TOHATSU 40 Service Manual page 210

The exciter coil test is used to determine the output
7 8
voltage, in DVA, from the exciter coil (1), located on
the coil plate assembly (2) [models 40 / 50 / 60 / 70 / 80 / 90] or the
alternator assembly (2) [models 115 / 120 / 140] to the CD Unit (3)
while you are cranking the engine.
1. Disconnect the following terminals:
Engine Models
40 / 50 / 60C / 70C /80 /
90 / 115 / 120 / 140
60B and 70B
2. Set the digital multimeter to ohms and connect the leads
between the following terminals to read the resistance of the exciter
coil:
Engine Models
40 / 50 / 60C / 70C / 80 /
90 / 115 / 120 / 140
60B and 70B
3-/ 4-Cylinder
ELECTRICAL SYSTEM
Disconnect Terminals
4, 5, 6, and 7
4, 5, 6, 7, 8, and 9
Connect Multimeter
Between These Terminals
4 and 6
Test 1 - 4 and 8
Test 2 - 6 and 8
T1480
7-31