Inspection Of Ignition Coils; Inspection Of Pick Up Coil (Crank Position Sensor); Inspection Of Pick Up Coil Air Gap - TOHATSU MD 70-90C2 Service Manual

Electrical System

9) Inspection of Ignition Coils

This test can be made without removing parts.
1. Remove ignition coil coupler.
2. Measure ignition coil resistance. Replace if other than
specified value.
Ignition Coil Resistance :
Primary Side :
Secondary Side : Between c and d 10.8 - 16.2 kΩ
3. Install plug cap onto high tension cord by twisting
clockwise.
4. Connect plug cap to spark plug.
10) Inspection of Pick Up Coil
(Crank Position Sensor)
Disconnect pick up coil 1 connector.
2.
3. Measure resistance between terminals.
Replace pick up coil if the resistance is out of specified
range.
Resistance between Terminals : @20˚C (68 ˚F)
425 - 637 Ω

11) Inspection of Pick Up Coil Air Gap

Measure air gap a between pick up coil 1 and flywheel
1.
2.
Adjust air gap if out of specified range.
Air Gap a :
0.7 - 1.0 mm (0.028 - 0.039 in)
8-12
Between a and b 0.4 - 0.6 Ω
(6.8 - 10.2 kΩ without plug cap)
a b c
d
2
1
1 1
a
TLDI 75/90C2 2010