’F)
0.4 - 0.7 KR 60°C (140°F)
FC - El
Infinity
If the resistance is not as specified, replace the air flow
meter.
(cl Reconnect the air flow meter connector.

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