Iac Test - Mercury 25 EFI Service Manual

IAC Test

The operation of the IAC can be measured with the CDS tool and adapter harnesses.
18 1
1
22
16
34 17
CDS G3 Diagnostic Tool Kit
Adapter Harness
Adapter Harness
Extension Cable
1. Apply 69 kPa (10 PSI) vacuum to the top port of the IAC.
2. Ensure the IAC holds the vacuum pressure.
3. Apply 12 volts to the terminals of the IAC.
90-8M0105568 eng MARCH 2016
b
c
a
BLU
BLU/BLK
GRN/RED
GRN/RED
BLU
22594
8M0114141
84‑899150T01
84‑822560A7
84‑825003A 1
© 2016 Mercury Marine
Service Procedures
a - ECM engine harness
connector
b - Idle Air Control (IAC)
c - Vapor Separator Tank
(VST)
Page 3C-53