DTC 53

CIRCUIT DIAGRAM





INSPECTION USING SCAN TOOL
Spark Advance





Ignition Timing Adjustment Mode





Standard Ignition Timing





HARNESS INSPECTION PROCEDURE





























USING OSCILLOSCOPE

1. Primary signal of ignition coil
(1) Run the engine at an idle speed.





(2) Connect the probe to oscilloscope pick-up point 1 as shown in the circuit diagram, and check the primary signal of the ignition coil.





2. Control signal of ignition power transistor.
Connect the probe to oscilloscope pick-up point 2 as shown in the circuit diagram, and check the control signal of the ignition power transistor.