ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-19
Operation
VISUAL INSPECTION
Visually check following parts and systems.
INSPECTION ITEM
REFERRING SECTION
Engine oil ––––– level, leakage
Engine coolant ––––– level, leakage
Fuel ––––– level, leakage
A / T fluid ––––– level, leakage
Air cleaner element ––––– dirt, clogging
Battery ––––– fluid level, corrosion of terminal
Water pump belt ––––– tension, damage
Throttle cable ––––– play, installation
Vacuum hoses of air intake system ––––– disconnection,
looseness, deterioration, bend
Connectors of electric wire harness ––––– disconnection, friction
Fuses ––––– burning
Parts ––––– installation, bolt ––––– looseness
Parts ––––– deformation
Other parts that can be checked visually
Also check following items at engine start, if possible
Malfunction indicator lamp
Charge warning lamp
Engine oil pressure warning lamp
Engine coolant temp. meter
Fuel level meter
Tachometer, if equipped
Abnormal air being inhaled from air intake system
Exhaust system ––––– leakage of exhaust gas, noise
Other parts that can be checked visuallySection 0B
Section 0B
Section 0B
Section 0B
Section 0B
Section 0B
Section 6E2
Section 8
Section 6
Section 6H
Section 8 (Section 6 for pressure check)
Section 8
Section 8
6-1-30 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
SCAN TOOL DATACONDITIONNORMAL CONDITION /
REFERENCE VALUES
DESIRED IDLE
(DESIRED IDLE SPEED)At idling with no load after warming up, M / T
at neutral, A / T at “P” range750 r / min
TP SENSOR VOLT
(THROTTLE POSITIONIgnition switch
ON / engine
Throttle valve fully closedMore than 0.2 V(
SENSOR OUTPUT
VOLTAGE)ON / engine
stoppedThrottle valve fully openLess than 4.8 V
INJ PULSE WIDTH
(FUEL INJECTION
At specified idle speed with no load after
warming up2.0 – 3.6 msec.(
PULSE WIDTH)At 2500 r / min with no load after warming up2.0 – 3.6 msec.
IAC FLOW DUTY (IDLE
AIR CONTROL FLOW
DUTY)
At idling with no load after warming up5 – 25%
TOTAL FUEL TRIMAt specified idle speed after warming up–35 – +35%
BATTERY VOLTAGEIgnition switch ON / engine stop10 – 14 V
CANIST PRG DUTY
(EVAP CANISTER
PURGE FLOW DUTY)
––––––––––––0 – 100%
CLOSED THROT POS
(CLOSED THROTTLEThrottle valve at idle positionON(CLOSED THROTTLE
POSITION)Throttle valve opens larger than idle positionOFF
FUEL CUTWhen engine is at fuel cut conditionONFUEL CUTOther than fuel cut conditionOFF
RADIATOR FAN
(RADIATOR FANIgnition switch
ON
Engine coolant temp.:
Lower than 92.5C
Lower than (199F)
OFF
(
CONTROL RELAY)ONEngine coolant temp.:
97.5C (208F) or higherON
ELECTRIC LOAD
Ignition switch ON / Headlight, small light,
heater fan and rear window defogger all
turned OFF
OFF
ELECTRIC LOADIgnition switch ON / Headlight, small light,
heater fan or rear window defogger turned
ON
ON
A / C SWITCH
Engine running after warming up, A / C not
operatingOFF
A/C SWITCHEngine running after warming up, A / C
operatingON
PNP SIGNAL (PARK /
NEUTRAL POSITIONIgnition switch
Selector lever in “P” or “N”
positionP / N Range
NEUTRAL POSITION
SIGNAL) A / T only
g
ONSelector lever in “R”, “D”, “2”
or “L” positionD Range
EGR VALVEAt specified idle speed after warming up0%
FUEL TANK LEVEL––––––––––––0 – 100%
BAROMETRIC PRESS––––––––––––Display the barometric pressure
FUEL PUMP
Within 3 seconds after ignition switch ON or
engine runningON
Engine stop at ignition switch ON.OFF
BRAKE SWIgnition switchBrake pedal is depressingONBRAKE SWg
ONBrake pedal is releasingOFF
BLOWER FANIgnition switchBlower fan switch ONONBLOWER FA Ng
ONBlower fan switch OFFOFF
A / C MAG CLUTCHIgnition switchA / C switch ONONA/C MAG CLUTCHg
ONA / C switch OFFOFF
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-35
CONNECTOR “C02”
TERMINAL
NO.CIRCUITNORMAL
VOLTAGECONDITION
1A / C ON output signal0 VIgnition switch ON
2EGR valve (stepper motor10 – 14 VIgnition switch ON2coil 1)0 – 1 VEngine running at idle speed
3Data link connector10 – 14 VIgnition switch ON
4Heater of HO2S-210 – 14 VIgnition switch ON
5Power source10 – 14 VIgnition switch ON
6Power source10 – 14 VIgnition switch ON
7Power source for buck-up10 – 14 VIgnition switch ON and OFF
8EGR valve (stepper motor10 – 14 VIgnition switch ON8coil 3)10 – 14 VEngine running at idle speed
9EGR valve (stepper motor10 – 14 VIgnition switch ON9coil 2)10 – 14 VEngine running at idle speed
10Main relay10 – 14 VIgnition switch OFF10Main relay0.4 – 1.5 VIgnition switch ON
112-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at 2-range
12N-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at N-range
13Heated oxygen sensor-2Refer to DTC P0130 diag. flow table
14D-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at D-range
15R-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at R-range
16A/C input signal
10 – 14 VIgnition switch ON
A / C switch OFF
16A/C in ut signal
0 – 2 VIgnition switch ON
A / C switch ON
17EGR valve (stepper motor10 – 14 VIgnition switch ON17coil 4)0 – 1 VEngine running at idle speed
18Radiator fan control relay
10 – 14 V
Ignition switch ON
Engine coolant temp.: Below 92.5C
(199F)
18Radiator fan control relay
0 – 1 V
Ignition switch ON
Engine coolant temp.: Below 97.5C
(208F) or higher
19Fuelpumprelay0 – 1 VFor 2 seconds after ignition switch ON19Fuel um relay10 – 14 VAfter the above time
20Blank——
21P-range signal (A / T)
Indication
deflection
repeated
0 V and
10 – 14 V
Ignition switch ON
22Fuel level sensor (gauge)
0 – 2 VIgnition switch ON
Fuel tank fully filled
22Fuel level sensor (gauge)
4.5 – 7.5 VIgnition switch ON
Fuel tank emptied
23L-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at L-range
24Blank——
6-1-52 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Throttle
position
sensorTo other sensors
To other sensors
DTC P0121 THROTTLE POSITION CIRCUIT RANGE / PERFORMANCE
PROBLEM
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE
After engine warmed up.
While vehicle running at specified engine speed.
No change in intake manifold pressure (constant throttle opening)
Difference between actual throttle opening (detected from TP sensor)
and opening calculated by ECM (PCM) (Obtained on the basis of
engine speed and intake manifold pressure) in larger than specified
value.
2 driving cycle detection logic, continuous monitoringTP sensor malfunction
High resistance in the circuit
ECM (PCM) malfunction
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Turn ignition switch OFF. Clear DTC with ignition switch ON, check vehicle and environmental condition for:
–Indication of fuel level meter in combination meter: 1 / 4 or more
–Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
–Intake air temp.: between –10C and 80C (14F and 176F)
–Engine coolant temp.: 70C, 158F or higher
2) Warm up engine to normal operating temperature.
3) Increase vehicle speed to 30 – 40 mph, 50 – 60 km / h in 3rd gear or “D” range and hold throttle valve at that
opening position for 1 min.
4) Stop vehicle.
5) Check DTC in “DTC” mode and pending DTC in “ON BOARD TEST” or “PENDING DTC” mode.
6-1-82 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
1) 2) 3) 4) 41 – 46 mph
(65 – 75 km / h)
28 – 34 mph
(45 – 55 km / h)
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and tester, on a level road.
1) Turn ignition switch OFF.
Clear DTC with ignition switch ON, check vehicle and environmental condition for:
–Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
–Intake air temp.: between –10C and 80C (14F and 158F)
–Engine coolant temp.: 70C, 230F or higher
2) Start engine and drive vehicle at 41 – 46 mph, 65 – 75 km / h for 8 min. or longer.
While this driving, if “Catalyst Monitoring TEST COMPLETED” is displayed in “READINESS TESTS” mode and
DTC is not displayed in “DTC” mode, confirmation test is completed.
If “TEST NOT COMPLTD” is still being displayed, continue test driving.
3) Decrease vehicle speed at 28 – 34 mph, 45 – 55 km / h, and hold throttle valve at that opening position for 2 min.
and confirm that short term fuel trim vary within –20% –+20% range.
4) Stop vehicle (do not turn ignition switch OFF) and confirm test results according to following “Test Result Con-
firmation Flow Table”.
Test Result Confirmation Flow Table
STEPACTIONYESNO
1Check DTC in “DTC” mode and pending DTC in
“ON BOARD TEST” or “PENDING DTC” mode.
Is DTC or pending DTC displayed?Proceed to applicable
DTC Diag. Flow Table.Go to Step 2.
2Set scan tool to “READINESS TESTS” mode and
check if testing has been completed.
Is test completed?No DTC is detected
(confirmation test is
completed).Repeat DTC
confirmation
procedure.
(a)
1
2
3
(a)
(a)
6
74
5
(a)
M/TM/T
9
(a)
4
7
(a)
8
1. Right mounting
2. Right mounting
bracket
3. Left mounting
4. Left mounting bracket
5. Left mounting bracket
stiffener6. Rear mounting
7. Rear mounting
bracket
8. Rear torque rod
9. Rear torque rod
bracket
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-67
INSTALLATION
1) Lift engine with transmission into engine compartment, but do
not remove support device.
2) Install engine right mounting to right mounting bracket and stiff-
ener.
3) Install engine left mounting to body.
4) Install rear mounting to body (For M/T model)
Install torque rod (For A/T model)
5) Tighten bolts and nuts of all parts installed in above steps 2),
3) and 4) or 5) to specified torque.
Tightening Torque
(a): 55 N
.m (5.5 kg-m, 40.0 lb-ft)
6) Remove support device.
7) Reverse removal procedures for installation of remainder.
Push in each drive shaft joint fully so that snap ring engages
with differential gear or center bearing support.
Use care not to damage oil seal lip when inserting.
Clamp electric wire securely.
8) Adjust clutch pedal free travel by referring to Section 7C. (M / T)
Adjust gear select cable and A / T throttle pressure control
cable, referring to Section 7B. (A / T)
9) Adjust gear shift control lever by referring to Section 7A. (M / T)
10) Adjust accelerator cable play by referring to Section 6E.
11) Refill transmission with gear oil. (A / T fluid for A / T model) by
referring to Section 0B.
12) Refill engine with engine oil by referring to Section 0B.
13) Refill cooling system by referring to Section 6B.
14) Adjust A / C compressor and / or P / S pump drive belt referring
to Section 0B. (if equipped)
15) Check P / S fluid level by referring to Section 3B1. (if equipped)
16) Upon completion of installation, verify that there is no fuel leak-
age, coolant leakage, transmission oil leakage or exhaust gas
leakage at each connection.
6B-4 ENGINE COOLING
COOLANT (WATER) TEMP. GAUGE
The coolant temp. gauge is included in engine coolant temp. (ECT)
sensor (1). This gauge activates a temp. meter in the instrument
cluster.
DIAGNOSIS
ConditionPossible CauseCorrection
Engine overheatsLoose or broken water pump belt
Not enough coolant
Faulty thermostat
Faulty water pump
Dirty or bent radiator fins
Coolant leakage on cooling system
Defective cooling fan motor
Plugged radiator
Faulty radiator cap
Maladjusted ignition timing
Dragging brakes
Slipping clutchAdjust or replace.
Check coolant level and add as
necessary.
Replace.
Replace.
Clean or remedy.
Repair.
Check and replace as
necessary.
Check and replace radiator as
necessary.
Replace.
Adjust.
Adjust brake.
Adjust or replace.
2. Outlet hose
6B-6 ENGINE COOLING
COOLING SYSTEM FLUSH AND REFILL
WARNING:
To help avoid danger of being burned, do not remove radia-
tor cap while engine and radiator cap while engine and ra-
diator are still hot. Scalding fluid and steam can be blown
out under pressure if cap is taken off too soon.
1) Remove radiator cap when engine is cool:
Turn cap counterclockwise slowly until it reaches a “stop”.
(Do not press down while turning it.)
Wait until pressure is relieved (indicated by a hissing sound)
then press down on cap and continue to turn it counterclock-
wise.
2) With radiator cap removed, run engine until upper radiator
hose is hot (this shows that thermostat is open and coolant is
flowing through system).
3) Stop engine and open radiator drain plug (1) to drain coolant.
4) Close drain plug. Add water until system is filled and run engine
until upper radiator hose is hot again.
5) Repeat Steps 3) and 4) several times until drained liquid is
nearly colorless.
6) Drain system and then close radiator drain plug tightly.
7) Disconnect reservoir tank hose from radiator. Remove reser-
voir tank and pour out any fluid. Scrub and clean inside of tank
with soap and water.
Flush it well with clean water and drain. Reinstall tank and
hose.
8) add 50 / 50 mixture of GOLDEN CRUISER 1200 (Good quality
ethylene glycol anti-freeze) and water to radiator and tank.
Fill radiator to the base of radiator filler neck and reservoir tank
to “FULL” level mark. Reinstall reservoir tank cap.
9) Run engine, with radiator cap removed, until radiator upper
hose is hot.
10) With engine idling, add coolant to radiator until level reaches
the bottom of filler neck. Install radiator cap, making sure that
the ear of cap lines up with reservoir tank hose.