Yanmar 3TNV82A Troubleshooting Manual page 167

Method and Procedure of Failure Diagnosis
Wiring Diagram
: Check points
Sensor side coupler
(coupling face)
B
A
*For the E-ECU Pin Layout, see [E-ECU Pin Layout Diagram] (P.1-134)
TNV DI Service Manual
Key switch
"ON" or "START"
Speed Sensor
CRK+
CRK-
Spare speed sensor (option)
(Alternator)
B
IG
L
P
Battery ＋ −
Fuse
15A
Fuse
5A
A
B
FAILURE DIAGNOSIS
Starter
B
S
E-ECU
E08
STARTSW
E19
NRPM
E18
NRPM-GND
Harness side coupler
(coupling face)
B19 E18
E10
RENRPM
017544-00E
1-165