Honda GL1800 Service Manual page 536

3. Crank Angle Sensor Input Voltage Inspection
Disconnect the front modulator crank angle sen-
sor connector (3). Measure the voltage between
the Orange/green (+) and Pink/black (–) terminals
of the connector (3) with the ignition switch
turned to "ON." Standard: 4.5 – 5.5V.
Is voltage within standard range?
NO – GO TO STEP 7.
YES – GO TO STEP 4.
4. Crank Angle Sensor Short Circuit Inspection at
ABS Control Unit Connector
• Disconnect the ABS control unit 12P connec-
tor (8). Check for continuity between the
White/red terminal of the connector (3) and
ground.
Is there continuity?
NO – GO TO STEP 5.
YES – Short circuit in the wire between the
ABS control unit and modulator (angle
sensor).
5. Open Circuit Inspection Between ABS Control
Unit and Angle Sensor Modulator
Ground the White/red terminal of the connector
(8) with a jumper wire. Check for continuity
between the White/red terminal of the connector
(3) and ground.
Is there continuity?
NO – Open circuit in the wire between the
ABS control unit and modulator (angle
sensor).
YES – GO TO STEP 6.
BRAKE SYSTEM (ABS)
(3)
V
(3)
(8) (3)
16-19