04-2
Section 04 DESS SYSTEM
1. DESS indicator light
Buzzer
This buzzer comes on to indicate the DESS status.
The buzzer is heard twice to indicate that the
proper tether cord has been connected. The en-
gine can then be operated at full RPM.
The buzzer is heard once every 3 seconds to indi-
cate a bad connection of the tether cord, and
therefore, the engine revolution cannot exceed
2500 RPM.
The buzzer is heard continuously when connect-
ing a wrong tether cord. It is then impossible to
operate the engine at more than 2500 RPM.
When backing up, the buzzer is heard once every
second.
1. Buzzer
TESTING PROCEDURE
Buzzer
Unplug buzzer wires. Plug a battery in good oper-
ating condition to buzzer connectors. Observe po-
larity (the + and - signs are printed on the buzzer).
Replace the buzzer if it remains silent.
Buzzer Supply
With the engine running, connect a jumper be-
tween ground and buzzer negative connector. The
buzzer should then be heard. If not, check positive
supply as follows. Plug the positive probe of a
voltmeter to the buzzer RED/YELLOW wire (4-02)
and the negative sensor to ground. The voltage
must be the same as that of the battery. If not,
check RED/YELLOW wire continuity.
If the positive supply is good, check BEIGE/
BLACK wire leading to the MPEM. If this wire is
good, replace MPEM and recheck.
Tether Cord Switch
Switch Continuity Check
Connect an ohmmeter to BLACK/GREEN (6-01B)
and BLACK/WHITE wires (6-01C). Install a tether
cord in good operating condition previously
checked with programmer. Resistance must be
equal to zero (0).
A06H34A
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A06E2IA
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