Sakai SV540 Series, Shop Manual

Page: 212 / 306

9-004
TROUBLESHOOTING
2-1-2. Inspection procedures using a tester
Some of the various inspection procedures are presented here for reference, using a sample circuit below.
3 4 2 5 1
2 3 1
Equipment A
Battery
Main power source
of equipment B
Ground of
equipment A
Equipment B
Signal from
equipment A
Power to
equipment A
GW750‑2‑10003
1) Measuring resistance using tester
1-1) Measuring resistance of equipment A (measuring resistance between terminals 1 and 3)
1 2 3
3 4 2 5 1
2 3 1
2 3 1
GW750‑2‑10004
Equipment A
Connector
Harness
Equipment A
Ohmmeter
(tester)
Equipment B
Main power source
of equipment B
Signal from
equipment A
Power to
equipment A
Ground of
equipment A
Inspection procedure
①
Disconnect the connector of equipment A.
②
Connect the test probe (+) to connector terminal 1 of equipment A and the test probe (-) to connector
terminal 3 of equipment A and measure the resistance. At this time, reversing the connector terminals
between the probes (+) and (-) does not make any difference in the measurement.