Honda NSS250S Manual page 592

LIGHTS/METERS/SWITCHES
TACHOMETER SIGNAL LINE OPEN CIRCUIT
INSPECTION WITH TEST PROBE
Disconnect the following:
– Combination meter 28P (Gray) connector (page
22-10)
– ECM 33P (Black) connector (page 6-98)
Check the continuity between the combination
meter and ECM 33P connectors of the wire side.
TOOL:
Test probe
CONNECTION: Blue/yellow – Blue/yellow
There should be continuity.
If there is no continuity, check for open circuit in
Blue/yellow wire.
TACHOMETER SIGNAL LINE OPEN CIRCUIT
INSPECTION WITH TEST HARNESS
Connect the test harness between the wire harness
and ECM 33P connector (page 6-17).
Disconnect the combination meter 28P (Gray) con-
nector (page 22-10).
Check the continuity between the test harness and
combination meter connector of the wire side.
CONNECTION: 7 – Blue/yellow
There should be continuity.
If there is no continuity, check for open circuit in
Blue/yellow wire.
SYSTEM INSPECTION (NSS250A)
When the ignition switch turns ON, check all gauge
needles move to full scale and then return to zero.
If the tachometer needle does not show initial func-
tion but other needles show initial functions, faulty
combination meter.
If all gauge needles do not move, perform the
power and ground line inspection of the combina-
tion meter (page 22-10).
22-22
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07ZAJ-RDJA110
28P CONNECTOR
(Wire side/female terminal)
Blue/
yellow
33P CONNECTOR
(Wire side/female terminal)
28P CONNECTOR
(Wire side/female terminal)
(7)
TEST HARNESS 33P
Blue/yellow
Blue/yellow