1987 TOYOTA CELICA Service Repair Manual

lGNlTlON S+S
1
EM - On-Vehicle Inspection (‘IM-GE)
INSPECTION 6F DISTRIBUTOR
IG-11
1. lNSPECT AIR GAPS
Using a thickness gauge, measure the gap between the .
signal rotor and pickup coil projection.
Air gap: 0.2 - 0.4 mm (0.008 - 0.016 in.)
If the gap is not as specified, replace’the distributor. NE Pickup
Gl Pickup G2 Pickup
INSPECT PICKUP COILS
Using an ohmmeter, check resistance of the pickup coil.
Gl pickup coil resistance:
61-00 1’40-180fi
G2 pickup coil resistance:
62-G@ 140-18Os1
NE pickup coil resistance:
NE-GO 140-180 0
If the resistance is not as specified, replace the distributor.

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.

6. REMOVE IGNITION COIL COVER
(a) Remove the oil filler cap.
‘...”
I I
I(30598
Ohmmeter
/
IGO
7. REMOVE IGNITION C0l.L WITH BRACKET
(a) Remove the nut.
(b) Disconnect the No.1 and No.2 high-tension cords
from the ignition coil and clamp.
(cl Remove the ignition coil with bracket and high-ten-
sion cords.
id) Remove the No.1 and No.2 high-tension cords from
the spark plugs.
8.
9. REMOVE SPARK PLUGS
Using SST, remove the spark plug.
SST 09155-16100
PERFORM SPARK TEST
Ia) Install the oil filler cap.
(b) Install the spark plugs to each high-tension cord.
(4 Ground the spark plug.
(d) Disconnect the solenoid resistor and cold start injec-
tor connectors.
(e) See if spark occurs while engine is being cranked.
INSPECTION OF HIGH-TENSION CORDS
INSPECT HIGH-TENSION CORD RESISTANCE
Using an ohmmeter, measure the resistance.
Maximum resistance: 25 kfl per cord
If resistance exceeds maximum, check the terminals.
If necessary, replace the high-tension cord.
INSPECTION OF SPARK PLUGS
(See pages IG-7, 8)

IG-14 IGNITION.SYSTEM - On-Vehicle Inspection (7M-GTE)
INSPECTIoN OF IGNlTlOhi COIL-
1. INSPECT POWER SOURCE LINE
(a) Disconnect the high-tension cord from the ignition
coil.
(b) Disconnect the ignition coil connectors.
(c) Turn the ignition switch ON,
Voltmeter
ccl
0
!I
0 0
dz 160668
I IGOt
I - IG067
I \ ’ IG087'
(d) Using a voltmeter, measure the voltage between ter-
minal 1 and body ground.
Voltage: Approx. 12 V
2. INSPECT PRIMARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the
positive (+I and negative (-1 terminals.
Primary coil resistance (cold): 0.3 - 0.5 R
NOTE: Because is inside the coil, it is impossible to
measure secondary coil resistance.
3. INSPECT IGNITION COIL GROUND
Using an ohmmeter, check that there is no continuity be-
tween the ignition coil terminal and body ground.
4. IF NECESSARY, REPLACE IGNITION COIL
Using a hexagon key wrench 3 mm (0.12 in.), replace the
ignition coil.

IGNITION-SYSTEM - On-V?hicle Inspection (7M-GTE)
IO-1 5
5. INSTALL IGNITION COIL WITH BRACKET .
(a) Connect the ignition coil connector.
(b) install the high-tension cords as shown in the illustra- ’
tion; No.5 and No.6, No.3 and No.4, and No.1 and
No.2.
(c) Install and torque the nut.
Torque : 55 kg-cm (48 in.-lb, 5.4 Nmrn)
CAUTION: Do not over tighten the nut.
IGOB,
12
- 6. INSTALL IGNITION COIL COVER
(a) Remove the oil filler cap.
(b) Install the ignition coil cover with the five nuts.
(c) install the oil filler cap.
7. INSTALL INTAKE AIR CONNECTOR
(a) Install the intake air connector.
(b) Install and tighten the two bolts.
(c) Tighten the clamp.
Id) Connect the air valve hose.

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

IGNITION SYSTEM
- On-Vehicle Inspection (7M-GTE)
lG4::7:
Voltmeter
4-x
: .
‘s...
Ohmmeter
IFal
Ohmmeter
Ohmmeter
IGOW A B C-
INSPECTION -bF IGNITER i
1.
CHECK POWER SOURCE LINE VOLTAGE
(a) Disconnect the connector 6-P.
(b) Turn the ignition switch ON.
(c) Using a voltmeter, connect the positive (+I probe to
the terminal 3 of harness side and negative (-1 probe
to the body ground.
Voltage: Approx. 12 V
(d) Connect the connector 6-P.
2. CHECK POWER TRANSISTOR IN IGNITER
(a)
(b)
(c)
(d)
(e)
(f)
(d
(h)
(i)
(j)
(k) Disconnect the connector 4-P.
Disconnect each ignition coil from its connector.
Turn the ignition switch ON.
Using an ohmmeter, connect terminal 2 of the igni-
tion coil C and body ground.
Using a 3 V dry cell battery, apply voltage to terminal
2 of the connector 4-P.
As voltage is applied, check that there is momentary
continuity.
Using an ohmmeter, connect terminal 2 of the igni-
tion coil A and body ground.
Using a 3 V dry cell battery, apply voltage to terminal
4 of the connector 4-P.
With terminal 4 connected apply voltage to terminal
2 of connector 4-P.
As you apply voltage, check that there is momentary
continuity.
Using an ohmmeter, connect terminal 2 of the igni-
tion coil B and body ground.
Using a 3 V dry cell battery, apply voltage to terminal
3 of the connector 4-P.
With terminal 3 connected apply voltage to terminal
2 of connector 4-P.
As you apply voltage, check that there is momentary
continuity.

IGNITION SYSTEM - On-Vehicle Inspection (7M-GTE)
NE Pickup Gl Pickup G2 Pickup
.’ INSPECTION dF -CAM .POSITION SENSOR
1. INSPECT AIR GAP
Using a thickness gauge, measure the gap between the ?
signal rotor and pickup coil projection.
Air gap: 0.2 - 0.4 mm (0.008 - 0.016 in.)
If the gap is not within specification, replace the cam posi-
tion sensor.
2. INSPECT PICKUP COILS
Using an ohmmeter, check resistance of the pickup coil.
Gl pickup coil resistance:
Gl -GQ 140-180n
62 pickup coil resistance:
G2-GO 140-180n
NE pickup coil resistance:
NE-GO 140-180n
If the resistance is not as specified, replace the cam posi-
tion sensor.