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a
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GI CAUTKN
PRECAUTIONS TO TAKE WHEN SERVICING AN ELECTRICAL SYSTEM l Note the following items when servicing the electrical system.
l Do not alter the wiring or electrical equipment in any way; this may damage the vehicle or cause a fire
from short-circuiting a circuit or overloading it.
l The negatrve (-) battery cable must be removed first and
rnstalled last. l Do not reptace with fuses exceedrng specified capacity
Cautron
l 8e sure that the ignitton and other switches are off
before disconnectrng or connecting the battery cables.
Failure to do so may damage the semrconductor
components. Caution l Repfacing a fuse with one of a larger capacrty than
desrgnated may damage components or cause a frre.
l Secure harnesses with provrded clamps to take up slack. l Tape areas of the harness
that may rub or bump l When mounting
components, be sure the
against sharp edges to
protect rt from damage. harness IS not caught or
damaged.
Caution
l Clamp all harnesses near vibratrng components (for
example, the engine) to remove slack and to prevent
contact resultrng from vibration. i Drsconnect heatsensitive l Make sure that the
parts (for example, relays
and ECU) when performing connectors are securely
connected when installed.
l Do not handle electrical components roughly or drop
them. maintenance (such as
weldrng) where
temperatures may exceed
80°C [176OFj.
-*
HI
:
.
GI CAUTION
USING ELECTRICAL MEASURING EQUIPMENT
Use Handling precautions Operation Equpment
Test lamp Test to find open or shorted
crrcuits
l Connect the test lamp
between the circuit being
measured and a ground.
l The lamp will lrght if the
circurt is energized to the
point testedA
l Test lamps use 12V t.4W or
3.4W bulbs or light-emitting
diodes (LEOs). Using a
large-capacity bulb may
damage :he Ckil.
Jumper wrre Used to create a temporary
ctrcult . Connect the jumper wire
between the terminals of a
cjrcurt to bypass a switch. l 00 not connect the lumper
wrre from the power source
line to ground; this may
cause burning or other
damage to harnesses or
electrontc components.
Voltmeter Used for measuring the voltage
of a circutt to find possible
opens or shot-k.
l Connect the voltmeter in
parallel wrth the cjrcurt.
l Set the range to the dewed
voltage.
l Use the service hole when measuring the voltage at the
diagnosis connector.
l Connect the positive (+)
probe to the point where
voltage IS to be. measured
and the negatrve (-) probe to
a ground.
l Tie a thin wire to the
posrtive (+) probe to access
narrow terminals.
Ohmmeter Used to find opens and shorts
In the ctrcurt, to confrrm
contrnurty and to measure
reststance.
l Zero the ohmmeter. l Zero the meter after
switching to the measuring
range.
l Before using the ohmmeter,
make sure the ignitron
switch is off or the megatrve
(-) battery cable is
disconnected to prevent
burning or otherwise
damaging the ohmmeter. &--- l Verify that voltage IS not
applied to the circuit
l Connect the probes between
two points in a Circuit.,
t I t
+ Connect the ammeter in
series with the circuit by
touchtng the positive ( +)
probe to the power-srde
terminal and the negative (-
probe to the ground-srde
terminal. Ammeter
Used to check alternator output,
current supplied to the starter.
and dark current wrthrn a circutt. l Set the range to the desired
amperage.
l Connect the ammeter In
series with the circuit. The
ammeter may be burned or
otherwise damaged if it IS
connected in parallel. Note
Dark current IS the constant flow
of current whrle
the ignitron
switch is OFF.
13EGIX-31;
Gl-t 6
TECHNICAL DATA TD
ENGINE ELECTRICAL SYSTEM
l ’ Dark current is the constant flow of current while the ignition switch is OFF. (i.e., engrne control unit, EC-AT control unit, audio, etc.)
l z Standard plug tteq Engine
BP OOHC turbo
Battery Voltage v 12
Type and capacity (2U-hour rate) 55D23t (60Ah)
Dark current
l r mA Max. 20.0
_ Type AC.
Output V-A 12-70
Regulator type Transistorized (bitt-in IC regulator)
Regutated voltage v 14.1--t4.7
Alternator
’ Standard
Brush length mm 1 in] r 21.5 { 0.846 ]
Minimum 8.0 (0.32 )
Drive belt deflection New 5.5-7.0 10.22-0.27 ]
98 N (10 kgf, 22 IM] Used 6-O-7.5 (0.24-0.29 1
mm Iin)
Limit 8.0 IO.31 1
, Type Direct
Starter Output v-kW
Standard
Brush length mm {in] Minimum
Distributor spark advance
Ignition timing BTDC
(TEN terminal of diagnosis connector grounded)
Primary coit
Ignition coil Resistance winding
(at 20°C 168OF)) Secondary coil
winding
NGK
TYW
Spark plug NIPPONDENSO
, ml WP mm (in)
Firing order 12-0.85
17 (0.671
11.5 IO.481
Etectronic spark advance (ESA)
10 f 10
0.81~-0.99Q
IO-16 kfI
BKRGEVXI I**/ BKRSEVXI 1
BKR7EVX-f f
K20PR-TPl l”‘/ KlGPR-TPI 1
K22PR-TP 11
1.0-l .f { 0.039-0.043)
l-3-4-2
GI Reading Wiring Diagrams
Symbols
Symbol Meaning Symbol Meaning
Battery
l Generates electricity through
Resistance 0 A resistor with a constant value.
chemical reaction. l Mainly used to protect electrical
l Supplies direct current to circuits. components in circuits by maintaining
rated voltage.
l Reading resistance values.
Ground (1)
l Connecting point to vehicle body or No.1 color band other ground wire where current flows No.2 color band
-A-
from positive to negative terminal of No.3 mbr band
battery. No.4 color band
1 l Ground (1) indicates a ground point to
body through wire harness.
Ground (2)
l Gound (2) indicates point where
component is grounded directly to
body.
Remarks
l Current will not flow through a circuit if
ground is faulty.
Fuse (1)
0 Melts when current flow exceeds that
specified for circuit, interrupts current
I__q/y)__ now.
Precautions
(box)
l Do not replace with fuses exceeding
Fuse (2) specified capacity.
(Cartridge)
Main fuse/Fusible
Transistor (1)
l Electrical switching component. l Turns on when voltage is applied to Motor
0 Converts electrical energy into
mechanical energy.
Transistor (2)
0 Reading code. a Pulls in and discharges gases and
liquids.
Number of temtinak
Lamp l Emits light and generates heat when Current flows through filament. Cigarette lighter l Electrical coil that generates heat.
Troubleshooting GI
Precautions to take when servicing an electrical system
l Note the following items when servicing the electrical system.
l Do not alter the wiring or electrical equipment in any way; this may damage the vehicle or cause a fire from
short-circuiting a circuit or overloading it. l
The negative (-) battery cable must be removed first and
installed last. l Do not replace with fuses exceeding specified capacity.
1OA
f5A
Zaution
o Be sure that the ignition and other switches are off
Caution
before disconnecting or connecting the battery
l Replacing a fuse with one of a larger capacity than
cables.
designated may damage components or cause a fire.
Failure to do so may damage the semiconductor
components.
0 Tape areas of the
l When mounting l Secure harnesses with provided clamps to take up slack.
harness that may rub or
components, be sure the
bump against sharp
harness is not caught or
edges to protect it from
damaged.
damage.
Zaution
B Clamp all harnesses near vibrating components
(for example, the engine) to remove slack and to
prevent contact resulting from vibration.
D Do not handle electrical components roughly or drop
them.
l Disconnect heat-
sensitive parts (for
example, relays and
ECU) when performing
maintenance (such as
welding) where
temperatures may exceed
80°C (176°F). l Make sure that the
connectors are securely
connected when
installed.
11
Troubleshooting
Using electrical measuring equipment
Equipment USe
Test lamp Test to find open or shorted
H circ”its. operation Handling precautions 0 Connect the test lamp l Test lamps use 12V 1.4W
between the circuit being
or 3.4W bulbs or light-emitting
measured and a ground.
diodes (LEDs). Using .a large-
l The lamp will light if the circuit
capacity bulb may damage the
is energized to the point
CPU.
tested.
I? ‘s
n
Jumper wire
Used to create a temporary 0 Connect the jumper wire
l Do not connect the jumper
circuit. between the terminals of a wire from the power source
circuit to bypass a switch. line to a ground; this may
4 cause burning or other
b damage to harnesses or
electronic components.
M
Voltmeter
Used for measuring the voltage
l Connect the voltmeter in
of a circuit to find possible opens *Connect the positive (+) probe
parallel with the circuit.
or shorts.
to the Point where Voltage is to 0 Set the range to the desired
be measured and the negative
voltage.
(-) probe to a ground.
*Use the service hole when
measuring the voltage at the
diagnosis connector.
‘$$
‘, i_ I/
*Tie a thin wire to the positive
(+) probe to access narrow
terminals.
Ohmmeter
l Zero the ohmmeter.
Used to find opens and shorts in *Zero the meter after switching
the circuit, to confirm continuity l-.&j
to the measuring range.
and to measure resistance. -*-.
0 Before using the ohmmeter,
l Verify that voltage is not make sure the ignition switch
applied to the circuit. is off or the negative (-)
l Connect the probes between battery cable is disconnected
two points in a circuit. _ to prevent burning or
otherwise damaging the
ohmmeter.
Ammeter
l Connect the ammeter in series l Set the range to the desired
Used to check alternator output,
with the circuit by touching the amperage.
current supplied to the starter,
and dark current within a circuit. positive (+) probe to the l Connect the ammeter in series
power-side terminal and the with the circuit. The ammeter
Note
Dark current is the constant flow negative (-) probe to the
ground-side terminal. may be burned or otherwise
damaged if it is connected in
parallel.
of current while the ignition
switch is OFF.
13