Suzuki Wagon R RB310 Supplementary Service Manual page 67

6F1-4 IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM)
IGNITION SYSTEM DIAGNOSTIC FLOW TABLE
Step
Was "ENGINE DIAG. FLOW TABLE" per-
1 formed?
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?
Electrical Connection Check
1) Check ignition coil assemblies and high-ten-
4
sion cords for electrical connection.
Are they connected securely?
High-Tension Cords Check
1) Check high-tension cord for resistance
5
referring 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
8 to 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,
9
short and poor connection.
Is circuit in good condition?
A Known-good Ignition Coil Assembly Substitu-
tion
10 1) Substitute a known-good ignition coil
assembly and then repeat Step 2.
Is check result of Step 2 satisfactory?
Ignition Timing Check
1) Check initial ignition timing and ignition tim-
11 ing 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 sec-
tion 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 condi-
tion.
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 pul-
ley.
Repair or replace.
Substitute a known-good
ECM and then repeat
Step 2.
Check CKP sensor,
crankshaft timing belt pul-
ley (signal rotor) and input
signals related to this sys-
tem.