1H-5 Ignition System:
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 M16 engine) for electrical connection.
Are they connected securely?
Go to Step 5 for M16
engine or go to Step 6
for J20 engine.
Connect securely.
5
High-tension cords check (for M16 engine)
1) Check high-tension cord for resistance referring to
“High-Tension Cord Inspection (For M16 Engine): ”.
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 ignitor) Inspection: ”.
Is check result satisfactory?
Go to Step 8.
Replace ignition coil
assembly.
8
CKP sensor check
1) Check CKP sensor referring to “Crankshaft Position
(CKP) Sensor Inspection: in Section 1C”.
Is check result satisfactory?
Go to Step 9.
Tighten CKP sensor
bolt, replace CKP
sensor or CKP sensor
plate.
9
CMP sensor check
1) Check CMP sensor referring to “Camshaft Position
(CMP) Sensor Inspection: in Section 1C”.
Is check result satisfactory?
Go to Step 10.
Tighten CMP sensor
bolt, replace CMP
sensor or intake
camshaft.
10
Ignition trigger signal circuit check
1) Check ignition trigger signal wire for open, short and
poor connection.
Is circuit in good condition?
Go to Step 11.
Repair or replace.
11
A known-good ignition coil assembly substitution
1) Substitute a known-good ignition coil assembly and then
repeat Step 2.
Is check result of Step 2 satisfactory?
Go to Step 12.
Substitute a known-
good ECM and then
repeat Step 2.
12
Ignition timing check
1) Check initial ignition timing and ignition timing advance
referring to “Ignition Timing Inspection: ”.
Is check result satisfactory?
System is in good
condition.
Go to Step 13.
Step
Action
Yes
No
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