Inspection Of Power Relay; Inspection Of Air Injectors; Inspection Of Fuel Injectors - TOHATSU TLDI MD 115A SERIES Service Manual

14) Inspection of Power Relay

Measure resistance between a and b terminals.
1.
Replace relay if the resistance is out of specified range.
This test can be made without removing parts.
Resistance between a and b terminals :
@20˚C (68˚F)
90 - 110 Ω
Apply 12V between terminals a and b and check
2.
conductivity between c and d.
Resistance between terminals : @20˚C (68˚F)
To be conductive when 12V is applied between
a and b.
To be non conductive when no voltage is applied
between a and b.

15) Inspection of Air Injectors

1. Measure resistance between terminals.
Replace air injector if the resistance is out of specified
range.
This test can be made without removing parts.
Resistance between terminals : @20˚C (68 ˚F)
1.2 - 1.4 Ω
2. Apply 12V to the terminals to check if the part "clicks".
If not, replace air injector.

16) Inspection of Fuel Injectors

1. Measure resistance between the terminals, and replace
fuel injector if the resistance is out of specified range.
This test can be made without removing parts.
Resistance between terminals : @20˚C (68˚F)
1.7 - 1.9 Ω
2. Apply 12V to the terminals to check if the part "clicks".
If not, replace fuel injector.
TLDI 115A 2007
c
b
a
d
12V
8
8-11