engine TOYOTA CAMRY V20 1986 Service Information

Sleeve Color MarksCrimping
Tool
ºCLOSE HEREº
Contact
ºINSº Position
10 mm (0.39 in.)
Three or More Times
TERMINAL AND CONNECTOR REPAIR±TERMINAL REPLACEMENT
B±30
40
Wire Harness Repair Manual (RM1022E)
(b)The crimping tool (AMP Part No. 169060) has color
marks on it. Place the sleeve in the correct section of
the tool according to the color of the sleeve itself.
HINT: For the crimping tool, AMP ºPart No. 169060º is
convenient to use.
(c)With the center of the sleeve correctly placed
between the crimping jaws, squeeze the crimping tool
until either end comes into contact at the section
marked by ºCLOSE HEREº.
HINT: Check to see that the sleeve and wires are still in
the correct position before closing the crimping tool ends
with steady pressure.
(d)Pull the joined wires to either end. Make sure that they
are joined firmly by the sleeve.
NOTICE:
If the joined wires come loose the splice is defective,
so replace the sleeve and repeat the procedure.
(e)Crimp both ends of the sleeve with the crimping tool
at the ºINSº position.
6. Protect Joined Section
Wrap silicon tape around the joins to protect them from
moisture.
NOTE: This job is required in repairs of the engine
compartment, under the floor and other moisture entry
positions.

Connector A
Connector B
Connector A
Lass than 1mmConnector B
Bolt
Cross±section of the bolt
TERMINAL AND CONNECTOR REPAIR±HOW TO INSTALL AND REMOVE SPECIAL CONNECTORS
B±52
62
Wire Harness Repair Manual (RM1022E)
Connector fixed by bolts
1. Area used

Engine control computer harness
2. Cut the connection of the connector.
(1)Remove the connector A.
(2)Loose the bolt using a tool like driver until the
connector B can be removed by hand and separate
the connector.
HINT: If the bolt can not be removed, roll it while pulling
forward.
3. Connection of the connector
(1)Temporarily fit the connector B.
(2)Tighten the bolt by using tool like driver and fit the
connector B completely.
NOTICE:

Tighten the bolt until feeling it lighter. Then confirm
that the width of chink of the connector B is less
than 1mm.

The bolt can be rolled after it is fitted.

If the impact wrench is used, do not let it rolling
more than three seconds. (The housing may be
deformed by generated heat)

Be sure and connect the connector B straight. Do
not incline it while connecting.
(3)Connect the connector A.

4. As some tachometers are not compatible with this igni-
tion system, we recommend that you confirm the
compatibility of your unit before use.
5. NEVER allow the tachometer test probe to touch ground
as this could damage the igniter and/or ignition coil.
6. Do not disconnect the battery when the engine is run-
ning.
7. Check that the igniter is properly grounded to the body.
PRECAUTIONS
1. Do not leave the ignition switch on for more than 10
minutes if the engine will not start.
2. (3S±FE)
When a tachometer is connected to the system, con-
nect the test probe of the tachometer to service con-
nector of the distributor.
3. (2VZ±FE)
When a tachometer is connected to the system, con-
nect the test probe of the tachometer to terminal IG E)
of the check connector.
± IGNITION SYSTEMPrecautionsIG±2

Incorrect ignition timing
Ignition problems
wIgnition coil
wIgniter
wDistributor
wHigh±tension cords
Ignition wiring disconnected or broken
Spark plug faulty
Ignition wiring faulty
Incorrect ignition timing
Ignition problems
wIgnition coil
wIgniter
wDistributor
wHigh±tension cordsReset timing
Inspect coil
Inspect igniter
Inspect distributor
Inspect high±tension cords
Inspect wiring
Inspect coil
Inspect igniter
Inspect distributor
Inspect high±tension cords
Spark plug faulty
Ignition wiring faulty
Incorrect ignition timingIG±17, 20
IG±7, 12
IG±8, 12
IG±7, 12
IG±6, 10
Spark plug faulty
Incorrect ignition timing Engine will not start/
hard to start
(cranks OK)
TROUBLESHOOTING
Engine dieseling
(runs after ignition switch
is turned off)Inspect plugs
Inspect wiring
Reset tinningInspect plugs
inspect wiring
Reset timing
Muffler explosion
(after fire) all the timeEngine hesitates/
poor accelerationIG±7, 12
IG±8, 12
IG±7, 12
IG±6, 10
Inspect plugs
Reset timing Incorrect ignition timing
Incorrect ignition timing
Incorrect ignition timing
Incorrect ignition timing Poor gasoline mileageRough idle or stalls
IG±6, 10
120
Engine overheatsEngine backfiresPossible cause
Reset timing
Reset timingReset timingReset timingIG±17, 20 IG±17, 20
IG±17, 20
IG±17, 20 IG±17, 20
IG±17, 20 Problem
IG±6, 10
IG±6, 10 Remedy
Page
± IGNITION SYSTEMTroubleshootingIG±3

ELECTRONIC SPARK ADVANCE (ESA)
The ECU is programmed with data for optimum ignition timing
under any and all operating conditions. Using data provided
by sensors which monitor various engine functions (rpm, in-
take air volume, eng. temperature, etc.) the microcomputer
(ECU) triggers the spark at precisely the right instant.
IGNITION SYSTEM CIRCUIT
± IGNITION SYSTEMIgnition System CircuitIG±4

ON±VEHICLE INSPECTION (3S±FE)
SPARK TEST
CHECK THAT SPARK OCCURS
(a) Disconnect the high±tension cords from the spark plugs.
(b) Remove the spark plugs.
(c) Install the spark plugs to each high±tension cord.
(d) Ground the spark plug.
(e) Check if spark occurs while engine is being cranked.
HINT: To prevent gasoline from being injected from injectors
during this test, crank the engine for no more than 1
± 2 seconds at a time.
If the spark does not occurs, perform the test as follows:
CHECK RESISTANCE OF IGNITION COIL
(See page IG±7)
Resistance (Cold):
Primary 0.38 ± 0.46


Secondary 7.7 ± 10.4 k

CHECK POWER SUPPLY TO IGNITION
COIL AND IGNITER
1. Ignition switch turn to ON.
2. Check that there is battery voltage at
ignition coil positive (+) terminal. CHECK RESISTANCE OF HIGH±TENSION
CORD (See page IG±6)
Maximum resistance: 25 k
per cord
CHECK RESISTANCE OF SIGNAL
GENERATOR (PICKUP COIL) (See page
IG±8) Resistance: 140 ± 180


CHECK AIR GAP OF DISTRIBUTOR
(See page IG±7)
Air gap: 0.2 mm (0.008 in.) or moreCHECK CONNECTION OF IGNITION
COIL, IGNITER AND DISTRIBUTOR
CONNECTORS
Check wiring between ignition switch
to ignition coil and igniter.
Replace the distributor housing
assembly.
Replace the distributor housing
assembly.Replace the ignition coil.
TRY ANOTHER IGNITERReplace the cord(s). Connect securely. SPARK TEST
BAD BAD
BAD
BAD BAD
BAD
± IGNITION SYSTEMON±Vehicle Inspection (3S±FE)IG±5

ON±VEHICLE INSPECTION (2VZ±FE)
SPARK TEST
CHECK THAT SPARK OCCURS
(a) Disconnect the high±tension cord from the distributor.
(b) Hold the end approx. 12.5 mm (0.50 in.) from body of vehicle.
(c) See if spark occurs 'while engine is being cranked.
HINT: To prevent gasoline from being injected from injectors
during this test, crank the engine for no more than 1
± 2 seconds at time.
If the spark does not occurs, perform the test as follows:
CHECK RESISTANCE OF IGNITION COIL
(See page IG±12)
Resistance (Cold):
Primary 0.41 ± 0.50

Secondary 10.2 ± 13.8 k
CHECK POWER SUPPLY TO IGNITION COIL
1. Ignition switch turn to ON.
2. Check that there is battery voltage at
ignition coil positive (+) terminal.
CHECK RESISTANCE OF SIGNAL
GENERATOR (PICKUP COIL) (See page IG±8)
Resistance: 140 ±180
CHECK RESISTANCE OF HIGH±TENSION
CORDS (See page IG±10)
Maximum resistance: 25 k
per cord
CHECK AIR GAP OF DISTRIBUTOR
(See page IG±12)
Air gap: 0.2 mm 10.008 in.) or moreCHECK CONNECTION OF IGNITION COIL,
IGNITER AND DISTRIBUTOR CONNECTORS
Check wiring between ECU and distributor,
only then try another ECU.Check wiring between ignition switch to
ignition coil.
CHECK IGT SIGNAL FROM ECU
(See page FI±62)Replace the ignition coil.
Replace the distributor.
TRY ANOTHER IGNITERReplace the distributor. Replace the cord(s). Connect securely. SPARK TEST
BAD
BAD
BAD
BAD BAD
BAD
BAD
± IGNITION SYSTEMON±Vehicle Inspection (2VZ±FE)IG±9

INSPECTION OF SPARK PLUGS
NOTICE:
wNever use a wire brush for cleaning
wNever attempt to adjust the electrode gap on used
spark plug.
wSpark plug should be replaced every 100,000 km
I60,000 miles).
6. If not using a megger:
(a) Quickly race the engine to 4,000 rpm five times.
(b) Remove the spark plug.
(See step 2 on page IG±11)
(C) Visually check the spark plug.
If the electrode is dry ... Okay
If the electrode is wet ... Proceed to step 3 INSPECTION OF HIGH±TENSION CORDS
1. CAREFULLY REMOVE HIGH±TENSION CORDS BY
THEIR RUBBER BOOTS FROM SPARK PLUGS
NOTICE: Pulling on or bending the cords may damage the
conductor inside.
1. INSPECT ELECTRODE
A. If using a megger (insulation resistance motor):
Measure the insulation resistance.
Correct insulation resistance: 10 M

or more
If the resistance is less than specified, proceed step 2. 2. INSPECT HIGH±TENSION CORD RESISTANCE
Using an ohmmeter, measure the resistance.
Maximum resistance: 25 k

per cord
If the resistance is greater than maximum, replace the high±
tension cord.
± IGNITION SYSTEMOn±Vehicle Inspection (2VZ±FE)IG±10

3. CONNECT HIGH±TENSION CORDS TO SPARK PLUGS
Firing order: 1 ± 3 ± 4 ± Z
4. CONNECT DISTRIBUTOR CONNECTORS
5. INSTALL AIR CLEANER HOSE
6. CONNECT CABLE TO NEGATIVE TERMINAL OF
BATTERY
7. WARM UP ENGINE
Allow the engine to normal operating temperature.
8. CONNECT TACHOMETER AND TIMING LIGHT TO
ENGINE ±
Connect the test probe of a tachometer to the service con-
nector of the distributor.
NOTICE:
wNEVER allow the tachometer test probe to touch ground
as it could result in damage to the igniter and/or ignition
coil.
wAs some tachometers are not compatible with this igni-
tion system, we recommend that you confirm the
compatibility of your unit before use. (c) Align the cutout of the coupling with the line of the
housing.
(d) Insert the distributor, aligning the center of the flange
with that of bolt hole on the cylinder head.
(e) Lightly tighten the two hold±down bolts. INSTALLATION OF DISTRIBUTOR
1. SET NO.1 CYLINDER TO TDC/COMPRESSION
Turn the crankshaft clockwise, and position the slit of the
intake camshaft as shown.
2. INSTALL DISTRIBUTOR
(a) Install a new 0±ring to the housing.
(b) Apply a light coat of engine oil on the 0±ring.
± IGNITION SYSTEMDistributor PS±FE)IG±16

(b) Using a tinning light, check the ignition tinning.
Ignition timing: 10
°6TDC @ idle
(Transmission in N range)
(c) Loosen the two hold±down bolts, and adjust by turning
the distributor.
(d) Tighten the hold±down bolts, and recheck the ignition
timing.
Torque: 130 kg±cm (9 ft±Ib, 13 N±m)
9. ADJUST IGNITION TIMING
(a) Using SST connect terminals TE1 and E1 of the check
connector.
SST 09843±18020
HINT: After engine rpm are kept at 1, 1,300 rpm for 5 sec-
onds, check that they return to. idle speed.
10. FURTHER CHECK IGNITION TIMING
Ignition timing: 13 ± 22
° BTDC @ idle
(Transmission in N range)
HINT: The timing mark moves in a range between 13°
and 22°.
11. DISCONNECT TACHOMETER AND TIMING LIGHT
FROM ENGINE (e) Remove SST.
SST 09843±18020
± IGNITION SYSTEMDistributor (3S±FE)IG±17