2000 SUZUKI SWIFT fuel

1. Ignition switch
2. Main relay
3. Ignition coil assembly
for No.1 and No.4
spark plugs
4. Ignition coil assembly
for No.2 and No.3
spark plugs5. CMP sensor
6. CKP sensor
7. No.1 spark plug
8. No.2 spark plug
9. No.3 spark plug
10. No.4 spark plug11. Sensed information

MAP sensor

ECT sensor

IAT sensor

TP sensor

VSS
Park / Neutral position signal
(A / T)

Electric load signal

Engine start signal
IGNITION SYSTEM (SFI FOR G13) 6F1-3
SYSTEM WIRING DIAGRAM
DIAGNOSIS
ConditionPossible CauseCorrection
Engine cranks, but will
not start or hard to
startNo spark

Blown fuse for ignition coil

Loose connection or disconnection of lead
wire or high-tension cord(s)

Faulty high-tension cord(s)

Faulty spark plug(s)

Faulty ignition coil

Faulty CKP sensor or crankshaft timing belt
pulley

Faulty ECM (PCM)
Replace.
Connect securely.
Replace.
Adjust, clean or replace.
Replace ignition coil assembly.
Clean, tighten or replace.
Replace.
Poor fuel economy or
engine performance
Incorrect ignition timing

Faulty spark plug(s) or high-tension cord(s)

Faulty ignition coil assembly

Faulty CKP sensor or crankshaft timing belt
pulley

Faulty ECM (PCM)Check related sensors and
crankshaft timing belt pulley.
Adjust, clean or replace.
Replace.
Clean, tighten or replace.
Replace.

7B-12 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
PRECAUTION IN DIAGNOSING TROUBLE

Don’t disconnect couplers from PCM, battery cable from battery, PMC ground wire harness from engine or main
fuse before checking the diagnosis information (DTC, freeze frame data, etc.) stored in PCM memory.
Such disconnection will clear memorized information in PCM.

Using SUZUKI scan tool (Tech-1) the diagnostic information stored in PCM memory can be checked and cleared
as well. Before its use, be sure to read Operator’s (instruction) Manual supplied with it carefully to have good
understanding of its functions and usage.

Priorities for diagnosing troubles
If two or more diagnostic trouble codes (DTCs) are stored, proceed to flow table (chart) of DTC which was de-
tected earliest in order and follow instruction in that table (chart).
If no instructions are given, troubleshoot diagnostic trouble codes according to the following priorities.
1. Diagnostic trouble codes (DTCs) other than DTC P0171 / P0172 (Fuel system too lean / too rich), DTC
P0300 / P0301 / P0302 / P0303 / P0304 (Misfire detected) and DTC P0400 (EGR flow malfunction)
2. DTC P0171 / P0172 (Fuel system too lean / too rich) and DTC P0400 (EGR flow malfunction)
3. DTC P0300 / P0301 / P0302 / P0303 / P0304 (Misfire detected)

Be sure to read “PRECAUTION FOR ELECTRICAL CIRCUIT SERVICE” in Section 0A before inspection and
observe what is written there.

PCM replacement
When substituting a known-good PCM, check for following conditions.
Neglecting this check may result in damage to good PCM.
–All relays and actuators have resistance of specified value.
–MAF sensor, TP sensor and fuel tank pressure sensor (if equipped) are in good condition. Also, the power cir-
cuit of these sensors is not shorted to the ground.

NOTE:
Terminal arrangement of coupler viewed from harness side.
Coupler A
1. To generator W / R
2. To ignition switch B / W
3. To ECM V / G
4. To ECM V
5. Blank –
6. To ECT sensor Y / W
7. Blank —
8. To engine oil pressure switch Y / B
9. To ECM Br
10. Blank —
11. To SDM (if equipped) Bl
12. Blank —
13. Blank —
14. Blank —
15. To ground R
16. To combination switch R / Y
Coupler B
1. To combination switch G / R
2. Blank —
3. Blank —
4. To ECM Y / G
5. To brake fluid level switch and R / B
parking brake switch
6. Blank —
7. To ABS control module R / Bl
(if equipped)
8. Blank —
9. To fuel level gauge Y / R
10. To ground B / Bl
11. To ignition switch B / W
12. Blank —
13. Blank —
Coupler C
1. Blank —
2. Blank —
3. Blank —
4. Blank —
5. Blank —
6. Blank —
7. To main fuse R
8. To combination switch W / Bl
9. To ground B
10. To combination switch G / Y
Coupler A Coupler B Coupler C
8-2 BODY ELECTRICAL SYSTEM
GENERAL DESCRIPTION
COMBINATION METER

IMMOBILIZER CONTROL SYSTEM 8G-11
EXAMPLE: When serial data link wire is defective (Code No.83)
ON
OFFMalfunction
indicator lamp
Code No.83 Code No.83 Code No.83
Time (sec.)
1. Data link connector (DLC)
3) After completing the check, turn ignition switch OFF and discon-
nect service wire from monitor coupler.
[Using SUZUKI scan tool] (Vehicle not equipped with
monitor coupler)
1) Turn ignition switch OFF.
2) After setting cartridge to Suzuki scan tool, connect it to data link
connector (DLC) located on underside of instrument panel at
driver’s seat side.
Special Tool
(A): 09931-76011 (Suzuki scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16 / 14 pin DLC adapter)
3) Turn ignition switch ON.
4) Read DTC stored in ECM according to instructions displayed on
Suzuki scan tool and print it or write it down. Refer to Suzuki scan
tool operator’s manual for further details.
NOTE:

When reading DTC stored in ECM using Suzuki scan tool,
select “ECM” from the applications menu and “SUZUKI
mode” from the communication mode menu displayed on
Suzuki scan tool.

If ECM detects a trouble in both electric fuel injection sys-
tem and immobilizer control system, Suzuki scan tool in-
dicates trouble codes of both systems using Suzuki mode
of ECM application.
If communication between Suzuki scan tool and ECM is not pos-
sible, check if Suzuki scan tool is communicable by connecting
it to ECM in another vehicle. If communication is possible in this
case, Suzuki scan tool is in good condition. Then check data link
connector and serial data line (circuit) in the vehicle with which
communication was not possible.
5) After completing the check, turn ignition switch OFF and discon-
nect Suzuki scan tool from data link connector (DLC).