Ignition System: 1H-2
Ignition Control Description
Z9J0111801002
Sensors at specific points on the engine monitor current engine conditions and send signals to the ECM.
Based on these signals, the ECM determines the optimum ignition timing and releases voltage to the ignition coils.
Ignition specification
MAP sensor:
Informs ECM of intake manifold pressure.
CKP sensor:
Informs ECM of engine speed and crankshaft angle.
Basic sensors
Ignition switch:
Informs ECM of “START” signal.
Cylinder temperature sensor:
Informs ECM of cylinder temperature.
Throttle position sensor:
Informs ECM of throttle opening angle.
Shift position sensor:
Informs ECM of shift position and change.
IAT sensor:
Informs ECM of intake air temperature.
Compensating sensors
ECM
Ignition timing is determined by a
digital map designed in relation to
intake manifold pressure and
engine speed.
Ignition timing compensation
Signal
Spark plug
Ign.coil
Switch
I9J011180002-01
Ignition system Full-transistorized ignition
Advance Electronic microcomputer control
Ignition timing
BTDC 0° ± 5° – BTDC 26° ± 5° (DF70 / 80)
BTDC 0° ± 5° – BTDC 27° ± 5° (DF90)
Firing order 1 — 3 — 4 — 2
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