124
SYSTEM ANALYSIS
FUEL DELIVERY TESTS
Results:
No light activation on any injector wires (outboard
cranks and starter turns flywheel):
• Check stator input to EMM, CPS operation, and
all grounds and wiring connections.
• Eliminate all other possibilities to isolate a faulty
EMM.
Irregular or no light activation on some injector
wires:
• Test the resistance of individual injector circuits
between the injector connector and injector con-
trol wire at the EMM.
• Check battery cable connections.
• Make sure all grounds are clean and tight.
• See Fuel Injector Resistance Test on p. 180.
Steady light activation on all injector wires and
consistent voltage readings, EMM injector control
function is good:
• Use the diagnostics software Dynamic Fuel Test
to isolate a faulty cylinder. See DYNAMIC
TESTS on p. 114.
Dynamic Tests Screen 006814
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