sensor TOYOTA SUPRA 1995 Service Repair Manual

CAMSHAFT POSITION SENSORS
INSPECTION
NOTICE: ºColdº and ºHotº in the following sentences express
the temperature of the sensors themselves. ºColdº is from
±105C (145F) to 505C (1225F) and ºHotº is from 505C (1225F) to
1005C (2125F).
1. DISCONNECT CAMSHAFT POSITION SENSOR
CONNECTORS
2. INSPECT CAMSHAFT POSITION SENSOR RESISTANCE
Using an ohmmeter, measure the resistance between termi-
nals.
Resistance:
Cold
NIPPONDENSO
835±1,400

AISAN
985±1,600

Hot
NIPPONDENSO
1,060±1,645

AISAN
1,265±1,890

If the resistance is not as specified, replace the camshaft
position sensor.
3. RECONNECT CAMSHAFT POSITION SENSOR
CONNECTORS IG±24
± IGNITION SYSTEM(2JZ±GTE)

CRANKSHAFT POSITION SENSOR
INSPECTION
NOTICE: ºColdº and ºHotº in the following sentences express
the temperature of the sensors themselves. ºColdº is from
±105C (145F) to 505C (1225F) and ºHotº is from 505C (1225F) to
1005C (2125F).
1. REMOVE NO.2 AIR TUBE FOR CAC
2. DISCONNECT CRANKSHAFT POSITION SENSOR
CONNECTOR
3. INSPECT CRANKSHAFT POSITION SENSOR
RESISTANCE
Using an ohmmeter, measure the resistance between termi-
nals.
Resistance:
Cold
NIPPONDENSO
835±1,400

AISAN
985±1,600

Hot
NIPPONDENSO
1,060±1,645

AISAN
1,265±1,890

If the resistance is not as specified, replace the crankshaft
position sensor.
4. RECONNECT CRANKSHAFT POSITION SENSOR
CONNECTOR
5. REINSTALL NO.2 AIR TUBE FOR CAC
IGNITER INSPECTION
(See procedure Spark Test on page IG±22)
± IGNITION SYSTEM(2JZ±GTE)IG±25

CAMSHAFT POSITION SENSOR
COMPONENTS FOR REMOVAL AND
INSTALLATION
CAMSHAFT POSITION SENSOR
REMOVAL
Installation is in the reverse order of removal.
1. DISCONNECT IAC VALVE CONNECTOR
2. DISCONNECT AIR HOSE FROM IAC VALVE
3. REMOVE ENGINE HANGER
Remove the 2 bolts, ground strap and engine hanger.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
4. DISCONNECT CAMSHAFT POSITION SENSOR
CONNECTORS
5. REMOVE CAMSHAFT POSITION SENSORS
Remove the 4 bolts, 2 camshaft position sensors and 2 gas-
kets.
Torque: 6.4 NVm (65 kgfVcm, 56 in.Vlbf)
IG±28± IGNITION SYSTEM2JZ±GTE

CRANKSHAFT POSITION SENSOR
COMPONENTS FOR REMOVAL AND
INSTALLATION
± IGNITION SYSTEM2JZ±GTEIG±29

CRANKSHAFT POSITION SENSOR
REMOVAL
Installation is in the reverse order of removal.
1. REMOVE GENERATOR
(See generator removal in Charging System)
2. DISCONNECT CRANKSHAFT POSITION SENSOR
CONNECTOR
(a) Disconnect the sensor connector from the bracket.
(b) Disconnect the sensor connector from the wiring connector.
3. REMOVE CRANKSHAFT POSITION SENSOR
(a) Disconnect the wire clamp from the cylinder block.
(b) Remove the bolt and crankshaft position sensor.
Torque: 8.8 NVm (90 kgfVcm, 78 in.Vlbf)
IG±30± IGNITION SYSTEM(2JZ±GTE)

SERVICE SPECIFICATIONS
SERVICE DATA
 Firing order ± 1 ± 5 ± 3 ± 6 ± 2 ± 4 
 
 
 
Spark plug 
 
 
 
Recommended spark plug ND
NGK
Correct electrode gap for new plug
Maximum electrode gap for used plug 
 
 
 
PK20R11
BKR6EP11
1.1 mm (0.043 in.)
1.3 mm (0.051 in.)
 
 
Ignition coil 
 
Primary coil resistance at cold
at hot 
 
0.54±0.84

0.68±0.98

 
 
 
 
Camshaft
position
sensor 
 
 
 
Resistance at cold

at hot 
 
 
 
835±1,400
for NIPPONDENSO
985±1,600
for AISAN
1,060±1,645
for NIPPONDENSO
1,265±1,890
for AISAN
 
 
 
 
Crankshaft
position
sensor 
 
 
 
Resistance at cold
at hot 
 
 
 
835±1,400
for NIPPONDENSO
985±1,600
for AISAN
1,060±1,645
for NIPPONDENSO
1,265±1,890
for AISAN
TORQUE SPECIFICATIONS
 Part tightened NVm kgfVcm ftVlbf Ignition coil bracket x Cylinder head 8.8 90 78 in.Vlbf 
 Ignition coil x Ignition coil bracket 
 2.5 
 35 
 3.4 in.Vlbf
 Camshaft position sensor x Cylinder head 8.8 90 78 in.Vlbf
 Engine hanger x Cylinder head 39 400 29
 Crankshaft position sensor x Oil pump 8.8 90 78 in.Vlbf
± IGNITION SYSTEM2JZ±GTEIG±31

11. Care must be taken when jacking up and supporting the
vehicle. Be sure to lift and support the vehicle at the proper
locations (See page IN±36).
(a) If the vehicle is to be jacked up only at the front or rear
end, be sure to block the wheels at the opposite end in
order to ensure safety.
(b) After the vehicle is jacked up, be sure to support it on
stands. It is extremely dangerous to do any work on a
vehicle raised on a jack alone, even for a small job that
can be finished quickly.
12. Observe the following precautions to avoid damage to the
following parts:
(a) Do not open the cover or case of the ECU, ECM, PCM
or TCM unless absolutely necessary. (If the IC terminals
are touched, the IC may be destroyed by static
electricity.)
(b) To disconnect vacuum hoses, pull on the end, not the
middle of the hose.
(c) To pull apart electrical connectors, pull on the connector
itself, not the wires.
(d) Be careful not to drop electrical components, such as
sensors or relays. If they are dropped on a hard floor,
they should be replaced and not reused.
(e) When steam cleaning an engine, protect the distributor,
air filter, and VCV from water.
(f) Ne ve r use an imp a ct wre n ch to re mo ve or in sta ll
temperature switches or temperature sensors.
(g) When checking continuity at the wire connector, insert
the tester probe carefully to prevent terminals from
bending.
(h) When using a vacuum gauge, never force the hose onto
a connector that is too large. Use a step±down adapter
instead. Once the hose has been stretched, it may leak.
13. Tag hoses before disconnecting them:
(a) When disconnecting vacuum hoses, use tags to identify
how they should be reconnected.
(b) After completing a job, double check that the vacuum
hoses are properly connected. A label under the hood
shows the proper layout.
± INTRODUCTIONGENERAL REPAIR INSTRUCTIONSIN±7

When the negative (±) terminal cable is disconnected from
the battery, memory of the clock and audio systems will be
cancelled. So before starting work, make a record of the con-
tents memorized by the audio memory system. When work
is finished, reset the audio systems as before and adjust the
clock.
This vehicle has power tilt and power telescopic steering,
power seat, power outside rear view mirror and power shoul-
der belt anchorage, which are all equipped with memory
function, it is not possible to make a record of the memory
contents. So when the work is finished, therefore it will be
necessary to explain this fact to the customer, and ask the
customer to adjust the features and reset the memory.
To avoid erasing the memory of each memory system, never
use a back±up power supply from outside the vehicle.
3. Even in cases of a minor collision where the SRS does not
deploy, the steering wheel pad, front passenger airbag
assembly and front airbag sensors should be inspected (See
pages RS±10, 20, 30).
4. Never use SRS parts from another vehicle. When replacing
parts, replace them with new parts.
5. Before repairs, remove the airbag sensors if shocks are likely
to be applied to the sensors during repairs.
6. Never disassemble and repair the front airbag sensors,
center airbag sensor assembly, steering wheel pad or front
passenger airbag assembly in order to reuse it.
7. If the front airbag sensors, center airbag sensor assembly,
steering wheel pad, front passenger airbag assembly or seat
belt pretensioners have been dropped, or if there are cracks,
dents or other defects in the case, bracket or connector,
replace them with new ones.
8. Do not expose the front airbag sensors, center airbag sensor
assembly, steering wheel pad, front passenger airbag
assembly or seat belt pretensioners directly to hot air or
flames.
9. Use a volt/ohmmeter with high impedance (10 k
/V
minimum) for troubleshooting of the electrical circuit.
10. Information labels are attached to the periphery of the SRS
components. Follow the instructions on the notices.
11. After work on the supplemental restraint system is
completed, perform the SRS warning light check (See page
RS±44).
± INTRODUCTIONPRECAUTIONIN±11

Front Airbag Sensor
1. Never reuse the front airbag sensors involved in a collision
that activated the supplemental restraint system. (Replace
both left and right airbag sensors.)
2. Install the front airbag sensor with the arrow on the sensor
facing toward the front of the vehicle.
3. The front airbag sensor set bolts have been anti±rust treated.
When the sensor is removed, always replace the set bolts
with new ones.
4. The front airbag sensor is equipped with an electrical
connection check mechanism. Be sure to lock this
mechanism securely when connecting the connector. If the
connector is not securely locked, a malfunction code will be
detected by the diagnosis system (See page RS±7).
Spiral Cable (in Combination Switch)
The steering wheel must be fitted correctly to the steering col-
umn with the spiral cable at the neutral position, otherwise
cable disconnection and other troubles may result. Refer to
page SR±14 of this manual concerning correct steering
wheel installation.
Steering Wheel Pad (with Airbag)
1. When removing the steering wheel pad or handling a new
steering wheel pad, it should be placed with the pad top
surface facing up.
In this case, the twin±lock type connector lock lever should
be in the locked state and care should be taken to place it so
the connector will not be damaged. In addition do not store
a steering wheel pad on top of another one. Storing the pad
with its metallic surface up may lead to a serious accident if
the airbag inflates for some reason.
2. Never measure the resistance of the airbag squib. (This
may cause the airbag to deploy, which is very
dangerous.)
3. Grease should not be applied to the steering wheel pad and
the pad should not be cleaned with detergents of any kind.
4. Store the steering wheel pad where the ambient temperature
remains below 93°C (200°F), without high humidity and
away from electrical noise. IN±12
± INTRODUCTIONPRECAUTION

5. When using electric welding, first disconnect the airbag
connector (yellow color and 2 pins) installed on the glove
compartment finish plate at the left side of the glove
compartment before starting work.
6. When disposing of a vehicle or the airbag assembly
alone, the airbag should be deployed using an SST
before disposal (See page RS±25).
Perform the operation in a safe place away from electri-
cal noise.
Center Airbag Sensor Assembly
1. Never reuse the center airbag sensor assembly involved in
a collision when the SRS has deployed.
2. The connectors to the center airbag sensor assembly should
be connected or disconnected with the sensor mounted on
the floor. If the connectors are connected or disconnected
while the center airbag sensor assembly is not mounted to
the floor, it could cause undesired ignition of the
supplemental restraint system.
3. Work must be started after 90 seconds from the time the
ignition switch is turned to the LOCK position and the
negative (±) terminal cable is disconnected from the battery,
even if only loosening the set bolts of the center airbag
sensor assembly. IN±14
± INTRODUCTIONPRECAUTION