Electrical Circuit Tests; Relay Testing; Trim And Tilt Motor Current Draw Tests - BRP Evinrude E-TEC Series Service Manual

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 button 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. 100 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.
IMPORTANT:
Specifications
hydraulic tests. DO NOT attempt to perform the
following tests while the boat is moving.
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
Stall UP
Stall DOWN
Full Range UP
Full Range DOWN
Test results include three basic possibilities:
A. Low current draw – Check for:
•
are for static Valves leaking
•
Pump damaged
•
O-rings leaking
•
Manual release valve damaged
B. High current draw – Check for:
•
Valves sticking
•
Pump binding
•
Motor binding
•
Cylinder binding
C. Normal current draw, slow operating
speed – Check for:
•
Manual release valve damaged
TRIM AND TILT

ELECTRICAL CIRCUIT TESTS

Normal
Current Draw Seconds
11 to 16 Amps
16 to 22 Amps
–
–
1
005441
Time in
–
–
13 to 19
10 to 16
13
271