DTC 21 - Ignition Signal

The ECU did not detect the ignition primary signal during starting or running.

DTC 21 Ignition Signal Diagnostic Chart:

DTC 21 Ignition Signal Diagnostic Chart:

DIAGNOSTIC CHART IMAGE

Ignition Signal Circuit (Power Transistor):

CIRCUIT DIAGRAM IMAGE

Power Transistor Connector Location:

Ignition Coil Connector Location:

Resistor And Condenser Connector Location:

ELECTRICAL CONNECTOR IMAGES