Yanmar 3TNV82A Troubleshooting Manual page 173

Method and Procedure of Failure Diagnosis
Wiring Diagram
: Check points
Relay side coupler
(coupling face)
A
Rack Actuator Relay
A D C B
Harness side coupler
(coupling face)
E07 E48 B17
E33 --
TNV DI Service Manual
C
B
D
Main relay
--
B17
Rack Actuator
To the upstream of the coil.
Battery
ECU
Fuse
10A
FAILURE DIAGNOSIS
＋ −
Fuse
15A
Fuse
5A
E-ECU
E34
MAIN-RLY
E48
VB
E07
IGNSW
E33
RACK-RLY
Key switch
"ON"
017546-00E
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