4-12 ELECTRICAL
STARTER MOTOR RELAY
Two methods can be used to test starter motor relay.
09930-99320 : Digital tester
Method 1
1. Disconnect all cables / lead wires from starter motor relay.
2. Measure resistance between relay wiring leads.
U Tester range :
(Resistance)
Starter motor relay solenoid coil resistance :
3.5 – 5.1
If measurement exceeds specification, replace starter motor
relay.
Method 2
Connect the wiring leads of the relay to battery (12V) and check
relay operation.
S Tester range : (Continuity)
1. Disconnect all cables / wires from starter motor relay.
2. Connect Yellow /Green wire to positive + terminal, and Black
wire to negative - terminal of battery.
When 12V applied : Continuity between relay
terminal
1 1
1 1
1 and
22
22
2.
3. Disconnect wiring leads from battery.
No voltage applied : No continuity between
relay terminal
11
11
1 and
22
22
2.
If out of specification, replace starter motor relay.
Tester probe connection
Red
++
++
+ Black
--
--
-
Yellow / Green Black
[
B
Y/G
1
2
B
Y/G
+-
12V Battery
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