Suzuki Liana RH413, Service Manual

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1H-4 Ignition System:
Diagnostic Information and Procedures
Ignition System Symptom Diagnosis
S3RH0A1804001
Ignition System Check
S3RH0A1804002
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) Adjust, clean or replace.
Faulty ignition coil Replace ignition coil assembly.
Faulty CKP sensor or CKP sensor plate 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 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 11. 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).
6 Ignition coil assembly power supply and ground circuit
check
1) Check ignition coil assembly power supply and ground
circuits for open and short.
Are circuits in good condition?
Go to Step 7. Repair or replace.
7 Ignition coil assembly check
1) Check ignition coil for resistance referring to “Ignition
Coil Assembly (Including Igniter) Inspection”.
Is check result satisfactory?
Go to Step 8. Replace ignition coil
assembly.