Hyundai 20G-7, Руководство по обслуживанию

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3-4
IGNITION SYSTEM
INSPECTION OF IGNITION TIMING
1. Inspection condition
Coolant temperature : 80-90°C(At normal temperature)
Lamp, cooling fan and all accessories : OFF
Transaxle : In neutral position (Auto : N)
Parking brake : ON
2. Inspection
1) Connect the timing light.
2) After inserting the clip backward the connector, con-
nect the tachometer with the special tool (09273-24000)
CAUTION
Take care not to disconnect the connector.
L4GC300A
3) Measure RPM.
NOTE
If RPM is not normal, it is impossible to measure
the proper ignition timing, so measure it at a
normal RPM.
4) Inspect the standard ignition timing.
2.0DOHC 700 100rpm
RPM
BTDC 2° 6°
5) If ignition timing is out of the standard, inspect sensors
concerned with ignition timing.
CAUTION
Because ignition timing is fixed by set data value
in ECU, it is impossible to control on purpose.
Fist, check that sensors send output properly to
help determine ignition timing control.
NOTE
Affective ECU input to Ignition timing control
1. Coolant temperature sensor (WTS)
2.
Oxygen sensor
3. Battery voltage
4. Vehicle speed sensor
5.
Map sensor (Engine load)
6. Crankshaft position sensor
7. Throttle position sensor
8.
Intake sensor
6) Check that actual ignition timing is changed with engine
RPM increased.