TOHATSU MFS 8B Service Manual page 266

1. Check wire harness for disconnection of lead wire and
defective connection.
• Terminals are arranged and numbered as shown.
• The following table shows names of terminals and lead wire
colors.
No. Name
1 Warning Lamp
2 Oil Pressure Switch
3 Vacant
4 Tachometer
5 Ignition Coil (+)
6 GND
7 Exciter Coil (H)
8 Stop Switch
9 Exciter Coil (L)
10 Pulser Coil
1. Use following tester check chart to check conductivity and
measure resistance.
White/Red (W/R)
Warning Lamp
Light Green (Lg)
Oil Pressure Switch
White (W)
Tachometer
Orange (Or)
Ignition Coil
Black (B)
GND
Blue/Red (L/R)
Exciter Coil (H)
Brown (Br)
Stop Switch
Black/Red (B/R)
Exciter Coil (L)
Red/White (R/W)
Pulser Coil
Note) It is recommended to use "HIOKI HiTESTER MODEL 3030" for this measurement. Use of other instrument
model for the measurement can cause indication of abnormal value for normal condition, resulting in
inaccurate measurement.
Disconnect all connections to measure as an independent unit.
Any movement of pointer indicates "ON" or "conductive" state.
"CON" means that the pointer moves once and then returned to the value shown in ( ) because of
characteristic of capacitor.
The value in ( ) is the condition applied when "1kΩ" range is used. The measurement varies widely among types
of instrument, situations (such as inner power supply), or measurement ranges due to diodes used in the unit.
Perform this inspection only as a guide.
8-22
Lead Wire Color
White/Red W/R
Light Green Lg
— —
White W
Orange Or
Black B
Blue/Red L/R
Brown Br
Black/Red B/R
Red/White R/W
White/Red
Light Green (Lg) White (W)
(W/R)
Oil Pressure Switch Tachometer
Warning Lamp
CON CON
(45kΩ) (55kΩ)
OFF OFF
(∞) (∞)
OFF CON
(∞) (35kΩ)
CON ON ON
(∞) (14kΩ) (18kΩ)
OFF ON ON
(∞) (4kΩ) (6kΩ)
CON ON ON
(∞) (130kΩ) (130kΩ)
OFF OFF OFF
(∞) (∞) (∞)
OFF CON CON
(∞) (33kΩ) (40kΩ)
OFF ON ON
(∞) (8kΩ) (10kΩ)
Tester Lead Positive (+) Side (Red)
Orange (Or) Black (B)
Ignition Coil GND Exciter Coil (H)
CON CON
(∞) (22kΩ)
OFF OFF
(∞) (∞)
CON CON
(∞) (18kΩ)
ON
(4kΩ)
CON
(∞)
CON ON
(∞) (100kΩ)
OFF OFF
(∞) (∞)
CON CON
(∞) (17kΩ)
CON ON
(∞) (3kΩ)
Blue/Red (L/R) Brown (Br) Black/Red (B/R)
Stop Switch Exciter Coil (L)
CON CON CON
(35kΩ) (100kΩ) (45kΩ)
OFF OFF OFF
(∞) (∞) (∞)
CON CON CON
(26kΩ) (75kΩ) (38kΩ)
ON ON ON
(13kΩ) (45kΩ) (14kΩ)
ON ON ON
(4kΩ) (14kΩ) (5kΩ)
ON ON
(4kΩ) (130kΩ)
OFF OFF
(∞) (∞)
CON CON
(23kΩ) (65kΩ)
ON ON ON
(8kΩ) (20kΩ) (8kΩ)
⑩
⑩
Red/White
(R/W)
Pulser Coil
CON
(28kΩ)
OFF
(∞)
CON
(22kΩ)
ON
(8kΩ)
ON
(3kΩ)
ON
(100kΩ)
OFF
(∞)
CON
(20kΩ)
4st 8/9.8 2016