Isc SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

6-1-74 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
INSPECTION
NOTE:
If starter circuit is open (i.e., start signal circuit is OK but starter fails to run), this DTC is stored in memory
at starter switch ON, even though CKP sensor is in good condition.
When starter motor fails to run and this DTC appears, check starter circuit first.
STEP
ACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Is there DTC P1500 (Engine starter signal circuit)?Go to DTC P1500
Diag. Flow Table.Go to Step 3.
3Check CKP Sensor for Resistance.
1) Disconnect CKP sensor connector with ignition
switch OFF.
2) Then check for proper connection to CKP sensor
at “W” and “B” wire terminals.
3) If OK, measure sensor resistance between
terminals. See Fig. 1.
CKP sensor resistance: 360 – 460 Ω at 20C,
68F
4) Measure resistance between each terminal and
ground.
Insulation resistance: 1 MΩ or more.
Were measured resistance valves in step 3) and 4)
as specified?Go to Step 4.Replace CKP sensor.
4Check visually CKP sensor and pulley for the
following. See Fig. 2.

Damage

No foreign material attached.

Correct installation.
Are they in good condition?“W” or “B” wire open or
shorted to ground, or
poor connection at
C01-23 or C01-24.
If wire and connection
are OK, intermittent
trouble or faulty ECM
(PCM).
Recheck for
intermittent referring
to “Intermittent and
Poor Connection” in
Section 0A.Clean, repair or
replace.
Fig. 1 for Step 3 Fig. 2 for Step 4

6-1-76 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Check CMP Sensor and connector for proper
installation.
Is CMP sensor installed properly and connector
connected securely?Go to Step 3.Correct.
3Check Wire Harness and Connection.
1) Disconnect connector from CMP sensor.
2) Check for proper connection to CMP sensor at
each terminal.
3) If OK, turn ignition switch ON and check for voltage
at each terminal of sensor connection
disconnected. See Fig. 1.
Terminal “B+”: 10 – 14 V
Terminal “Vout”: 4 – 5 V
Terminal “GND”: – 0 V
Is check result satisfactory?Go to Step 5.Go to Step 4.
4Was terminal “Vout” voltage out of specification in
Step 3 check?“B/W” wire open,
short or poor
connection. If wire and
connection are OK,
substitute a known-
good ECM (PCM) and
recheck.“B/W” or “B” wire
open, short or poor
connection.
5Check Ground Circuit for Open.
1) Turn ignition switch OFF.
2) Check for continuity between “GND” terminal of
CMP sensor connector and engine ground.
Is continuity indicated?Go to Step 6.“B” wire open or poor
ground connection.
6Check CMP Sensor for Operation.
1) Remove CMP sensor from sensor case.
2) Remove metal particles on end face of CMP
sensor, if any.
3) Connect each connector to ECM (PCM) and CMP
sensor.
4) Turn ignition switch ON.
5) Check for voltage at terminal C01-11 of connector
connected to ECM (PCM) by passing magnetic
substance (iron) while keeping approximately
1 mm (0.03 in.) gap with respect to end face of
CMP sensor. See Fig. 2 and 3.
Does voltage vary from low (0 – 1 V) to high (4 – 5 V)
or from high to low?Go to Step 7.Replace CMP sensor.

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

6-1-84 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.

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.

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.

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.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-101
1. Fuel injector
2. Delivery pipe
3. Fuel regulator
4. Fuel filter
5. Fuel pump
Special Tool
(A) Gauge (09912-58441)
(B) Hose (09912-58431)
(C) 3-way joint (09912-58490)
TABLE B-3 FUEL PRESSURE CHECK
INSPECTION
STEPACTIONYESON
11) Release fuel pressure from fuel feed line.
2) Install fuel pressure gauge.
3) Check fuel pressure by repeating ignition switch
ON and OFF.
Is fuel pressure then 270 – 310 kPa
(2.7 – 3.1 kg / cm
2, 38.4 – 44.0 psi)?
Go to Step 2.Go to Step 5.
2Is 200 kPa (2.0 kg / cm2, 28.4 psi) or higher fuel
pressure retained for 1 minute after fuel pump is
stopped at step 1?Go to Step 3.Go to Step 4.
31) Start engine and warm it up to normal operating
temperature.
2) Keep it running at specified idle speed.
Is fuel pressure then within 200 – 240 kPa
(2.0 – 2.4 kg / cm
2, 28.4 – 34.1 psi)?
Normal fuel pressure.Clogged vacuum
passage for fuel
pressure regulator or
faulty fuel pressure
regulator.
4Is there fuel leakage from fuel feed line hose, pipe or
their joint?Fuel leakage from
hose, pipe or joint.Go to Step 10.
5Was fuel pressure higher than spec. in step 1?Go to Step 6.Go to Step 7.
61) Disconnect fuel return hose from fuel pressure
regulator and connect new return hose to it.
2) Put the other end of new return hose into approved
gasoline container.
3) Operate fuel pump.
Is specified fuel pressure obtained then?Restricted fuel return
hose or pipe.Faulty fuel pressure
regulator.

6-1-102 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
1. Fuel delivery pipe
2. Fuel feed hose
3. Fuel return hose
Special Tool
(A) Gauge
(B) Hose
(C) 3-way joint
STEPACTIONYESON
7Was no fuel pressure applied in step 1?Go to Step 8.Go to Step 9.
8With fuel pump operated and fuel return hose blocked
by pinching it, is fuel pressure applied?Faulty fuel pressure
regulator.Shortage of fuel or fuel
pump or its circuit
malfunction.
91) Operate fuel pump.
2) With fuel return hose blocked by pinching it, check
fuel pressure.
Is it 450 kPa (4.5 kg / cm
2, 63.9 psi) or more?
Faulty fuel pressure
regulator.Clogged fuel filter,
restricted fuel feed
hose or pipe, Faulty
fuel pump or fuel
leakage from hose
connection in fuel
tank.
101) Disconnect fuel return hose from pressure
regulator and connect new return hose to it.
2) Insert the other end of new return hose into
approved gasoline container.
3) Check again if specified pressure is obtained.
While doing so, does fuel come out of return hose?Faulty fuel pressure
regulator.Fuel leakage from
injector, Fuel leakage
from between injector
and delivery pipe,
Faulty fuel pump
(faulty check valve in
fuel pump) or Fuel
leakage from fuel
pressure regulator
diaphragm.
Fig. for STEP 1

6-1-104 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Power steering
pressure
switch
Power steering
pump
Fig. 1 for Step 1 Fig. 2 for Step 2
TABLE B-5 POWER STEERING PRESSURE (PSP) SWITCH SIGNAL CIRCUIT
CHECK (If equipped)
INSPECTION
STEPACTIONYESNO
1Check PSP Switch Signal Circuit.
When using SUZUKI scan tool:
1) Connect SUZUKI scan tool to DLC with ignition switch
OFF.
2) Start engine and select “DATA LIST” mode on scan tool.
3) Check power steering pressure switch. See Fig. 1.
Engine running and steering
wheel at straight-ahead position : OFF, 10 – 14 V
Engine running and steering
wheel turned to the right or
left as far as it stops : ON, 0 – 1 V
Is it in good condition?
When not using SUZUKI scan tool:
1) Turn ignition switch ON.
2) Check for voltage at terminal C01-5 of ECM
connector connected, under above each condition.
Is each voltage as specified?Signal circuit is in
good condition.Go to Step 2.
2Check Wire Harness.
1) Turn ignition switch OFF and disconnect PSP switch
connector.
2) Check for proper connection to PSP switch.
3) If OK, then check voltage at PSP switch wire terminal
with ignition switch ON. See Fig. 2.
Is it 10 – 14V?Power steering
switch malfunction
or power steering
system
malfunction.“G/W” wire open
or shorted to
ground or poor
C01-5 connection.
If wire and
connection are
OK, substitute a
known-good ECM
and recheck.