Kenworth SmartWheel KM816010, Руководство по устранению неисправностей

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MAINTENANCE MANUAL
Kenworth SmartWheel Troubleshooting Guide
16
Purpose
The purpose of this guide is to locate malfunctions in the
• wiring
• connectors
• power distribution box relays
• steering wheel hub
• multiplex electronics module
• slip rings
If the wiring, connectors, and relays are functioning prop-
erly, it is reasonable to assume that the malfunction is in
the multiplex wheel system (hub, module, or slip rings).
IMPORTANT: Verify a malfunction in the SmartWheel
steering wheel hub or the multiplex electronics module
before replacing them.
The only way to check these
components is with the Kenworth SmartWheel Multi-
plex Steering Wheel Tester.
Replacing these compo-
nents will not correct the malfunction if the problem is due
to open wires, poor connections, or bad relays.
CAUTION: Do not attempt to disassemble the elec-
tronics module or the steering wheel hub. Disassem-
bly will void warranty.
How to use this Troubleshooting
Guide
Check the multiplex wheel for proper operation according
to the Kenworth Multiplex Steering Wheel Operating
Manual.
If none of the functions on the steering wheel work or
they work erratically, go to Section A, Start.
If some of the functions on the steering wheel work, go to
the Section for the function that doesn't work.
Tools for Troubleshooting
• Kenworth SmartWheel Multiplex Steering Wheel Tes-
ter (strongly recommended). - Volt-ohmmeter rated
at 20,000 ohms per volt. For proper connections, see
Figure 16-2.
• Wiring diagrams. See Appendix of this manual.
• Operating Manual for Kenworth SmartWheel Multi-
plex Control System.
NOTE: Excellent basic troubleshooting procedures are
described in the Kenworth Electrical Troubleshooting
Manual. This manual is useful if you are unfamiliar with
how to use an ohmmeter or need suggestions for electri-
cal troubleshooting techniques.
CAUTION: Before connecting an ohmmeter to a cir-
cuit, disconnect the power source. Then verify that
the circuit is without voltage by connecting a voltme-
ter to the circuit. Ohmmeter may be damaged if con-
nected to a voltage source.
Figure 16-2