Electrical Circuit Tests; Relay Testing; Trim And Tilt Motor Current Draw Tests - BRP E250DHLSCS Service Manual

TRIM AND TILT

ELECTRICAL CIRCUIT TESTS

ELECTRICAL CIRCUIT
TESTS

Relay Testing

When the trim-UP button is pressed, the UP relay
is energized and connects the blue trim motor
wire to the battery positive (+) terminal. The green
trim motor wire remains grounded. When the but-
ton is released, the blue trim motor wire returns to
a grounded position.
When the trim-DOWN button is pressed, the
DOWN relay is energized and connects the green
trim motor wire to the battery positive (+) terminal.
The blue motor wire remains grounded. When the
button is released, the green trim motor wire
returns to a grounded position.
Refer to TILT/TRIM RELAY TEST on p. 141 for
relay testing procedure.
Trim and Tilt Motor Current Draw
Tests
Careful analysis of the electric motor's current
draw and trim/tilt unit operating speed aids evalu-
ation of the electric motor and certain mechanical
components.
Use a battery rated at 360 CCA (50 Ah) or higher
that is in good condition and fully charged to per-
form this test.
Specifications
IMPORTANT:
hydraulic tests. DO NOT attempt to perform the
following tests while the boat is moving.
326
Connect a 0 to 100 A DC ammeter in series
between the battery side of the starter solenoid
and the red lead to the trim/tilt relay module.
1. Red lead
Observe ammeter and a stopwatch while running
hydraulic unit through several complete cycles.
Compare test results to the values listed.
Mode
Trim-OUT (Trim range)
Tilt-UP Stall
Trim-IN (Trim range)
Trim-IN Stall
Test results include three basic possibilities:
A. Low current draw – Check for:
•
are for static
•
•
•
•
•
Valves leaking
Relief valve springs weak
Pump damaged
O-rings leaking
Check valves fouled or damaged
Manual release valve damaged
005441
Normal Time in
Current Draw Seconds
22 A 9
60 to 75 A N/A
16 A 9
35 to 45 A N/A
1