14. BATTERY/CHARGING SYSTEM/
A.C. GENERATOR
14-7
REGULATOR/RECTIFIER
MAIN HARNESS CIRCUIT
INSPECTION
Remove the regulator/rectifier 4P coupler
and check for continuity between the wire
harness terminals according to the
following :
Item (Wire Color) Judgment
Between battery (red)
and engine ground
Battery has
voltage
Between ground (green)
and engine ground
Continuity exists
Between lighting wire
(yellow) and engine
ground (Remove the
resistor cou
ler and auto
bystarter coupler and
turn the lighting switch
OFF for inspection)
A.C. generator
stator has
resistance
Between charging coil
(white) and engine
ground
A.C. generator
stator has
resistance
REGULATOR/RECTIFIER
INSPECTION
If the main harness terminals are normal,
check the regulator/rectifier coupler for
loose connection and measure the
resistances between the regulator/rectifier
terminals.
Replace the regulator/rectifier if the
readings are not within the specifications in
the table.
Probe⊕
Probe(-)
White Yellow Red Green
White ∞∞∞
Yellow ∞∞10.75M
Red 6.62M ∞∞
Green ∞ 11.17M ∞
• Do not touch the tester probes with
your finger because human body has
resistance.
• Use the following specified testers for
accurate testing. Use of an improper
tester in an improper range may give
false readings.
Testing instrument
YF-3501
• If the dry battery in the tester is weak,
the readings will be incorrect. In this
case, check the dry battery.
*
Regulator/Rectifie