Signal from module? Yes

Block ground?

Plug cap wires 10K ohms per foot

Cap and rotor

GM secondary 5 to 7K ohms

Primary winding less than 1 ohm

Pick up coil GM 500 1500 ohms white and green leads

No module signal, check your grounds

Pressure Pump? Regulator is this excessive presure?

TBI low pressure 9-13, pump max 18-20

TBI high pressure 25-35 pump max 50-70

Port fuel injection 35-45 pump max 70-90

Central point 55-64 pump max 90-110

Carbs the pump should produce 1 pint in 30 seconds

Injector testing tool J-39200

NOID light,

Coil test resistance no spec, but energize it to test

Flow not more than 10 kpa deviation

Open loop (warm up) cam sense fixed timing priming pulse and go there until O2 sensor is at 600 and coolant is around 160 sensors IAT (air temp) ECT (coolant temp) TP MAP MAF CKP (rmps) not cam and it takes a guess on firing order.

Closed loop O2 take charge

Short term aka integrator

Long term aka block learn data base which is based upon rpm and load

Fuse

Relay

Signal

Power

Ground

Reference

UART on 5v 0v ground?

Class 2 on 7v 0v

Sensors DTCs? Check output w/tech 2 and your brain

O2 .45v middle .9v rich .1v lean fast wave – high and low signal?

ECT (coolant) 5v reference – variable to 2 step w/fixed resistors 5v –40C 0v hot 151C 300ish

MAP (the dark side of the moon) 0v low 10 kpa (presure) 5v high 105 kpa

TP 5v reference

MAF heated wire reference smoke and mirrors unknown voltage digital signal