Sakai SW800-II, Руководство по ремонту

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10-005
TROUBLESHOOTING
1-2) Measuring resistance of harness (measuring resistance between terminal 1 of equipment A and terminal 2
of equipment B)
3 4 2 5 1
2 3 1
2 3 1
1 2 3 1 2 3 4 5
GW750‑2‑10005
Equipment A
Connector A
Harness
Ohmmeter
(tester)
Main power source
of equipment B
Ground of
equipment A
Signal from
equipment A
Power to
equipment A
Connector B
Equipment B
Equipment A
Equipment B
Inspection procedure
①
Disconnect the connectors of equipment A and equipment B.
②
Connect the test probe (+) to connector terminal 1 of equipment A and the test probe (-) to connector
terminal 2 of equipment B and measure the resistance. At this time, reversing the connector terminals
between the probes (+) and (-) does not make any difference in the measurement.
Criteria for harness defects
When there is no abnormality in the harness: Less than 10 Ω (measured value)
If there is any abnormality in the harness such as broken wire: 10 Ω or higher (measured value)
1-3) Measuring resistance of grounding wire (measuring resistance between terminal 5 of equipment B and
ground)
1 2 3 4 5
5 1
GW750‑2‑10006
Connector A
Harness
Ohmmeter
(tester)
Main power source
of equipment B
Equipment B
Battery
Equipment B
Inspection procedure
①
Disconnect the connector of equipment B.
②
Connect the test probe (+) to connector terminal 5 of equipment B and the test probe (-) to a vehicle
ground point (the bolt fastening the ground terminal or an unpainted portion on the body) and measure
the resistance. At this time, reversing the connector terminals between the probes (+) and (-) does not
make any difference in the measurement.