Dodge RAM TRUCK 1500 1995 Service Manual page 349

8A- 16 BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS
FIELD COIL
TERMINAL
RR8BD32
Fig. 18 Continuity Test Between Solenoid Terminal
and Field Coil Terminal
SOLENOID
RR8BD33
Fig. 19 Continuity Test Between Solenoid Terminal
and Solenoid Case
(4) If there is continuity, solenoid is good. If there
is no continuity in either test, solenoid has an open
circuit and is faulty. Replace starter assembly.
(5) Connect solenoid field coil wire to field coil ter­
minal.
(6) Install starter as described in Group 8B - Bat­
tery/ Starter/Generator Service.
iELAY TEST
The starter relay is in the Power Distribution Cen­
ter (PDCXFig. 20). Refer to the underside of the PDC
cover for relay location.
. Remove starter relay from PDC to perform the fol­
lowing tests:
(1) A relay in the de-energized position should
have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
to next step. If not OK, replace faulty relay.
(2) Resistance between terminals 85 and 86 (elec­
tromagnet) should be 75±5 ohms. If OK, go to next
step. If not OK, replace faulty relay.
(3) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If OK, go to Relay Circuit Test. If not OK,
replace faulty relay.
iELAY CIRCUIT TEST
(1) The common feed terminal (30) is connected to
battery voltage and should be hot at all times. If OK,
go to next step. If not OK, check circuit to fuse F12
in Power Distribution Center (PDC). Repair as re­
quired.
POWER
DISTRIBUTION
CENTER
(PDC)
J9414-10
Fig. 20 Power Distribution Center
STARTER RELAY CONNECTIONS
RELAY TERMINALS
87A
RELAY CAVITIES
85
f&TAT] 86
30
J958A-2
TERMINAL LEGEND
NUMBER IDENTIFICATION
30 COMMON FEED
85 COIL GROUND
86 COIL BATTERY
87 NORMALLY OPEN
87A NORMALLY CLOSED
(2) The normally closed terminal (87A) is con­
nected to terminal 30 in the de-energized position,
but is not used for this application. Go to next step.
(3) The normally open terminal (87) is connected to
the battery terminal (30) in the energized position.
This terminal supplies battery voltage to the starter
solenoid field coils. There should be continuity be­
tween cavity for relay terminal 87 and the starter so­
lenoid terminal at all times. If OK, go to next step. If
not OK, repair circuit to solenoid as required.
(4) The coil battery terminal (86) is connected to
the electromagnet in the relay. It is energized when
the ignition switch is in the START position. Check
for battery voltage at cavity for relay terminal 86
with ignition switch in the START position. If OK, go
to next step. If not OK and vehicle has automatic
transmission, refer to Group 8D - Ignition Systems
for testing and service of the ignition switch. If not
OK and vehicle has manual transmission, refer to
Group 6 - Clutch for testing and service of the clutch
pedal position switch.