1. ECM (PCM)
2. Ignition coil assembly
for No.1 and No.4 spark plugs
3. Ignition coil assembly
for No.2 and No.3 spark plugs4. CMP sensor
5. CKP sensor
6. MAP sensor
7. ECT sensor
8. IAT sensor9. TP sensor
10. VSS (A / T)
11. Transmission range switch (A / T)
12. High-tension cords
13. VSS (speedometer) (M / T)
14. Data link connector
6F1-2 IGNITION SYSTEM (SFI FOR G13)
GENERAL DESCRIPTION
The ignition system is an electronic (distributorless) ignition system. It consists of the parts as described below and
has an electronic ignition control system.
ECM (PCM)
It detects the engine and vehicle conditions through the signals from the sensors, determines the most suitable
ignition timing and time for electricity to flow to the primary coil and sends a signal to the ignitor (power unit) in
the ignition coil assembly.
Ignition coil assembly (including an ignitor)
The ignition coil assembly has a built-in ignitor which turns ON and OFF the current flow to the primary coil accord-
ing to the signal from ECM (PCM). When the current flow to the primary coil is turned OFF, a high voltage is in-
duced in the secondary coil.
High tension cords and spark plugs.
CMP sensor (Camshaft position sensor) and CKP sensor (Crankshaft position sensor)
Using signals from these sensors, ECM (PCM) identifies the specific cylinder whose piston is in the compression
stroke and detects the crank angle.
TP sensor, ECT sensor, MAP sensor and other sensors / switches
Refer to section 6E2 for details.
Although this ignition system does not have a distributor, it has two ignition coil assemblies (one is for No.1 and
No.4 spark plugs and the other is for No.2 and No.3 spark plugs). When an ignition signal is sent from ECM (PCM)
to the ignitor in the ignition coil assembly for No.1 and No.4 spark plugs, a high voltage is induced in the secondary
coil and that passes through the high-tension cords and causes No.1 and No.4 spark plugs to spark simultaneously.
Likewise, when an ignition signal is sent to the ignitor in the other ignition coil assembly, No.2 and No.3 spark plugs
spark simultaneously.
SYSTEM COMPONENTS
WITHOUT BATTERY VOLTAGE
WITH BATTERY VOLTAGE
1. Oiler (with transmission fluid)
2. Solenoid valve
3. 12V battery
“A”: Side hole (Should be dry)
“B”: Exhausting fluid
AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-37
“P” RANGE TEST
1) Stop vehicle on a slope, shift selector lever to P range and at the
same time apply parking brake.
2) After stopping engine, release parking brake lever gradually and
check that vehicle remains stationary.
SHIFT SOLENOID VALVE CHECK
Whenever shift solenoid valves are removed from transmission,
verify their valve function physically before they are reinstalled.
1) Apply oiler to solenoid valve and give compression by hands
and then check to be sure that transmission fluid from oiler does
not come out from side holes of solenoid valve when battery volt-
age is not conducted.
2) Holding the above condition, conduct battery voltage and then
make sure that fluid is exhausted with vigor.
NOTE:
If fluid does not come out with vigor in above step 2) inspec-
tion, do not reuse that solenoid valve.
