Ignition System Diagnostic Flow Table - Suzuki Swift User Manual

6F1-4 IGNITION SYSTEM (SFI FOR G13)

IGNITION SYSTEM DIAGNOSTIC FLOW TABLE

STEP
Was "ENGINE DIAG. FLOW TABLE" performed?
1
Ignition Spark Test
1) Check all spark plugs for condition and type
referring to "Spark Plugs" section.
2
2) If OK, perform ignition spark test, referring to
"Ignition Spark Test" section.
Is spark emitted from all spark plugs?
Diagnostic Trouble Code (DTC) Check
3 Is DTC stored in ECM (PCM)?
Electrical Connection Check
1) Check ignition coil assemblies and high-tension
4
cords for electrical connection.
Are they connected securely?
High-Tension Cords Check
1) Check high-tension cord for resistance referring
5
to "High-Tension Cords" section.
Is check result satisfactory?
Ignition Coil Assembly Power Supply and Ground
Circuit Check
6 1) Check ignition coil assembly power supply and
ground circuits for open and short.
Are circuits in good condition?
Ignition Coil Assembly Check
1) Check ignition coil for resistance referring to
7
"Ignition Coil Assembly" section.
Is check result satisfactory?
Crankshaft Position (CKP) Sensor Check
1) Check crankshaft position sensor referring to
8 Step 3 and 4 of DTC P0335 Diag. Flow Table in
section 6.
Is check result satisfactory?
Ignition Trigger Signal Circuit Check
1) Check ignition trigger signal wire for open, short
9
and poor connection.
Is circuit in good condition?
A Known-good Ignition Coil Assembly Substitution
1) Substitute a known-good ignition coil assembly
10
and then repeat Step 2.
Is check result of Step 2 satisfactory?
Ignition Timing Check
1) Check initial ignition timing and ignition timing
11 advance referring to "Ignition Timing" section.
Is check result satisfactory?
ACTION YES
Go to Step 2.
Go to Step 11.
Go to applicable DTC
Diag. Flow Table in
section 6.
Go to Step 5.
Go to Step 6.
Go to Step 7.
Go to Step 8.
Go to Step 9.
Go to Step 10.
Go to Step 11.
System is in good
condition.
NO
Go to "ENGINE DIAG.
FLOW TABLE" in
section 6.
Go to Step 3.
Go to Step 4.
Connect securely.
Replace high-tension
cord(s).
Repair or replace.
Replace ignition coil
assembly.
Tighten CKP sensor
bolt, replace CKP
sensor or crankshaft
timing belt pulley.
Repair or replace.
Substitute a known-
good ECM (PCM) and
then repeat Step 2.
Check CKP sensor,
crankshaft timing belt
pulley (signal rotor)
and input signals
related to this system.