Suzuki Swift Sport 2004 User Manual

1H-4 Ignition System:
Diagnostic Information and Procedures
Ignition System Symptom Diagnosis
S7RS0B1804001
Reference Waveform of Ignition System
S7RS0B1804002
Refer to “Reference waveform No.5”, “Reference waveform No.6” and “Reference waveform No.7” under “Inspection
of ECM and Its Circuits in Section 1A” for waveform of Ignition trigger signal.
Ignition System Check
S7RS0B1804003
Condition Possible cause Correction / Reference Item
Engine cranks, but will
not start or hard to start
(No spark)
Blown fuse for ignition coil Replace.
Loose connection or disconnection of
lead wire or high-tension cord(s)
Connect securely.
Faulty high-tension cord(s) Replace.
Faulty spark plug(s) Replace.
Faulty ignition coil Replace ignition coil assembly.
Faulty CKP sensor or CKP sensor plate Clean, tighten or replace.
Faulty CMP sensor or sensor rotor tooth
of camshaft
Clean, tighten or replace.
Faulty ECM Replace.
Poor fuel economy or
engine performance
Incorrect ignition timing Check related sensors and CKP sensor plate.
Faulty spark plug(s) or high-tension
cord(s)
Adjust, clean or replace.
Faulty ignition coil assembly Replace.
Faulty CKP sensor or CKP sensor plate Clean, tighten or replace.
Faulty CMP sensor or sensor rotor tooth
of camshaft
Clean, tighten or replace.
Faulty knock sensor Replace.
Faulty ECM Replace.
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed?
Go to Step 2. Go to “Engine and
Emission Control
System Check in
Section 1A”.
2 Ignition spark test
1) Check all spark plugs for condition and type referring to
“Spark Plug Inspection”.
2) If OK, perform ignition spark test referring to “Ignition
Spark Test”.
Is spark emitted from all spark plugs?
Go to Step 13. Go to Step 3.
3 DTC check
1) Perform DTC check referring to “DTC Check in Section
1A”.
Is DTC stored in ECM?
Go to applicable DTC
diag. flow.
Go to Step 4.
4 Electrical connection check
1) Check ignition coil assemblies and high-tension cords
for electrical connection.
Are they connected securely?
Go to Step 5. Connect securely.
5 High-tension cords check
1) Check high-tension cord for resistance referring to
“High-Tension Cord Inspection”.
Is check result satisfactory?
Go to Step 6. Replace high-tension
cord(s).

Suzuki Swift Sport 2004 Specifications

General

Brand	Suzuki
Model	Swift Sport 2004
Category	Automobile
Language	English