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EMISSION CONTROL - V8 DESCRIPTION AND OPERATION 17-2-27 The ECM connector and pins pertinent for secondary air injection are listed in the following table: Secondary air injection system components Secondary air injection (SAI) pump 1 SAI pump cover Connector / Pin No. Description Signal type Control C0635-23 Main relay output Output drive Switch to ground C0636-4 Secondary air injection vacuum solenoid Output, drive Switch to ground C0636-16 Secondary air injection pump relay control Output drive Switch to ground C0636-21 Coolant temperature (ECT) sensor Ground 0V C0636-22 Coolant temperature (ECT) sensor Input signal Analogue 0 - 5V C0637-20 MIL "ON" Output drive Switch to ground M17 0204 1 4 2 3 |