BRP Cam-am Outlander 6x6 DPS 2015 Manual page 498

Section 09 WIRING DIAGRAM
Subsection 01 (WIRING DIAGRAM INFORMATION)
IMPORTANT: In an electrical circuit, the battery
usually provides power to a switch, which then
supplies the electric component when the switch
contacts are closed (low power circuits). There-
fore the switch opens and closes the positive side
of the circuit. In circuits controlled by the ECM
and other modules, the battery supplies the elec-
tric component, and the ECM/module acts as the
switch which completes the circuit to ground. A
relay acts as a remote switching device for higher
power components or for supplying multiple cir-
cuits. Take this into account when troubleshoot-
ing the electrical system.
Pay attention to ground wires. They could be-
come loose or corroded which causes them to
act as an additional load in a circuit, dropping
voltage and reducing current to components.
Some components may be grounded through
their outer casing and mounting hardware. This
should also be considered.
COMMON SUBSYSTEM
POWER AND
– Battery
GROUNDS
– Fuses
– Relays
– Connections
INPUTS AND
– Sensors
OUTPUTS
– Gauges
– Actuators
– Motors
COMMUNICATION
– Between Modules and
For ALL wiring tests, you need to check for:
POSSIBLE PROBLEM
– Open circuit
– Shorts to ground (battery -)
– Shorts to battery (+)
– Shorts to other circuits
– Higher resistance than desired
626
– Check if a group of components or systems stopped
– Start from the power source (battery) and move outwards
– Check grounds and battery (+) using a voltmeter.
– Disconnect and test wiring.
– View monitoring functions in B.U.D.S.
– Activate all possible items and monitor response.
– Disconnect and test wiring.
– View monitoring functions in B.U.D.S.
with B.U.D.S.
– Disconnect and test wiring.
– Loose terminals, broken wires.
– Wires rubbed through, water in connectors.
– Corroded wires and terminals.
Simplifying Electrical System Tests
For complex systems where there are electronic
modules, sensors, actuators, relays etc., it is of-
ten beneficial for diagnosing problems to divide up
the system into some basic smaller subsystems,
to help narrow down where the problem lies.
Use B.U.D.S. to check for fault codes, refer to
COMMUNICATION TOOLS AND B.U.D.S.
DIAGNOSTIC SYSTEM AND FAULT CODES
also
subsections. Follow Service Actions listed in
B.U.D.S.
GUIDELINE
working or if nothing works (lights, gauge, etc.).
towards the modules, checking for voltage at each
connection.
COMMON CAUSE
and
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