EN(H6DO)(diag)-5
General Description
ENGINE (DIAGNOSTICS)
3. General Description
A: CAUTION
1) Airbag system wiring harness is routed near the
ECM, main relay and fuel pump relay.
CAUTION:
•All airbag system wiring harnesses and con-
nectors are colored yellow. Do not use electri-
cal test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the ECM, TCM,
main relay and fuel pump relay.
2) Never connect the battery in reverse polarity.
•The ECM will be destroyed instantly.
•The fuel injector and other parts will be dam-
aged.
3) Do not disconnect the battery terminals while the
engine is running.
A large counter electromotive force will be generat-
ed in the generator, and this voltage may damage
electronic parts such as ECM etc.
4) Before disconnecting the connectors of each
sensor and ECM, be sure to turn the ignition switch
to OFF. Perform the clear memory mode after con-
necting the connectors.
5) Poor contact has been identified as a primary
cause of this problem. Measure the voltage or re-
sistance of individual sensor or all electrical control
modules using a tapered pin with a diameter of less
than 0.64 mm (0.025 in). Do not insert the pin more
than 5 mm (0.20 in) into the part.
6) Remove the ECM from the located position after
disconnecting two cables on battery.
Otherwise, the ECM may be damaged.
CAUTION:
When replacing the ECM, be careful not to use
the wrong spec. ECM to avoid any damage on
the fuel injection system.
7) Connectors of each sensor in the engine com-
partment and the harness connectors on the en-
gine side and body side are all designed to be
waterproof. Even if the connectors are waterproof,
take care not to allow water to get into them when
washing the vehicle, or when servicing the vehicle
in rainy weather.
8) Use ECM mounting stud bolts as the grounding
point to chassis when measuring voltage and resis-
tance in the passenger compartment.
9) Use the engine ground terminal or engine as-
sembly as the grounding point to chassis when
measuring the voltage and resistance in engine
compartment.
10) Every MFI-related part is a precision part. Do
not drop them.
11) Observe the following cautions when installing
a radio in MFI equipped models.
CAUTION:
•The antenna must be kept as far apart as pos-
sible from control unit. (The ECM is located un-
der the steering column, inside of the
instrument panel lower trim panel.)
•The antenna feeder must be placed as far apart
as possible from the ECM and MFI harness.
•Carefully adjust the antenna for correct
matching.
•When mounting a large power type radio, pay
special attention to the three items mentioned
above.
•Incorrect installation of the radio may affect
the operation of ECM.
12) Release the pressure in the fuel system before
disconnecting the fuel hose. If engine starts during
this operation, run it until it stops.
13) For the model with ABS, the ABS warning light
may illuminate when performing driving test with
jacked-up or lifted-up condition, but this is not a
system malfunction. The reason for this is the
speed difference between the front and rear
wheels. After diagnosis of engine control system,
perform the ABS memory clear procedure of self-
diagnosis function.
B: INSPECTION
Before performing diagnostics, check the following
item which might affect engine problems.
1. BATTERY
1) Measure the battery voltage and specific gravity
of electrolyte.
Standard voltage: 12 V
Specific gravity: Above 1.260
2) Check the condition of the main and other fuses,
and harnesses and connectors. Also check for
proper grounding.
2. ENGINE GROUND
Make sure the engine ground terminal is properly
connected to engine.
EN-02473
PM-3
Schedule
PERIODIC MAINTENANCE SERVICES
2. Schedule
A: MAINTENANCE SCHEDULE 1
Symbols used:
R: Replace
I: Inspection
(R) or (I): Recommended service for safe vehicle operation.
NOTE:(1) This inspection is not required to maintain emission warranty eligibility and it dose not affect the manufacturer's obligations under
EPA's in-use compliance program.
(2) When the vehicle is used in extremely dusty conditions, the air cleaner element should be replaced more often.
(3) ATF filter is maintenance free part. ATF filter needs replacement, when it has physically rust, damaged or ATF leaked.
(4) A tire should be replaced when the tread wear indicator appears as a solid band across the tread. The indicators appear when
the remaining tread has been worn to 1.8 mm (0.071 in) or less.
(5) When the A/C filter is mounted
Maintenance interval
[Number of months or km (miles), whichever occurs first]
Months 3 7.51522.53037.54552.56067.575Continued in
the table below.Remarks× 1,000 km 4.8 12 24 36 48 60 72 81.4 96 108 120
× 1,000 miles 3 7.5 15 22.5 30 37.5 45 52.5 60 67.5 75
1Engine oil R R R R R R R R R R R
2Engine oil filter R R R R R R R R R R R
3Spark plug R R
4Drive belt(s) I I
6Fuel line (I) (I) Note (1)
7Air cleaner element R R Note (2)
8Cooling system I I
9Engine coolant R R
10 Automatic transmis-
sion fluid
I I Note (3)
11 Front & rear differential
oil
I I
12 Brake line I I I I I
13 Brake fluid R R
14 Disc brake pad and
disc
I I I I I
15 Parking brake I I I I I
16 Suspension I I I I I
17 Wheel bearing (I)
18 Axle boots and joints I I I I I
19 Tire rotation I I I I I I I I I I Note (4)
20 Steering system
(Power steering)
I I I I I
21 SRS airbag system Inspect every 10 years
22 A/C filter Replace every 24 months or 24,000 km (15,000 miles). Note (5)
PM-4
Schedule
PERIODIC MAINTENANCE SERVICES
Symbols used:
R: Replace
I: Inspection
(R) or (I): Recommended service for safe vehicle operation.
NOTE:(1) This inspection is not required to maintain emission warranty eligibility and it dose not affect the manufacturer's obligations under
EPA's in-use compliance program.
(2) When the vehicle is used in extremely dusty conditions, the air cleaner element should be replaced more often.
(3) ATF filter is maintenance free part. ATF filter needs replacement, when it has physically rust, damaged or ATF leaked.
(4) A tire should be replaced when the tread wear indicator appears as a solid band across the tread. The indicators appear when
the remaining tread has been worn to 1.8 mm (0.071 in) or less.
(5) When the A/C filter is mounted
Maintenance interval
[Number of months or km (miles), whichever occurs first]
Months Continued from
the table above.
82.5 90 97.5 105112.5120127.5135142.5150
Remarks× 1,000 km 132 144 156 168 180 192 204 216 228 240
× 1,000 miles 82.5 90 97.5 105112.5120127.5135142.5150
1Engine oil R R R R R R R R R R
2Engine oil filter R R R R R R R R R R
3Spark plug R R R
4Drive belt(s) I R I
5Camshaft drive belt I R I
6Fuel line (I) I (I) Note (1)
7Air cleaner element R R R Note (2)
8Cooling system I I I
9Engine coolant R R R
10 Automatic transmis-
sion fluid
I I INote (3)
11 Front & rear differential
oil
I I I
12 Brake line I I I I I
13 Brake fluid R R R
14 Disc brake pad and
disc
I I I I I
15 Parking brake I I I I I
16 Suspension I I I I I
17 Wheel bearing (I) (I)
18 Axle boots and joints I I I I I
19 Tire rotation I I I I I I I I I I Note (4)
20 Steering system
(Power steering)
I I I I I
21 SRS airbag system Inspect every 10 years
22 A/C filter Replace every 24 months or 24,000 km (15,000 miles). Note (5)
PM-20
Brake Line
PERIODIC MAINTENANCE SERVICES
3) Check the pedal stroke.
While the engine is idling, depress the brake pedal
with a 500 N (51 kgf, 112 lb) load and measure the
distance between the brake pedal and steering
wheel. With the brake pedal released, measure the
distance between pedal and steering wheel again.
The difference between the two measured values
must be less than specified value. If the measured
value is more than specification, there is possibility
of entering air in hydraulic unit.
Brake pedal stroke A:
115 mm (4.5 in)/ 500 N (51 kgf, 112 kg) or less
4) Check to see if air is in the hydraulic brake line
by the feel of pedal operation. If air appears to exist
in the line, bleed it from the system.
5) Check for even operation of all brakes, using a
brake tester or by driving the vehicle for a short dis-
tance on a straight road.
3. BRAKE SERVO SYSTEM
1) With the engine off, depress the brake pedal
several times applying the same pedal force. Make
sure the travel distance should not change.
2) With the brake pedal depressed, start the en-
gine. Make sure the pedal should move slightly to-
ward the floor.
3) With the brake pedal depressed, stop the engine
and keep the pedal depressed for 30 seconds.
Make sure the pedal height should not change.
4) A check valve is incorporated into the vacuum
hose part. Disconnect the vacuum hose to inspect
function of check valve.
Make sure air flows from the booster end to engine
end but does not flow in the opposite direction in
the check valve.
5) Check the vacuum hose for cracks or other dam-
age.
NOTE:
When installing the vacuum hose on the engine
and brake booster, do not use soapy water or lubri-
cating oil on their connections.
6) Check the vacuum hose to make sure it is tightly
secured.
(A) Steering wheel
(B) Toe board
PM-00045(B)
(A)
= A
1
12
2
(A) Vacuum hose
(B) Check valve
(C) Engine side
(D) Brake booster side
PM-25
Suspension
PERIODIC MAINTENANCE SERVICES
4. WHEEL ALIGNMENT OF FRONT SUS-
PENSION
1) Check the alignment of front suspension to en-
sure that following items conform to standard val-
ues.
•Toe-in
•Camber
•Caster
•Steering angle
2) When the caster angle does not conform to ref-
erence obviously, visually inspect the following
components and replace deformed parts.
•Suspension components [Strut assembly, cross-
member, front arm, etc.]
•Parts connecting suspension and body
3) When the toe-in and camber are out of standard
value, adjust them so that they conform to standard
value.
4) When the right-and-left turning angles of tire are
out of standard, adjust to standard value.
5. WHEEL ALIGNMENT OF REAR SUS-
PENSION
1) Check the alignment of rear suspension to en-
sure that following items are within standard val-
ues.
•Toe-in
•Camber
•Thrust angle
2) When the camber angle does not conform to
standard value, visually inspect the following com-
ponents. If the deformation is observed, replace the
damaged parts.
•Suspension components [Shock absorber, rear
upper arm, front lateral link, rear lateral link, rear
trailing link, sub frame]
•Parts connecting suspension and body
3) When the toe-in and thrust angle are out of stan-
dard value, adjust them so that they conform to
standard value.
6. OIL LEAKAGE OF STRUT AND SHOCK
ABSORBER
Visually inspect the front strut and rear shock ab-
sorber for oil leakage. Replace the front strut and
rear shock absorber if oil leaks excessively.
7. TIGHTNESS OF BOLTS AND NUTS
Check the bolts and nuts for looseness. Retighten
the bolts and nuts to specified torque. If the self-
locking nuts and bolts are removed, replace them
with new ones.
•Front suspension
•Rear suspension
8. DAMAGE TO SUSPENSION PARTS
Check the following parts and the fastening portion
of the vehicle body for deformation or excessive
rusting which impairs the suspension. If necessary,
replace the damaged parts with new ones. If minor
rust formation, pitting, etc. are noted, remove the
rust and take rust prevention measure.
•Front suspension
•Front arm
•Crossmember
•Strut
•Rear suspension
•Upper arm
•Front lateral link
•Rear lateral link
•Rear trailing link
•Rear sub frame
•Shock absorber
•In the area where salt is sprayed to melt snow on
a road in winter, check suspension parts for dam-
age caused by rust every 12 months after lapse of
60 months. Take rust prevention measures as re-
quired.
PM-29
Steering System (Power Steering)
PERIODIC MAINTENANCE SERVICES
21.Steering System (Power
Steering)
A: INSPECTION
1. STEERING WHEEL
1) Set the steering wheel in a straight-ahead posi-
tion, and check the wheel spokes to make sure
they are correctly set in their specified positions.
2) Lightly turn the steering wheel to the left and
right to determine the point where front wheels start
to move.
Measure the distance of the movement of steering
wheel at the outer periphery of wheel.
Steering wheel free play:
0 — 17 mm (0 — 0.67 in)
Move the steering wheel vertically toward the shaft
to ascertain if there is play in the direction.
Maximum permissible play:
0.5 mm (0.020 in)
3) Drive the vehicle and check the following items
during operation.
(1) Steering force:
The effort required for steering should be
smooth and even at all points, and should not
vary.
(2) Pulled to one side:
Steering wheel should not be pulled to either
side while driving on a level surface.
(3) Wheel runout:
Steering wheel should not show any sign of
runout.
(4) Return factor:
Steering wheel should return to its original posi-
tion after it has been turned and then released.
2. STEERING SHAFT JOINT
When the steering wheel free play is excessive,
disconnect the universal joint of steering shaft and
check it for any play and yawing torque (at the point
of the crossing direction). Also inspect for any dam-
age to sealing or worn serrations. If the joint is
loose, retighten the mounting bolts to the specified
torque.
Tightening torque:
24 N·m (2.4 kgf-m, 17.4 ft-lb)
3. GEARBOX
1) With the vehicle placed on a level surface, turn
the steering wheel 90° in both the left and right di-
rections.
While the wheel is being rotated, reach under the
vehicle and check for looseness in gearbox.
Tightening torque:
60 N·m (6.1 kgf-m, 44.1 ft-lb)
2) Check the boot for damage, cracks or deteriora-
tion.
3) With the vehicle placed on a level surface, quick-
ly turn the steering wheel to the left and right.
While steering wheel is being rotated, check the
gear backlash. If any noise is noticed, adjust the
gear backlash.
4) Apply liquid gasket to at least 1/3 of entire perim-
eter of adjusting screw thread.
5) Tighten the adjusting screw to 25 N·m (2.5 kgf-
m, 18.1 ft-lb) and then loosen.
(1) Steering wheel free play
(1)
PS-00450
PS-00731
PM-00295
WI-62
Vehicle Dynamics Control System
WIRING SYSTEM
WI-08068
VDC-03VDC-03
FRONTABS WHEELSPEEDSENSOR LH
B310
209
2741
12
2539
1212
4026
BW
1
GY
46
B
43
BLgLgBLG
BWLgBYPL
RLGY
B15R232R249
B359
GVREARABS WHEELSPEEDSENSOR LH
REARABS WHEELSPEEDSENSOR RHYAW RATE SENSOR
B
9
LgLgBLG
22
LgBYPL
B97
R2
B98
R1
BY
TWISTED PAIR LINETWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINETWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINE
TWISTEDPAIR LINE
FRONTABS WHEELSPEEDSENSOR RH
4228
12
GOrGB
GOrGBB6
3420
BYBYBY
STEERINGANGLE SENSOR2
RL
1
GY
4
3
B231
CAN JOINTCONNECTOR
RL
LR
B352
3251
VDC CONTROL MODULE
VDC-01B
VDC-01A
LR
REF. TO GROUNDCIRCUIT [GND-02]REF. TO GROUNDCIRCUIT [GND-03-05]
B38
1234 5678910 11 12 13 14 15 16 17 18 19 20B352
B355
B416
34561278
CAN JOINTCONNECTOR
LR
B355
B
15
4
B38
i3Or
Or
Or
i78
PUSH SWICH (TCS OFF SWITCH)
BY
5
15
131415123456789101112
: TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 5 AND 6: TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 3, 4, 7 AND 8
1*
2*
1*2*
1*2*
1*2*
1*2*1*2*
RL
LR
B359
12345
R232(GRAY) (BLACK)
(BLACK)
B15(GRAY)
B6(GRAY)
R249(GRAY)
12
B310
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
B97
12345678910 11 12 13 16 17 18 19 201415
i78(BLUE)
B98(BLACK)
123456 78910 1112 13 16 1714 15 18 19 2021222324
B231
1234
CAN JOINTCONNECTOR
B416
1*2*
1*2*
RL