Service manual

Engine Engine Electrical 6-21
2006 LSSV Service Manual Supplement
24V Generator Inoperative (cont’d)
Step Action Value(s) Yes No
6
Connect a test lamp between terminal 30 of the 24V
relay and ground.
Does the test lamp illuminate?
___
Go to Step 9 Go to Step 11
7
Repair the generator voltage circuit for an open or
high resistance.
Did you complete the repair?
___
Go to Step 17
___
8
Test the generator ground circuit for an open or high
resistance.
Did you find and correct the condition?
___
Go to Step 17 Go to Step 10
9
Repair the generator field circuit for an open or high
resistance.
Did you complete the repair?
___
Go to Step 17
___
10
Replace the generator. Refer to 24V Generator
Replacement.
Did you complete the replacement?
___
Go to Step 17
___
11
Connect a test lamp between terminal 85 and
ground.
Did the test lamp illuminate?
___
Go to Step 12 Go to Step 14
12
Connect a test lamp between terminal 86 and
ground.
Did the test lamp illuminate?
___
Go to Step 16 Go to Step 14
13
Repair the 24V relay control voltage circuit for an
open or high resistance.
Did you complete the repair?
___
Go to Step 17
___
14
Connect a test lamp between terminal 87 of the 24V
relay and ground.
Did the test lamp illuminate?
___
Go to Step 15 Go to Step 13
15
Replace the 24V relay. Refer to Relay Replacement
– 24V Generator.
Did you complete the replacement?
___
Go to Step 17
___
16
Repair the 24V relay ground control circuit for an
open or high resistance.
Did you complete the repair?
___
Go to Step 17
___
17
Operate the system in order to verify the repair.
Did you correct the condition?
___
System OK Go to Step 2