Chrysler 1998 Viper RT/10 Owner's Manual page 271

S R
STARTING 8B - 3
D I A G N O S I S A N D T E S T I N G ( C o n t i n u e d )
STARTER FEED CIRCUIT TESTS
The following procedure w i l l require a suitable
volt/ampere tester(Fig. 2).
C A U T I O N : F u e l a n d Ignition s y s t e m m u s t b e d i s -
a b l e d to p r e v e n t e n g i n e f r o m s t a r t i n g w h i l e per-
f o r m i n g a n y of t h e following t e s t s .
(1) Connect a volt-ampere tester (Fig. 2) to the
battery terminals (Fig. 3). Refer to the operating
instructions provided w i t h the tester being used.
(2) Disconnect the Automatic Shut Down (ASD)
relay, and the ignition and fuel system w i l l be dis-
abled. The ASD is located i n the Power Distribution
Center (PDC). Refer to the PDC cover or W i r i n g Dia-
grams 8W-11 Power Distribution for location of the
relay.
V O L T S E L E C T O R HELD S E L E C T O R TEST S E L E C T O R
898A-8
Fig. 2 Volt Ampere Tester
POSITIVE CLAMP
NEGATIVE
CLAMP
INDUCTION
AMPMETER
CLAMP
SIDE TERMINAL
ADAPTERS
FUSIBLE LINKS
938A-40
Fig. 3 Volt-Ampere Tester Connections
(3) Verify t h a t a l l lights and accessories are OFF,
and set p a r k i n g brake.
(4) Rotate and hold the ignition switch i n the
START position. Observe the volt-ampere tester (Fig.
4).
• I f voltage reads above 9.6 volts, and amperage
draw reads above 250 amps, go to the Starter Feed
Circuit Resistance Test.
• I f voltage reads 12.4 volts or greater and amperage
reads 0 to 10 amps, go to Starter Control Circuit Test.
C A U T I O N . D o not o v e r h e a t t h e s t a r t e r motor o r
d r a w t h e battery v o l t a g e b e l o w 9.6 v o l t s d u r i n g
c r a n k i n g o p e r a t i o n s .
(5) After the starting system problems have been
corrected, verify the battery state of charge and
charge battery i f necessary. Disconnect a l l testing
equipment and connect a l l cables, wires, and ASD
relay t h a t were disconnected. Start the vehicle sev-
eral times to assure the problem was corrected.
898A-21
Fig. 4 Starter Draw Tests
STARTER FEED CIRCUIT RESISTANCE TEST
Before proceeding w i t h this operation, review Diag-
nostic Preparation and Starter Feed Circuit Tests.
The following operation w i l l require a voltmeter,
accurate to one t e n t h of a volt.
C A U T I O N : F u e l a n d ignition s y s t e m m u s t b e d i s -
a b l e d to p r e v e n t t h e e n g i n e f r o m s t a r t i n g w h i l e per-
forming a n y of t h e following t e s t s .
(1) Disconnect the Automatic Shut Down (ASD)
relay to disable fuel and ignition system. The ASD is
located i n the Power Distribution Center (PDC).
Refer to PDC cover or w i r i n g Diagrams 8W-11 Power
Distribution for location. Refer to Group 8D, Ignition
for more A S D information.
(2) W i t h a l l w i r i n g harnesses and components
properly connected, perform the following:
(a) Connect the negative lead of the voltmeter to
the battery negative t e r m i n a l , and positive lead to
the battery negative cable clamp (Fig. 5). Rotate
and hold the ignition switch i n the START posi-
tion. Observe the voltmeter. I f voltage is detected,
correct poor contact between cable clamp and post.