sensor TOYOTA CELICA 1987 Service Manual PDF

ENGINE MECHANICAL - Cylinder Head
EM-&j
REMOVAL OF CYLINDER HEAD
1. (See pages EM-37, 38)
REMOVE AiiERNATOR
(a) Disconnect the No.3 PCV hose.
(b) Remove the drive belt.
(c) Remove the alternator and adjusting bar.
2.
3.
4. (7M-GTE)
REMOVE PS RESERVOIR TANK
Remove the two bolts, nut and, reservoir tank with bracket.
(‘IM-GTE),
REMOVE CAM POSITION SENSOR
REMOVE AIR INTAKE CHAMBER WITH CONNECTOR
(a) Remove the PCV pipe.
(b) Disconnect following connectors:
. (7M-GE)
Cold start injector connector
l Throttle position sensor connector
l ISC valve connector
(c) Disconnect following hoses: aI
l BVSV hose from throttle body
l EGR hoses from throttle.boby
l Vacuum transmitting p.ipe hose from intake cham-
ber
0 Pressure regulator hose
;, I
l VSV (for fuel pressure up) &es
. (7 M-GE)
Diaphragm hose
(d) Disconnect following hoses:
-
0 (7M-GTE)
Auxiliary air pipe hose from vacuum transmitting
pipe hose
l No.1 water by-pass hose from ISC valve
. (7M-GE)
No.3 water by-pass hose from throttle body ,
0 (-/M-GTE)
No.3 water by-pass hose from water by-pass pipe
(e) (w/ EGR)
Remove the EGR pipe mounting bolts.
(f) Remove the manifold stay mounting bolts.

.
ENGINE MECHANICAL - Cylinder Head
-. 6. REMOVE ENGINE WIRE
(a) Disconnect following wires:
. fw/ TWC)
Oxygen sensor connector
l Oil pressure sender gauge connector
l Water temp. sensor connector
l Water temp. sender gauge connector
_-
l Cold start injector time switch connector
l Distributor connector
.,
l Injector connectors
l Three VSV connectors
l Knock sensor connectors
l Ground strap from intake manifold
(b) Remove the engine wire from the each clamps.
7.
REMOVE PULSATION DAMPER, VSV AND NO.1 FUEL
PIPE
6.
REMOVE NO.2 FUEL PIPE
(a) Disconnect the fuel hose from the No.2 fuel pipe.
(b) Remove the bolt,’ union bolt, No.2 fuel pipe and
gaskets.
9. (7M-GTE)
REMOVE AUXILIARY AIR PIPE
10. (7M-GE)
REMOVE HIGH-TENSION CORDS AND DISTRIBUTOR
11. (7M-GE)
REMOVE OIL DIPSTICK
12. (7M-GTE)
REMOVE TURBOCHARGER
(See steps 5 to 7 and 9 to 15 on pages TC-IO-to 12):

EM-56
ENGINE MECHANICAL - Cylinder f-lead
I-
I: Intake
E: ljxhaust No.? - No. 7
Front Mark Intake
Exhaust (4 Coat all bearing journals with engine oil.
(d) Place the camshafts on the cylinder head as shown in
the figure,
NOTE: The eihaust camshaft has a distributor (‘IM-GE)
or cam position sensor (7M-GTE) drive gear.
(e) Apply seal packing to the areas indicated in the
figure.
Seal packing:
Part No.06826-00080 or equivalent
NOTE: Install the No.1 bearing cap immediately after
applying the. seal packing.
(f) Place bearing caps on each journal with the front
marks pointing toward the front.
(g) Tighten each bearing cap bolt a little at a time and in
the sequence shown in the figure.
(h) Using SST, drive in a new camshaft oil seal.
SST 09223-50010
NOTE: Be careful not to install the oil seal slantwise.

EM-62
ENGINE MECHANICAL + Cylinder Head
11. INSTALL NO.2 FUEL PIPE
(a) Install a r-13~ gasket, No.2 fuel pipe, another gasket
and union bolt to the pressure regulator.
Torque: 2bO kg-cm (18 ft-lb, 28 N-m)
(b) Install the No.2 fuel pipe to the delivery pipe with the
bolt.
12. INSTALL ~0.1 FUEL PIPE AND PULSATION DAMP&~
(a) Install a new gasket, No.1 fuel pipe, another gasket
and pulsation damper to the delivery pipe.
Torque: 400 kg-cm (29 ft-lb, 39 N*m)
(b) Install the No.1 fuel pipe and VSV to the intake
manifold.
(c) Connect the No.1 fuel pipe to the fuel support (MA)
or fuel filter (MS).
13. INSTALL ENGINE WIRE
(a) Install the engine wire to the each clamps.
(b) Connect following wires:
0 Three VSV connectors
0 Knock sensor connector
0 Ground strap to intake manifold
l Injector connectors
l Distributor connector
l Cold start injector time switch connector
0 Water temp. sender gauge connector
l Water temp. sensor connector
l Oil pressure sender gauge connector
l (w/ nvc)
Oxygen sensor connector
14. (7M-GTE)
INSTALL IGNITION COIL WITH BRACKET
(See steps 11, 12 on page EM-1 31
15. INSTALL AIR INTAKE CHAMBER WITH CONNECTOR
(a) Position a new gasket on the intake manifold.
(b) (7M-GTE)
Connect the cold start injector connector

-.
,y. ,. P > .: (i) install the EGR
pipe mounting bolts.
:i
(k) Install the manifold ‘stay mounting bolt.
(I) Connect following hoses:
. 47M-GE)
No.3 water by-pass hose to throttle body
(‘IM-GTE)
0 Auxiliary air pipe hose to vacuum transmitting pipe ’
l No.1 water by-pass hose to ISC valve .
(m) Connect following hoses: .,
. (7M-GE)
Diaphragm hose
0 VSWfor fuel. pressure up)hoses
l Pressure regulator hose
0 EGR hoses to throttle body and vacuum transmit-
ting pipe.
0 Vacuum transmitting pipe hose to intake chamber
-I
0 BVSV hose to throttle body
(r-r) Connect following wires:
0 ISC valve connector
0 Throttle position sensor connector
0 (‘/M-GE)
Cold start injector connector.
(01 Install the PCV pipe.
16. (‘IM-GTE)
INSTALL CAM POSITION SENSOR
(See steps 1, 2 on page 10-26)
17. (7M-GTE)
INSTALL PS RESERVOIR TANK
Install the PS reservoir tank with bracket.
18. INSTALL ALTERNATOR AND ADJUSTING BAR
(a) Install the alternator and adjusting bar.
(b) Install the drive belt.
(See page EM-361
(c) Connect the No.3 PCV pipe.

. .
-.
.’ .,
-.. . . t .’
. . . ,..
1.1 .I.. -I ““... _.. ____ ,,_
_ ..I,. ..-. It
_-
IGNiiid’N SYSTEM
PRECAUTIONS Page
................................
16-2
TROUBLESHOOTING
............................
IG-3
IGNITION SYSTEM CIRCUIT
....................
ON-VEHICLE INSPkTlON (7M-GE) IO-4
............. IO-5
ON-VEHICLE INSPECTION (7M-GTE)
............ IO-1 2
DISTRIBUTOR (7M-GE)
.........................
IO-19
CAM POSITION SENSOR (7M-GTE)
............. 16-23

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‘UC
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Problem
Engine will not star-t/
hard to start
(cranks OK)
Rough idle or stalls
Engine hesitates/
poor acceleration
Muffler explosion
(after fire) all the
time
Engine backfires
Poor fuel economy
Engine overheats
TROUBLESHOOTING
Possible causes
Incorrect ignition timing
Ignition problems
0 Ignition coil
. (7M-GTE)
Igniter
. (7M-GE)
Distributor
(7M-GTE)
Cam position sensor
l High-tension cords
Ignition wiring disconnected
or broken
Spark plugs faulty
Ignition wiring faulty
Incorrect ignition timing
Ignition problems
0 Ignition coil
. I7M-GTE)
Igniter
. (7M-GE)
Distributor
(7M-GTE)
Cam position sensor
0 High-tension cords
Spark plugs faulty
Ignition wiring faulty
Incorrect ignition timing
Incorrect ignition timing
Incorrect ignition timing
Spark plugs faulty
Incorrect ignition timing
Incorrect ignition timing Remedy
Reset timing
lrkpect coil
Inspect igniter
Inspect distributor
Inspect cam position sensor
Inspect high-tension cords
Inspect wiring
Inspect plugs
Inspect wiring
Reset timing
Inspect coil
Inspect igniter
Inspect distributor
Inspect cam position sensor
Inspect high-tension cords
Inspect plugs
Inspect wiring
Reset timing
Reset timing
Reset timing
Inspect plugs
Reset timing
Reset timing =
Page-.. :
-
EM-17
IG-10 or 14
IG-17
IG-11
IG-1%
IG-6 or 13
IG-7
EM-l 7
IG-10 or 11
IG-17
IG-I 1
IG-18
IG-6 or 13
IG-7
EM-l 7
EM-1 7

IQ-4
IGNITION SYSTEM - Ignition System Circuit
IGNlTlON SYSTEM CIRCUIT
7M-GE, Ignition Switch lanitian Cnil
AM2 30A
Fusible Link
MAIN 2.OL
(MA)
~“. _._. _ _..
AM29~2
I “i!l A II
I
(MS)
I
Spark Plug l-1 II
R Igniter
1
7M-GTE
I
Ignition Switch
AM2 30A
Fusible Link
MAIN 2.OL
Battery IG2
To Tachometer
1 f
Cam Position
Sensor
r--1
G2 IGT
NE
IGdA
NO
IGdB f
To Tachome:
n Spark Plug
Igniter
: I=
B
I=
Ignition Coil
It08
ELECTRONIC SPARK ADVANCE (ESA)
The ECU is programmed with data for optimum ignitio
timing under any and all operating conditions. Using dat
provided by sensors which monitor various engine func
tions (rpm,
intake air volume, eng. temperature, etc.) th
microcomputer (ECU) triggers the spark at precisely th
right instant.

IQ-12 IGNITION~.SYSTEM - On-Vehicle Inspection (‘IM-GTE)
. ON-VEHICLE’INSPECTION
(7M-GTE)
SPARK TEST
EM35
3. NOTE: Perform this test to check that voltage is coming
from the ignition coil to spark plug.
DISCONNECT NO.1 AIR CLEANER HOSE
DISCONNECT FOLLOWING CABLES AND ROD:
(a) Accelerator link w/ cable
(b) Accelerator rod
(cl (A/T)
Throttle cable
REMOVE ISC PIPE
(a) Disconnect the six hoses from ISC pipe.
(b) Remove the two bolts and ISC pipe.
REMOVE PCV PIPE WITH HOSES
(a) Remove the oxygen sensor wire from two clamps.
(b) Disconnect the No.4 PCV hose from the PCV pipe.
(c) Remove the two bolts.
(d) Disconnect the PCV pipe with hoses from the
cylinder head covers and throttle body.
:
5. REMOVE INTAKE AIR CONNECTOR
(a) Disconnect the air valve hose from the intake air con-
nector.
(b) Loosen the clamp and remove the two bolts.
ic) Remove the intake air connector.

IO-16 IGNITION SYSTEM - On-Vehicle Inspection (7M-GTE)
.8. INSTALL PCi/ PIPE WITH HOSES
(a) Install the PCV pipe with hoses to throttle body and
cylinder head cover.
(b) Install and tighten the two bolts.
(c) Connect the No.4 PCV hose.
(d) Install the oxygen sensor wire to the two PCV pipe
clamps.
9. INSTALL ISC PIPE
(a) Install the ISC pipe with the two bolts.
(b) Connect the six hoses to ISC pipe.
10. CONNECT FOLLOWING CABLES AND ROD:
(a) (A/T)
Throttle cable
(b) Accelerator rod
(cl Accelerator link w/ cable
11. CONNECT NO.1 AIR CLEANER HOSE
I