Page 1137 of 2543
(2JZ±GE)
PRECAUTION
1. With a tachometer connected to the system, connect the
tester probe of the tachometer to terminal IG of the
DLC1.
2. As some tachometers are not compatible with this
ignition system, we recommend that you confirm the
compatibility of your unit before use.
3. Never allow the tachometer terminals to touch ground as
it could result in damage to the igniter and/or ignition
coil.
4. Do not disconnect the battery while the engine is
running.
5. Check that the igniter is properly grounded to the body. IG±2
± IGNITION SYSTEM2JZ±GE
Page 1138 of 2543
PREPARATION
SST (SPECIAL SERVICE TOOLS)
09240±00020Wire Gauge SetDistributor
RECOMMENDED TOOLS
09082±00050TOYOTA Electrical Tester Set
09200±00010Engine Adjust Kit
EQUIPMENT
Megger insulation resistance meter Spark plug
Spark plug cleaner
Thermometer
COOLANT
Item Capacity Classification
Engine coolant (W/Heater) M/T
A/T
7.3 liters (7.7 US qts, 6.4 lmp. qts)
8.3 liters (8.8 US qts, 7.3 lmp. qts)
Ethylene±glycol base
± IGNITION SYSTEM2JZ±GEIG±3
Page 1139 of 2543

ON±VEHICLE INSPECTION
SPARK TEST
CHECK THAT SPARK OCCURS
(a) Disconnect the high±tension cord (from the ignition coil) from
the distributor cap.
(b) Hold the end approx. 12.5 mm (0.50 in.) from the body
ground.
(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 se-
conds at time.
If the spark does not occur, do the test as follows:
SPARK TEST
Connect securely.CHECK CONNECTION OF IGNITION COIL,
IGNITER AND DISTRIBUTOR CONNECTOR
CHECK RESISTANCE OF HIGH±TENSION CORD(See page IG±5)
Maximum resistance: 25 k per cord
CHECK POWER SUPPLY TO IGNITION COIL AND
IGNITER
1. Turn ignition switch to ON.
2. Check that there is battery voltage at
ignition coil positive (+) terminal.
CHECK RESISTANCE OF IGNITION COIL(See page IG±7)Resistance: Cold Hot
Primary 0.21 ± 0.33 0.27 ± 0.39
Secondary 6.4 ± 11.1 k8.2 ± 13.0 k
CHECK RESISTANCE OF SIGNAL GENERATOR
(PICKUP COIL)(See page IG±8)Resistance: Cold Hot
G1 and G 125 ± 200 160 ± 235
G2 and G 125 ± 200 160 ± 235
NE and G 155 ± 250 190 ± 290
CHECK AIR GAP OF DISTRIBUTOR(See page IG±8)Air gap: 0.2 ± 0.5 mm (0.008 ± 0.020 in.)
(See page EG±413)
CHECK IGT SIGNAL FROM ECM
TRY ANOTHER IGNITER
Replace the cord(s).
Check wiring between ignition switch to ignition
coil and igniter.
Replace the ignition coil.
Replace the distributor housing assembly.
Replace the distributor housing assembly.
Check wiring between ECM, distributor and
igniter, and then try another ECM.
IG±4± IGNITION SYSTEM2JZ±GE
Page 1140 of 2543

HIGH±TENSION CORDS INSPECTION
1. REMOVE THROTTLE BODY
(See throttle body removal in SFI System)
2. REMOVE NO.3 TIMING BELT COVER
3. REMOVE CYLINDER HEAD REAR COVER
4. DISCONNECT HIGH±TENSION CORDS FROM SPARK
PLUGS AND IGNITION COIL
Disconnect the high±tension cords at the rubber boot. Do not
pull on the high±tension cords.
NOTICE: Pulling on or bending the cords may damage the con-
ductor inside.
5. REMOVE DISTRIBUTOR CAP WITHOUT
DISCONNECTING HIGH±TENSION CORDS
6. INSPECT HIGH±TENSION CORD RESISTANCE
Using an ohmmeter, measure the resistance without discon-
necting the distributor cap.
Maximum resistance:
25 k per cord
If the resistance is greater than maximum, check the termi-
nals. If necessary, replace the high±tension cord and/or dis-
tributor cap.
7. REINSTALL DISTRIBUTOR CAP
8. RECONNECT HIGH±TENSION CORDS TO SPARK
PLUGS AND IGNITION COIL
9. REINSTALL CYLINDER HEAD REAR COVER
10. REINSTALL NO.3 TIMING BELT COVER
11. REINSTALL THROTTLE BODY
(See throttle body installation in SFI System)
SPARK PLUGS INSPECTION
NOTICE:
wNever use a wire brush for cleaning.
wNever attempt to adjust the electrode gap on used a spark
plug.
wSpark plugs should be replaced every 100,000 km (60,000
miles).
1. DISCONNECT HIGH±TENSION CORDS FROM SPARK
PLUGS
2. INSPECT ELECTRODE
Using a megger (insulation resistance meter), measure the
insulation resistance.
Standard correct insulation resistance:
10 M or more
If the resistance is less than specified, proceed to step 7.
HINT: If a megger is not available, the following simple meth-
od of inspection provides fairly accurate results.
± IGNITION SYSTEM(2JZ±GE)IG±5
Page 1141 of 2543

Simple Method:
(a) Quickly race the engine 5 times to 4,000 rpm.
(b) Remove the spark plug.
(c) Visually check the spark plug.
If the electrode is dry...OK
If the electrode is wet...Proceed to step 4
(d) Reinstall the spark plug.
3. REMOVE SPARK PLUGS
Using a 16 mm plug wrench, remove the 6 spark plugs.
4. VISUALLY INSPECT SPARK PLUGS
Check the spark plug for thread damage and insulator dam-
age.
If abnormal, replace the spark plug.
Recommended spark plug:
ND
PK16R11
NGK
BKR5EP11
5. INSPECT ELECTRODE GAP
Maximum electrode gap for used spark plug:
1.3 mm (0.051 in.)
If the gap is greater than maximum, replace the spark plug.
Correct electrode gap for new spark plug:
1.1 mm (0.043 in.)
NOTICE: If adjusting the gap of a new spark plug, bend only
the base of the ground electrode. Do not touch the tip. Never
attempt to adjust the gap on the used plug.
6. CLEAN SPARK PLUGS
If the electrode has traces of wet carbon, allow it to dry and
then clean with a spark plug cleaner.
Air pressure:
Below 588 kPa (6 kgfVcm
2, 85 psi)
Duration:
20 seconds or less
HINT: If there are traces of oil, remove it with gasoline before
using the spark plug cleaner.
7. REINSTALL SPARK PLUGS
Torque: 18 NVm (180 kgfVcm, 13 ftVlbf)
8. RECONNECT HIGH±TENSION CORDS TO SPARK
PLUGS IG±6
± IGNITION SYSTEM(2JZ±GE)
Page 1142 of 2543

IGNITION COIL INSPECTION
NOTICE: ºColdº and ºHotº in the following sentences express
the temperature of the coils themselves. ºColdº is from±105C
(145F) to 505C (1225F) and ºHotº is from 505C (1225F) to 1005C
(2125F).
1. DISCONNECT IGNITION COIL CONNECTOR
2. DISCONNECT HIGH±TENSION CORD FROM IGNITION
COIL
3. INSPECT PRIMARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the
positive (+) and negative (±) terminals.
Primary coil resistance:
Cold:
0.36±0.55
Hot:
0.45±0.65
If the resistance is not as specified, replace the ignition coil.
4. INSPECT SECONDARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the
positive (+) and high±tension terminals.
Secondary coil resistance:
Cold:
9.0±15.4 k
Hot:
11.4±18.1 k
If the resistance is not as specified, replace the ignition coil.
5. RECONNECT HIGH±TENSION CORD TO IGNITION COIL
6. RECONNECT IGNITION COIL CONNECTOR
DISTRIBUTOR INSPECTION
NOTICE: ºColdº and ºHotº in the following sentences express
the temperature of the coils themselves. ºColdº is from±105C
(145F) to 505C (1225F) and ºHotº is from 505 C (1225F) to 1005C
(2125F).
1. REMOVE DISTRIBUTOR CAP WITHOUT
DISCONNECTING HIGH±TENSION CORDS
2. REMOVE ROTOR
± IGNITION SYSTEM(2JZ±GE)IG±7
Page 1143 of 2543
3. INSPECT AIR GAP
Using SST (G1 and G2 pickups) and a feeler gauge (NE pick-
up), measure the air gap between the signal rotor and pickup
coil projection.
SST 09240±00020 for G1 and G2 pickups
Air gap:
0.2±0.5 mm (0.008±0.020 in.)
If the air gap is not as specified, replace the distributor hous-
ing assembly.
4. DISCONNECT DISTRIBUTOR CONNECTOR
5. INSPECT SIGNAL GENERATOR (PICKUP COIL)
RESISTANCE
Using an ohmmeter, measure the resistance between termi-
nals.
Pickup coil resistance:
Cold
G1 and G
125 ± 200
G2 and G
125 ± 200
NE and G
155 ± 250
Hot
G1 and G
160 ± 235
G2 and G
160 ± 235
NE and G
190 ± 290
If the resistance is not as specified, replace the distributor
housing assembly.
6. RECONNECT DISTRIBUTOR CONNECTOR
7. REINSTALL ROTOR
8. REINSTALL DISTRIBUTOR CAP
IGNITER INSPECTION
(See procedure Spark Test on page IG±4) IG±8
± IGNITION SYSTEM(2JZ±GE)
Page 1144 of 2543
HIGH±TENSION CORD AND CORD
CLAMP
COMPONENTS FOR REMOVAL AND
INSTALLATION
± IGNITION SYSTEM2JZ±GEIG±9