Diagnostic Flow Table - Suzuki 2000 Grand Vitara SQ625 Service Manual

6F1-4 IGNITION SYSTEM (FOR G16 ENGINE)

DIAGNOSTIC FLOW TABLE

STEP
1 Was "Engine Diagnostic Flow Table" in SECTION
6 performed ?
2 Ignition Spark Test
1) Check all spark plug for condition and type,
referring to "Spark Plug" in this section.
2) If OK, perform ignition spark test, referring to
"Ignition Spark Check" in this section.
Is spark emitted from all spark plugs?
3 Diagnostic Trouble Code (DTC) Check
1) Check DTC stored in ECM (or PCM), referring
to "Diagnostic Trouble Code (DTC) Check" in
SECTION 6.
Is DTC stored?
4 Electrical Connection Check
1) Check ignition coil assemblies for electrical con-
nection.
Are they connected securely?
5 High-tension Cord Check
1) Check high-tension cord for resistance, refer-
ring to "High-tension Cord" in this section.
Is check result satisfactory?
6 Ignition Coil Assembly Power Supply, Ground and
Trigger Signal Circuits Check
1) Check these circuits for open and short.
Are circuits in good condition?
7 Ignition Coil Assembly Check
1) Check ignition coil assembly for damage,
deterioration and terminal corrosion, referring to
"Ignition Coil Assembly" in this section.
Is check result satisfactory?
8 Ignition Coil Assembly Check
1) Substitute a known-good ignition coil assembly
and then repeat Step 2.
Is check result of Step 2 satisfactory?
9 CMP Sensor Check
1) Check CMP sensor and signal rotor, referring to
Steps 6 and 7 of DTC P0340 (No.42) Diag.
Flow table in SECTION 6.
Is check result satisfactory?
ACTION YES
Go to Step 2.
Go to Step 10 on the
next page.
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.
Malfunction of igni-
tion coil assembly.
Substitute a known-
good ECM (or PCM)
and then repeat
Step 2.
NO
Go to "Engine Diag-
nostic 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.
Go to Step 9.
Tighten CMP sensor
bolt, replace CMP
sensor or camshaft.