California Air Tools 3010 Service Manual Page 370

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15-22 STEERING
EPS (Electric Power Steering) System
There are 40 A and 7.5 A fuses for the EPS system. If
the fuse is blown, the EPS system does not operate. In
this case, t he EPS warning indicator light (LED) does not
light up and even if main switch is turned ON. Replace the
fuse.
WARNING
When replacing the 40 A fuse, first disconnect the
battery cables to avoid electrical shock.
If the EPS system fuses are blown frequently, inspect the
EPS system parts.
If the EPS ECU was replaced, be sure to register the EPS
neutral position (see EPS Neutral Position Registration).
The EPS system can not function until the neutral posi-
tion is registered in the new EPS ECU. In t his case, the
EPS warning indicator light (LED) blinks immediately af-
ter main switch ON.
If the following parts were removed or replaced, be sure
to register the neutral position of the EPS (see E PS Neu-
tral Position Registration). If the neutral position does not
register, EPS system does not operate correctly.
EPS Unit
Upper and Lower Universal Joints
Steering Gear Assembly
Steering Knuckles
Do not loosen the following bolts and nuts except repair
work. If the following bolts and nuts were loosened, be
sure to register the EPS neutral position (see EPS Neu-
tral Position Registration). If the neutral position does not
register, EPS system does not operate correctly.
Steering Gear Assembly Bracket Bolts
Tie-Rod End Nuts
Universal Joint Clamp Bolts
EPS Unit Mounting Bolts
Before delivering the vehicle to the customer, be sure to
erase any service codes which might be stored in the EPS
ECU. Using the self-diagnosis function, confirm that the
EPS warning indicator light (LED) lights up (This shows
that there is no service code in the EPS ECU.).
EPS System Troubleshooting Outline
The EPS ECU is equipped with a self-diagnosis function.
When an abnormality in the EPS system occurs, the EPS
ECU lights the EPS warning indicator light (LED) [A] to alert
the rider. In addition, the condition of the problem is stored
in the memory of the EPS ECU as service codes and in
the self-diagnosis mode, the service code is indicated by
the number of times the EPS warning indicator light (LED)
blinks.
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