Ignition SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

6-1-80 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
1. EGR valve coupler
INSPECTION
STEPACTIONYESNO
1Was ENGINE DIAG. FLOW TABLE performed?Go to Step 2.Go to ENGINE
DIAG. FLOW
TABLE.
2Do you have SUZUKI scan tool?Go to Step 3.Go to Step 5.
3EGR Valve Operation Check
1) With ignition switch OFF, install SUZUKI scan tool.
2) Check EGR system referring to section 6E2.
Is it in good condition?Go to Step 4.Go to Step 5.
4MAP Sensor Check
1) Check MAP sensor for performance referring to “MAP
Sensor Check” in DTC P0105 Diag. Flow Table.
Is check result satisfactory?Intermittent trouble
or faulty ECM
(PCM) Check for in-
termittent referring
to “Intermittent and
Poor Connection” in
section 0A.Repair or replace.
5EGR Valve Power Supply Circuit Check
1) With ignition switch OFF, disconnect EGR valve
coupler.
2) With ignition switch ON, check voltage between C13-2
and ground, C13-5 and ground. See Fig. 1.
Is each voltage 10 – 14 V?Go to Step 6.“R/B” wire.
6EGR Valve Stepping Motor Coil Circuit Check
1) With ignition switch OFF, connect EGR valve coupler
and disconnect ECM (PCM) couplers.
2) Check resistance between C02-6 and C02-2, C02-8,
C02-9, C02-17.
Is each resistance 20 – 24 Ω at 20C, 68F?Go to Step 7.Faulty “R/Y”,
“R/Bl”, “R”, “R/W”
wire or EGR valve.
7MAP Sensor Check
1) Check MAP sensor for performance referring to
“MAP Sensor Check” in DTC P0105 Diag. Flow Table.
Is check result satisfactory?EGR passage
clogged or EGR
valve malfunction.
If all above are OK,
intermittent trouble
or faulty ECM.
Check for intermit-
tent referring to
“Intermittent and
Poor Connection” in
section 0A.Repair or replace.
Fig. 1 for step 5

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.

6-1-84 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
1. EVAP canister purge valve
2. To main relay
3. ECM (PCM)
4. Sensed information
5. Intake manifold
6. EVAP canister
7. Tank pressure control valve
8. Fuel vapor line
9. Fuel tank
Fig. 1 for Step 1
DTC P0443 EVAP PURGE CONTROL VALVE CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE
Canister Purge control valve circuit is opened
or shorted.
“V/R” circuit open or short

“R/B” circuit open

Canister purge valve malfunction
DTC CONFIRMATION PROCEDURE
1) Clear DTC with ignition switch ON.
2) Select “DTC” mode on scan tool and check DTC.
INSPECTION
STEPACTIONYESNO
1Check EVAP canister purge valve operation
1) With ignition switch OFF, disconnect coupler
from canister purge valve.
2) Check resistance of EVAP canister purge
valve.
Resistance between
two terminals : 30 – 34 Ω at 20C (68F)
Resistance between
terminal and body : 1M Ω or higher
Is it as specified?“V/R” circuit open or
short.Replace EVAP canister
purge valve.

Radiator cooling fan relay
To
ECM
Main
relay
Relay
box
“RDTR”
(Radiator fan)Radiator cooling
Fan motor
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-85
DTC P0480 RADIATOR COOLING FAN CONTROL SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

Low voltage at terminal C02-18 when engine coolant
temp. is 92C, 197F below.
2 driving cycle detection logic, continuous monitoring.
“B/W” or “P/G” circuit open or short

Radiator cooling fan relay malfunction

ECM (PCM) malfunction
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Warm up engine until radiator cooling fan starts to operate.
4) Check pending DTC in “ON BOARD TEST” or “PENDING DTC” mode and DTC in “DTC” mode.

6-1-86 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Fig. 1 for Step 2 Fig. 2 for Step 3 Fig. 3 for Step 3
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Check Radiator Cooling Fan Relay and Its Circuit.
1) Turn ignition switch ON.
2) Check for voltage at terminal C02-18 of ECM
(PCM) connector connected, under following
condition. See Fig. 1.
When engine coolant temp. is lower than
92C, 197F and A / C switch turns OFF:
10 – 14 V
Is voltage as specified?Intermittent trouble or
faulty ECM (PCM).
Check for intermittent
referring to “Intermittent
and Poor Connection”
in Section 0A.Go to Step 3.
3Check Radiator Cooling Fan Control Relay.
1) Turn ignition switch OFF and remove radiator
cooling fan relay.
2) Check for proper connection to the relay at
“B/W” and “P/G” wire terminals.
3) If OK, then measure resistance between
terminals a and b. See Fig. 2 and 3.
Is it 100 – 150 Ω?“B/W” or “P/G” circuit
open or short.
If wires and connections
are OK, substitute a
known-good ECM
(PCM) and recheck.Replace radiator
cooling fan relay.

6-1-88 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Fig. 1 for Step 3 Fig. 2 for Step 4
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE
DIAG. FLOW
TABLE”.
2Does speedometer indicate vehicle speed?Go to Step 3.Speedometer
cable disconnected
or broken.
3Check VSS and Its Circuit.
1) Disconnect ECM connector with ignition switch OFF.
2) Check for proper connection to ECM (PCM) at terminal
C03-2.
3) If OK, then connect ohmmeter between terminal
C03-2 of ECM (PCM) connector and body ground.
4) Hoist front end of vehicle and lock front right tire.
5) Turn front left tire slowly.
Does ohmmeter indicator deflect between 0 and infinity a
few times while tire is turned one revolution?
See Fig. 1.Intermittent trouble
or faulty ECM.
Check for
intermittent
referring to
“Intermittent and
Poor Connection”
in section 0A.Go to Step 4.
4Check VSS.
1) Remove combination meter.
2) Connect ohmmeter between “VSS” terminal and “GND”
terminal of combination meter and turn cable joint of
speedometer with a screwdriver. Ohmmeter indicator
should move back and forth between 0 and infinity
4 times while cable joint is turned one full revolution.
See Fig. 2.
Is it in good condition?“P”, “Y/G” or “B/Bl”
wire open or short,
or poor connection.Replace VSS.

Output shaft speed sensor (on A / T)
Counter
shaft
gear
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-89
DTC P0500 VEHICLE SPEED SENSOR (VSS) MALFUNCTION FOR A / T
VEHICLE
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

While fuel is kept cut at lower than 4000 r / min for
longer than 4 sec.

VSS signal not inputted.
2 driving cycle detection logic, continuous
monitoring.
“P” or “Bl” circuit open or short.

Vehicle speed sensor malfunction.

Foreign material being attached or sensor installed
improperly.

Gear damaged.
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 and then ON.
2) Clear DTC and warm up engine to normal operating temperature.
3) Increase vehicle speed to 50 mph, 80 km / h in “2” range.
4) Release accelerator pedal and with engine brake applied, keep vehicle coasting (fuel cut condition) for 4 sec.
or more.
5) Stop vehicle and check DTC and pending DTC.

6-1-90 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Fig. 1 for Step 2 Fig. 2 for Step 3
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE
DIAG. FLOW
TABLE”.
2Check VSS for Resistance.
1) Disconnect VSS connection with ignition switch OFF.
2) Check for proper connection to VSS at “P” and “Bl” wire
terminals.
3) If OK, then check resistance of VSS. See Fig. 1.
Resistance between terminals : 100 – 300 Ω
Resistance between terminal
and transmission : 1 MΩ or more
Are check result satisfactory?Go to Step 3.Replace VSS.
3Check Visually VSS and Counter Shaft Gear for the
Following. See Fig. 2.

No damage

No foreign material attached

Correct installation
Are they in good condition?“P” or “Bl” wire
open or shorted to
ground or poor
C03-2 or C03-8
connection.
If wires and
connections are
OK, intermittent
trouble or faulty
ECM (PCM).
Check for
intermittent
referring to
“Intermittent and
Poor Connection”
in section 0A.Clean, repair or
replace.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-91
Relay box
Main fuseMain relay
IAC valveTo other valve
DTC P0505 IDLE CONTROL SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

No closed signal to IAC valve is detected after
engine start.
2 driving cycle detection logic, continuous monitoring.
“R/B”, “V/W” or “B” circuit open or short

IAC valve malfunction

ECM (PCM) malfunction
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Start engine and run it at idle for 1 min.
4) Check DTC and pending DTC.

6-1-92 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Fig. 1 for Step 1 Fig. 2 for Step 2
When using SUZUKI scan tool: When not using SUZUKI scan tool:
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Check Idle Air Control System.
When using SUZUKI scan too:
1) Connect SUZUKI scan tool to DLC with ignition
switch OFF, set parking brake and block drive
wheels.
2) Warm up engine to normal operating
temperature.
3) Clear DTC and select “MISC TEST” mode on
SUZUKI scan tool. See Fig. 1.
Is it possible to control (increase and reduce)
engine idle speed by using SUZUKI scan tool?
When not using SUZUKI scan tool:
1) Remove IAC valve from throttle boy referring to
“IAC Valve Removal” in Section 6E2.
2) Check IAC valve for operation referring to “IAC
Valve Inspection” in Section 6E2. See Fig. 2.
Is check result satisfactory?Intermittent trouble or
faulty ECM (PCM).
Check for intermittent
referring to “Intermittent
and Poor Connection”
in Section 0A.Go to Step 3.
3Check Wire Harness for Open and Short.
1) Turn ignition switch OFF.
2) Disconnect IAC valve connector.
3) Check for proper connection to IAC valve at
each terminals.
4) If OK, disconnect ECM (PCM) connector.
5) Check for proper connection to ECM (PCM) at
C01-6 terminal.
6) If OK, check “R/B”, “V/W” and “B” circuit for
open and short.
Are they in good condition?Replace IAC valve and
recheck.Repair or replace.