IGT1, IGT2, IGT3, IGT4 control

Fig 1: Igt1, Igt2, Igt3, Igt4 Control Oscilloscope Graph

G10951976

Courtesy of MAZDA MOTORS CORP.

PCM terminals

IGT1 (ignition coil No. 1): 1AY(+)-body ground(-)
IGT2 (ignition coil No. 2): 1AT(+)-body ground(-)
IGT3 (ignition coil No. 3): 1AO(+)-body ground(-)
IGT4 (ignition coil No. 4): 1AJ(+)-body ground(-)

Oscilloscope setting

2 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition

Idle (after warm up and no load)