BRP EVINRUDE E-TEC 115 HP 2011 Service Manual page 108

ELECTRICAL AND IGNITION
EXHAUST VALVE RELAY TESTS
Exhaust Valve Relay Module Test
High speed operation test:
•
Disconnect exhaust valve actuator connector
from relay module
•
Start and run engine at idle
•
Set multimeter to DC volts, check voltage with
red meter lead to pin 4 (orange/red wire) and
black meter lead to pin 1 (black wire)
•
Result should be 12 VDC
Low speed operation test:
•
Advance throttle until TPS exceeds 2 to 5%.
•
Observe Monitor screen for Exhaust Valve Indi-
cator to switch "LOW"
•
Check voltage with red meter lead to pin 2 (red
wire), black meter lead to pin 4 (orange/red
wire)
•
Result should be 12 VDC
If results are correct, problem is in actuator or link-
age.
If results are not correct, refer to EMM Outputs to
Relay Module Test on p. 106.
106
EMM Outputs to Relay Module
Test
Use back-probe to obtain results at engine har-
ness connector. Start and run engine. Use the
Evinrude Diagnostics software Monitor screen to
observe exhaust valve position indicator (High /
Low).
Engine Monitor Screen
•
Supply voltage: Check for voltage, red meter
lead to pin 1 (red/purple wire), black meter lead
to pin 2 (black/white). Result should be 12 VDC.
•
High speed mode: Check for voltage, red
meter lead to pin 4 (purple/black wire), black
meter lead to pin 2 (black/white). Result should
be 12 VDC.
•
Low speed mode: Check for voltage, red meter
lead to pin 4 (purple/black wire), black meter
lead to pin 3 (blue/black), result should be no /
low voltage. Increase engine rpm and observe
Monitor screen for Exhaust Valve Indicator to
switch "LOW." When indicator switches "LOW,"
result should be 12 VDC.
If results are correct, replace Relay Module.
If results are not correct, check engine electrical
harness before replacing EMM.
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