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The ERC lever controls the engine and drive, but does
not reach wide open throttle.
The ERC lever controls the engine and drive, but does
not respond in a linear manner.
When one ERC lever is moved, both engines respond.
The ERC control, joystick, and steering wheel do not
function.
Steering System
The steering wheel steers the boat, but operates without
resistance.
Steering wheel does not steer the boat.
Steering works, but the boat is not as responsive.
The steering wheel turned past end stop.
Power Trim Does Not Operate (Motor Does Not Operate)
Possible Cause
Blown fuse.
Loose or dirty electrical
connections or damaged
wiring.
90-864197084 NOVEMBER 2008
Symptom
Symptom
Replace fuse. Fuses may be located near the dash trim switch, at the trim pump, in the positive
(red) power trim battery lead near the battery switch, or a combination of these.
Check all associated electrical connections and wires (especially battery cables). Clean and
tighten faulty connection. Repair or replace wiring.
If the engine only reaches 50% of WOT, check the "DOCKING" button
on the DTS trackpad. Put the handles in neutral and push the button
to disengage, if light is on.
Check VesselView to see if cruise control enabled. Disable cruise
control.
Check for damage to the propeller. Check VesselView for Guardian
fault codes that indicate reduced engine power. If found, contact your
authorized Mercury MerCruiser dealer to ask if the propellers need to
be changed.
Check the "TROLL" button on the DTS track pad. Put the handles in
Neutral and push the "TROLL" button to disengage, if light is on.
Check whether dock mode or cruise control are on. If on, turn off or
disengage.
Check the "1 LEVER" button on the DTS track pad. If the light is on,
put the handles in neutral and push the "1 LEVER" button to
disengage.
Press "HELM" on DTS track pad to restore helm control. (Multiple
helm boats only.)
The starboard key switch is tuned off. Turn on the key.
Check and start the starboard engine.
Check if the starboard harness circuit breaker has tripped. Reset
the circuit breaker, if tripped.
Reduce speed and change to joystick for directional control.
Check steering fluid level and fill if necessary. See Section 5—
Maintenance.
Contact your authorized Mercury MerCruiser dealer.
Key off and key on.
Check and start the port engine.
Check the trim tab function.
Check the steering fluid level and fill if necessary. See Section 5
— Maintenance.
Contact your authorized Mercury MerCruiser dealer.
Key off and key on to restore steering wheel self‑centering, cruise
control, and to eliminate the fault code.
Remedy
Section 7 - Troubleshooting
Remedy
Remedy
Page 137
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Table of Contents
Troubleshooting
