3000GT SL V6-2972cc 3.0L DOHC MFI (1997)
unit to turn it on. When the engine control module turns on the transistor in the module, the ignition power transistor unit is turned off.
INSPECTION USING SCAN TOOL
(Spark Advance)
(Ignition Timing Adjustment Mode)
(Standard Ignition Timing)
Using Oscilloscope
1. Primary signal of ignition coil
a. Run the engine at an idle speed.
b. 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.
