Problem Code 14: Power Circuit - Honda GL1800 Service Manual

BRAKE SYSTEM (ABS)

Problem Code 14: Power circuit

1. Battery Charging System Inspection
• Ask the rider about the following when the
motorcycle is brought in for inspection. This
problem code will light up to indicate battery
discharge.
– Ask whether the motorcycle has been run
– Ask whether the motorcycle has been left
• Check to see whether the indicated idle speed
matches the specified idle speed.
Check the battery for charging condition.
Is the charging system normal?
NO (low or no voltage) – Check
YES
2. ABS Indicator Function Inspection
Retrieve the problem code and erase it. Perform
the pre-start self-diagnosis and check the ABS
indicator.
Is the indicator blinking?
NO (ON) – GO TO STEP 3.
NO (OFF) – Normal (temporary failure). The ABS
YES
3. Input Voltage Inspection
Disconnect the ABS control unit 5P connector (9)
and (7). Measure the voltage between the Red/
blue (+) and Green (–) terminals of the connector
(9), and between the Red/green (+) and Green (–)
terminals of the connector (7). There should be
voltage at all times. Standard: 10 – 17V.
Is the voltage within the standard value?
NO
YES (normal 10 – 17 V at both connectors) –
4. Check Voltage After Replacing Battery
Retrieve the problem code and verify that the
problem code is "14." Erase the problem code.
Replace the battery with a new fully charged bat-
tery. Perform the pre-start self-diagnosis and
check the ABS indicator.
Is the indicator blinking?
YES
NO
16-26
with large capacity electric load accesso-
ries.
for long time with the ignition switch turned
to "ON" (after the pre-start self-diagnosis).
charging system (section 16).
– GO TO STEP 2.
control unit has been disrupted by an
extremely powerful radio wave. Check
the connector and wire harness for
loose connection.
– GO TO STEP 4.
– Check the wire between the battery and
fuse box for open or short circuit. If the
wire harness is OK, check the charging
system (section 16).
• Faulty ABS control unit.
– Faulty ABS control unit.
– Faulty removed battery.
the battery
(9)
V
(7)
V