Ecm SUZUKI SWIFT 2000 1.G RG413 Service Workshop Manual

6E1-6 ENGINE AND EMISSION CONTROL SYSTEM
FUEL DELIVERY SYSTEM
The fuel system consists of fuel tank (1), fuel pump (2) (with built-in fuel filter (3) and fuel pressure regulator (4)),
delivery pipe (5), injectors (6) and fuel feed line (7).
The fuel (8) in the fuel tank (1) is pumped up by the fuel pump (2), sent into delivery pipe (5) and injected by the
injectors (6).
As the fuel pump assembly is equipped with built-in fuel filter (3) and fuel pressure regulator (4), the fuel (8) is fil-
tered and its pressure is regulated before being sent to the delivery pipe (5).
The excess fuel from fuel pressure regulation process is returned back (9) into the fuel tank.
Also, fuel vapor generated in fuel tank is led through the fuel vapor line (10) into the EVAP canister (12).
FUEL PUMP
An in-tank type electric pump has been adopted for the fuel pump
(1). Incorporated in the pump assembly are;
Tank pressure control valve (2) which keeps the pressure in
the fuel tank constant, and prevents the fuel from spouting
and tank itself from being deformed.
Relief valve (3) which prevents the pressure in tank from ris-
ing excessively.
Fuel cut valve (4) which closes as the float rises so that the
fuel will not enter the canister when the fuel level in the tank
rises high depending on the fuel level in the tank and the
vehicle tilt angle.
Also, a fuel filter (5) and a fuel pressure regulator (6) are included
and a fuel level gauge (7) is attached.
Addition of the fuel pressure regulator (6) to the fuel pump makes
it possible to maintain the fuel pressure at constant level and
ECM controls compensation for variation in the intake manifold
pressure.
11. Intake manifold

ENGINE AND EMISSION CONTROL SYSTEM 6E1-7
ELECTRONIC CONTROL SYSTEM
The electronic control system consists of 1) various sensors which detect the state of engine and driving condi-
tions, 2) ECM which controls various devices according to the signals from the sensors and 3) various controlled
devices.
Functionally, it is divided into nine sub systems :
Fuel injection control system
Idle speed control system
Fuel pump control system
A/C control system (if equipped)
Radiator fan control system
EGR system (if equipped)
Evaporative emission control system
Oxygen sensor heater control system (if equipped)
Ignition control system
Also, with A/T model, ECM sends throttle valve opening signal and coolant temp. signal to transmission control
module to control A/T.
INFORMATION SENSORS CONTROL DEVICES OTHERS
1. MAP sensor a : Fuel injector A : ECM
2. TP sensor b : EVAP canister purge valve B : Main relay
3. IAT sensor c : Fuel pump relay C : EVAP canister
4. ECT sensor d : EGR valve (step motor) (if equipped) D : Monitor connector
5. Heated oxygen sensor-1 (if equipped) e : Malfunction indicator lamp E : Data link connector
5-1. Heated oxygen sensor-2 (if equipped) f : Ignition coil assembly F : A/C EVAP thermistor (if equipped)
6. VSS g : Radiator fan control relay G : TCM (A/T)
7. Transmission range switch (A/T) h : IAC valve
8. Battery i : Immobilizer indicator lamp
9. CMP sensor
10. CKP sensor
11. Fuel level sensor (gauge) (in fuel tank)
12. Stop lamp switch
13. Knock sensor (if equipped)

ENGINE AND EMISSION CONTROL SYSTEM 6E1-9
ECM INPUT/OUTPUT CIRCUIT DIAGRAM
For TYPE A (See NOTE)
37
C41-23
G02-12 IG1PNK 5554
BLK
C41-2
C41-9
C41-8
C41-17C42-13
17
2+B
1
6
8
5
IG1
IG1
14C42-9
C42-11
C42-23
C42-22
C41-3
C42-26
C42-14
C42-15
C42-10
C42-12
C42-13
C42-7
C42-30
C42-29
G02-14
G02-10
G02-16
C41-14
C41-21
C42-5
C41-15
G02-9
C42-17
G02-1
C42-28
C42-27 C42-16
G02-5C42-21
C42-31
C42-8
C42-6
C42-4
C41-19
C41-18
G02-3
G02-2
G02-13
C41-16
C42-18
C41-1
C41-10
C41-6
C41-5
C41-7
C42-1 C42-2
C42-3
C42-25G02-6
G02-173E01
E01 C42-20
C42-19L+
L–
H–H+ 25
26
27
28
29
30
35
31
No.1
No.2
No.3 32
33
33
33 34
IG2
IG2
+B
+B
IG1
+BB
IG11
IG2 IG1
21
47
49
IG
METERIG1
ST
15IG2
48
53
E11+
– 2218
PRND2L
IG11
IG11
+BB
IG145 41
ABS
TCM
SDM
24IG1
+BB50
16
E11
E1194
7
12
+BB
GND
: 56 : 57
IG1
E11 10
11
+B RED/YELBLU/YEL
BLU/WHT
BLU/RED
BLU/ORN
GRN/RED
BLU/BLK
PNK
BLU
GRN/RED
GRN/YEL39
40 GRN/WHT
PPL
YEL/GRN PNK/BLU
PNK/GRN
PNK/BLK
BLK/WHT
WHT/RED
BRN/WHT
BLK/RED
BLK/RED
BLK/YEL
BLK/ORNBLK
BLK/ORN YEL/BLK
GRY/RED
GRY/BLU
RED/WHT
GRY/WHT
LT GRN
LT GRN/BLK
ORN
RED
WHT
RED/BLU
BRN
GRN/BLK
WHT/BLK
ORN
BRN
EPS, AT, ETC
LT BLU
PPL
WHT/BLK
GRN/WHT
RED/BLK
PPL/YEL
PNK/BLU
WHT/GRN
BLU
B/W
B/W
BLK/WHT
RED
42
46 43
44 36
DN
TSGND MONPPL/WHT 38
G02-7
YEL
BLK/RED
GRN
GRN/ORN

BRN/YEL
51
2352
C41-22YEL/RED 13WHT
19
ORN
: 5V
: 12V
BLU/WHT
BLK/WHT
BLU/WHT
BLK/YEL
BLK/RED
BLK/ORN
WHT/RED
RED/YEL
NOTE:
Type A is other than follows.
Type B is right hand steering vehicle equipped with fasten seat belt light and immobilizer control sys-
tem.

ENGINE AND EMISSION CONTROL SYSTEM 6E1-11
For TYPE B (Refer to NOTE in “ECM INPUT/OUTPUT CIRCUIT DIAGRAM” for applicable model.)
37
54
BLK
C42-18
C42-29
C42-17
C42-28
C42-13
17
2+B
1
6
8
5
IG1
IG1
14C42-9
C42-11
C42-23
C42-22
C42-16

C42-26
C42-14
C42-15
C42-10
C42-25
C42-13
C42-7
G02-1
G02-14
G02-16
G02-6
G02-15
G02-5
G02-2
C41-21
C41-17
G02-9
C41-8
C41-14 C41-15
G02-11C42-21
C42-31
C42-8
C42-6
C42-4
C41-19
C41-18
C41-9
C41-22
G02-13
C41-16
C42-30
C41-1
C41-10
C41-6
C41-5
C41-20
C42-1 C42-2
C42-3
C42-12 C41-11
C41-73E01
E01 C42-20
C42-19L+
L–
H–H+ 25
26
27
28
29
30
35
31
No.1
No.2
No.3 32
33
33
33 34
IG2
IG2
+B
+B
IG1
+BB
IG11
IG2 IG1
21
47
49
IG
METERIG1
ST
15IG2
48
53
E11+
– 2218
PRND2L
IG11
IG11
+BB
IG145 41
ABS
TCM
SDM
24IG1
+BB50
16
E11
E1194
7
12
52
+BB
GND
: 56 : 57
11
+B RED/YELBLU/YEL
BLU/WHT
BLU/RED
BLU/ORN
GRN/RED
BLU/BLK
PNK
BLU
GRN/RED
GRN/YEL39
40 GRN/WHT
PPL
YEL/GRN PNK/BLU
PNK/GRN
PNK/BLK
BLK/WHT
WHT/RED
BRN/WHT
BLK/RED
BLK/RED
BLK/YEL
BLK/ORNBLK
BLK/ORN YEL/BLK
GRY/RED
GRY/BLU
RED/WHT
GRY/WHT
LT GRN
LT GRN/BLK
ORN
RED
WHT
RED/BLU
WHT/BLK
ORN
BRN
EPS, AT, ETC
GRN/RED
PPL
WHT/BLK
GRN/WHT
RED/YEL
PPL/WHT
PNK/BLU
WHT/GRN
BLU
B/W
RED
42
46 43
44 36
DN
TS
GND MON
PPL/WHT 38
G02-7
YEL
BLK/RED
GRY
GRN/ORN

BRN/YEL
51
23
13WHT
19
ORN
: 5V
: 12V
BLU/WHT
BLK/WHT
BLU/WHT
BLK/YEL
BLK/RED
BLK/ORN
WHT/RED

ENGINE AND EMISSION CONTROL SYSTEM 6E1-13
ECM TERMINAL ARRANGEMENT TABLE
For TYPE A (Refer to NOTE in page “ECM INPUT/OUTPUT CIRCUIT DIAGRAM” for applicable model.)
CONNEC-
TORTERMINAL WIRE COLOR CIRCUITCONNEC-
TORTERMINAL WIRE COLOR CIRCUIT
C421 BLK/ORN Ground for ECM
C4112––
2 BLK Ground for drive circuit 13–Heated oxygen sensor-2
3 BLK/ORN Ground for drive circuit 14 LT BLU“D”, “2”, “L”-range ID-UP signal
4 BLU/BLK Canister purge valve 15 RED“R”-range signal
5 WHT/BLK Coolant temp. signal output 16 YEL/GRN A/C SW signal
6 GRN/RED IAC valve 17 BRN/YEL EGR valve (stepper motor coil 4)
7 RED/BLU Heater of HO2S-1 18 BLU Radiator fan relay 1
8 BLU/ORN No.4 fuel injector 19 PNK Fuel pump relay
9 BLU/YEL No.1 fuel injector 20––
10 ORN Ground for sensor circuit 21 PPL Throttle opening signal output for A/T
11 RED/YEL CMP sensor 22 YEL/RED Fuel level gauge
12 RED Knock sensor (if equipped) 23 BLK/WHT TCM serial data line
13 WHTHeated oxygen sensor-1
(if equipped)
24––
CO adjusting resistor
(if equipped)
14 LT GRN Coolant temp. sensor
15 LT GRN/BLK Intake air temp. sensor
G021 PPL/WHT Malfunction indicator lamp
16 WHT/GRN Test switch terminal (if equipped) 2 PPL Vehicle speed sensor
17 RED/BLK Electric load (+) 3 PPL/YEL Radiator fan relay 2
18 PNK/GRN A/C switch 4––
19 GRN/WHTIG coil assembly for No.2 and 3 spark
plugs5 BLU Data link connector
20 GRN/YELIG coil assembly for No.1 and 4 spark
plugs6 BLK/WHT Ignition switch signal
21 BLU/WHT No.2 fuel injector 7 YEL Data link connector
22 GRY/RED Power supply for sensor 8––
23 YEL/BLK CKP sensor (+) 9 GRN/WHTStop lamp switch (Brake pedal
switch)
24––10 ORN GND for sensor
25–Ground for sensor shield wire 11––
26 RED/WHT MAP sensor 12 PNKImmobilizer indicator lamp
(if equipped)
27 PPL/WHTDiagnosis switch terminal
(if equipped)13 PNK/BLU Electrical load (-)
28 PNK/BLU Duty output terminal (if equipped) 14 WHT/BLK A/C evaporator temp. sensor
29 BRN Heater of HO2S-2 15––
30 GRN/BLK Heated oxygen sensor-2 16 BRN Tachometer signal
31 BLU/RED No.3 fuel injector 17 WHT/RED Backup power source
C411 PNK/BLK A/C compressor clutch
2 GRN EGR valve (stepper motor coil 1)
3 GRY/BLU Throttle position (TP) sensor
4–Heater of HO2S-2
5 BLK/RED Power source
6 BLK/RED Power source
7 BLK/YEL Engine start signal
8 WHT/RED EGR valve (stepper motor coil 3)
9 GRN/ORN EGR valve (stepper motor coil 2)
10 BRN/WHT Ground for main relay
11––
C42 (31P) C41 (24P) G02 (17P)1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 28 27 29 30 315 6
1 2 3 4 5 6 7
11 12
9 10 11 13 12 14 15 16
16 171 2
7 8
13 14 3 4
9 10
15 17 188
19 20 21 22 23 24
NOTE:
For abbreviation of wire color, refer to Section 0A.

6E1-14 ENGINE AND EMISSION CONTROL SYSTEM
For TYPE B (Refer to NOTE in page “ECM INPUT/OUTPUT CIRCUIT DIAGRAM” for applicable model.)
CONNEC-
TORTERMINAL WIRE COLOR CIRCUITCONNEC-
TORTERMINAL WIRE COLOR CIRCUIT
C421 BLK/ORN Ground for ECM
C4112––
2 BLK Ground for drive circuit 13––
3 BLK/ORN Ground for drive circuit 14 PPL/WHT Diagnosis switch terminal
4 BLU/BLK Canister purge valve 15 WHT/GRN Test switch terminal
5––16 YEL/GRN A/C SW signal
6 GRN/RED IAC valve 17 RED/YEL
Electric load (+)
7 RED/BLU Heater of HO2S-1 18 BLU Radiator fan relay 1
8 BLU/ORN No.4 fuel injector 19 PNK Fuel pump relay
9 BLU/YEL No.1 fuel injector 20 BLK/YEL
Cranking signal
10 ORN Ground for sensor circuit 21 GRN/WHTStop lamp switch (Brake pedal
switch)
11 RED/YEL CMP sensor 22 PPL Vehicle speed sensor
12 Or Grand for shield wire 23––
13 WHTHeated oxygen sensor-1
(if equipped)
24––
CO adjusting resistor
(if equipped)
14 LT GRN Coolant temp. sensor
15 LT GRN/BLK Intake air temp. sensor
G021 WHT/BLK A/C evaporator temp. sensor
16 GRY/BLU Throttle position (TP) sensor 2 RED“R” range signal
17 WHT/RED EGR valve (stepper motor coil 3) 3––
18 GRY EGR valve (stepper motor coil 1) 4––
19 GRN/WHTIG coil assembly for No.2 and 3 spark
plugs5 WHT/BLK Engine coolant temp. signals output
20 GRN/YELIG coil assembly for No.1 and 4 spark
plugs6 GRN/RED“D”, “2”, “L” range ID-UP signal
21 BLU/WHT No.2 fuel injector 7 YEL Data link connector
22 GRY/RED Power supply for sensor 8––
23 YEL/BLK CKP sensor (+) 9 PPL/WHT Malfunction indicator lamp
24––10––
25 RED Knock sensor (if equipped) 11 BLU
Data link connector
26 RED/WHT MAP sensor 12––
27––13 PNK/BLU Electrical load (-)
28 BRN/YEL EGR valve (stepper motor coil 4) 14 ORN Ground for sensor
29 GRN/ORNEGR valve (stepper motor coil 2)
15 PPL
Throttle opening signal output for
A/T
30 PNK/GRN A/C switch 16 BRN Tachometer signal
31 BLU/RED No.3 fuel injector 17––
C411 PNK/BLK A/C compressor clutch
2––
3––
4––
5 BLK/RED Power source for drive circuit
6 BLK/RED Power source for main circuit
7 WHT/RED Power source for memory circuit
8 PNK/BLU Duty signal output terminal
9 GRN/RED Radiator fan drive relay No.2
10 BRN/WHT Ground for main relay
11 BLK/WHT
Ignition switch signal
C42 (31P) C41 (24P) G02 (17P)1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 28 27 29 30 315 6
1 2 3 4 5 6 7
11 12
9 10 11 13 12 14 15 16
16 171 2
7 8
13 14 3 4
9 10
15 17 188
19 20 21 22 23 24
NOTE:
For abbreviation of wire color, refer to Section 0A.

ENGINE AND EMISSION CONTROL SYSTEM 6E1-25
4) Install suitable vinyl tube onto injector nozzle to prevent fuel
from splashing out when injecting.
5) Put graduated cylinder under injector as shown.
6) Operate fuel pump and apply fuel pressure to injector as fol-
lows:
7) When using SUZUKI scan tool :
a) Connect SUZUKI scan tool to DLC with ignition switch OFF.
b) Turn ignition switch ON, clear DTC and select “MISC TEST”
mode on SUZUKI scan tool.
c) Turn fuel pump ON by using SUZUKI scan tool.
(A) : 09931-76011 (SUZUKI scan tool)
(B) : Mass storage cartridge
(C) : 09931-76030 (16/14 pin DLC cable)
8) Without using SUZUKI scan tool :
a) Remove fuel pump relay from connector.
b) Connect two terminals of relay connector using service wire
(1) as shown in figure.
c) Turn ignition switch ON.
9) Apply battery voltage (3) to injector (2) for 15 seconds and
measure injected fuel volume with graduated cylinder.
Test each injector two or three times.
If not within specification, replace injector.
Injected fuel volume
: 43 – 47 cc/15 sec. (1.45/1.51 – 1.58/ 1.65 US/Imp. oz/15
sec.)
10) Check fuel leakage from injector nozzle. Do not operate
injector for this check (but fuel pump should be at work).
If fuel leaks (1) more than following specifications, replace.
Fuel leakage (1)
: Less than 1 drop/min. CAUTION:
Check to make sure that connection is made between
correct terminals. Wrong connection can cause damage
to ECM, wire harness, etc.
4. Keep as far apart as possible
[A] : When using SUZUKI scan tool
[B] : When not using SUZUKI scan tool
(C)
(A)
(B)
1 [A]
[B]

ENGINE AND EMISSION CONTROL SYSTEM 6E1-27
ELECTRONIC CONTROL SYSTEM
ENGINE CONTROL MODULE (ECM)
REMOVAL
1) Disconnect battery negative cable at battery.
2) Disable air bag system, referring to “Disabling The Air Bag
System” in Section 10B if equipped.
3) Disconnect ECM (1) and TCM (2) (if equipped) connectors.
4) Remove bolt and nuts, remove ECM and TCM (if equipped).
INSTALLATION
Reverse removal procedure noting the following:
Connect connectors to ECM and TCM (if equipped) securely.
MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP
SENSOR)
INSPECTION
Check MAP sensor referring to “MAP Sensor Individual Check” in
DTC P0105 (No.11) Flow Table. If malfunction is found, replace.CAUTION:
As ECM consists of precision parts, be careful not to
expose it to excessive shock.
2
1

6E1-36 ENGINE AND EMISSION CONTROL SYSTEM
OUTPUT SIGNALS OF THROTTLE VALVE OPENING
AND ENGINE COOLANT TEMP. (VEHICLE WITH A/T
ONLY)
THROTTLE VALVE OPENING SIGNAL INSPECTION
Check throttle valve opening (throttle position) signal referring to
step 1 of DTC P1700 (No.32 or 33) Flow Table in Section 7B. If
check result is not satisfactory, check each wire harness, circuit
connections and TP sensor.
ENGINE COOLANT TEMP. SIGNAL INSPECTION
Check engine coolant temp. signal referring to step 1 of DTC
P1705 (NO.51) Flow Table in Section 7B.
If check result is not satisfactory, check each wire harness, circuit
connection and ECT sensor.
EMISSION CONTROL SYSTEM
EGR SYSTEM
SYSTEM INSPECTION (USING SUZUKI SCAN TOOL)
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
2) Turn ignition switch ON and then select “DATA LIST” mode
on scan tool.
3) Make sure that vehicle condition is as following.
Vehicle speed = 0 km/h (0 KPH)
Engine speed ≤ 3000 rpm
4) Clear DTC by using “CLEAR INFO” mode.
5) With engine idling (without depressing accelerator pedal),
open EGR valve by using “STEP EGR” mode in “MISC
TEST” menu. In this state, according as EGR valve opening
increases engine idle speed drops. If not, possible cause is
clogged EGR gas passage, stuck or faulty EGR valve, poor
performance of ECT sensor or TP sensor or DTC and/or
pending DTC is (are) stored in ECM memory.
REMOVAL
1) Disconnect negative cable at battery.
2) Remove air intake pipe.
3) Remove EGR pipe.
4) Disconnect EGR valve connector.
5) Remove EGR valve and gasket from intake manifold.
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full Open)

6E1-38 ENGINE AND EMISSION CONTROL SYSTEM
3) Connect purge hose to EVAP canister and warm up engine
to normal operating temperature.
4) Disconnect purge hose from EVAP canister.
5) Also check that vacuum is felt when engine is running at idle
speed.
If check result is not satisfactory, check vacuum passage,
hoses, EVAP canister purge valve, wire harness and ECM.
VACUUM PASSAGE INSPECTION
Start engine and run it at idle speed. Disconnect vacuum hose (1)
from EVAP canister purge valve (2). With finger placed against
hose disconnected, check that vacuum is applied.
If it is not applied, clean vacuum passage by blowing compressed
air.
VACUUM HOSE INSPECTION
Check hoses for connection, leakage, clog and deterioration.
Replace as necessary.
EVAP CANISTER PURGE VALVE INSPECTION
Check EVAP canister purge valve referring to step 1 of DTC
P0443 Flow Table.
If found malfunction, replace.NOTE:
The EVAP canister purge system does not perform purg-
ing (vacuum is not detected at the purge hose) unless the
engine is sufficiently warmed up and the heated oxygen
sensor is activated fully. Also, when the purge hose is
disconnected in Step 4), the air is drawn into the purge
line. As a result, ECM detects a change in the purge gas
concentration and sometimes stops purging but this
indicates nothing abnormal.