Connecting Cds G3; Using Cds G3; Accessing Ecm Information With Cds G3 - Mercury 15 EFI FourStroke Service Manual

General Troubleshooting
This manual assumes that you have successfully installed CDS G3 on your computer and have updated it to the most current
version. For installation instructions, refer to the user manual loaded onto the computer diagnostic system laptop (in the
Windows® Start menu > All Programs > Mercury Marine > User Manual).

Connecting CDS G3

CDS G3 Diagnostic Tool Kit
1. Insert the CDS G3 SmartCraft diagnostic interface USB connector into a USB port on your computer.
2. Connect the SmartCraft cable to the serial adapter cable from the CDS G3 cable kit.
CDS G3 Cable Kit
3. Connect the serial adapter cable to the diagnostic adapter harness.
4. Connect the diagnostic adapter harness to the ECM diagnostic connector on the engine.
5. Connect the red and black clips on the diagnostic adapter harness to the positive and negative battery terminals,
respectively.
d

Using CDS G3

CDS G3 will monitor sensors and ECM data, including status switches. The ECM program can help diagnose intermittent
engine problems. It can record the state of the engine sensors and switches for a period of up to 10 minutes, which can then be
played back and analyzed.
When using CDS G3 for troubleshooting, follow the driven troubleshooting menu for the complete diagnostic troubleshooting
procedures.

Accessing ECM Information with CDS G3

CDS G3 Diagnostic Tool Kit
Page 1E-8
ECM diagnostic connector (location approximate)
a
c
© 2018 Mercury Marine
8M0114141
8M0137534
62884
Diagnostic adapter harness
a - To serial adapter cable
b - To ECM diagnostic connector
b
c - 5‑amp fuse (in positive cable)
d - To 12 V battery
NOTE: For manual start models,
use a shop battery or other
suitable 12 volt battery.
64898
8M0114141
90-8M0125265 eng NOVEMBER 2017