Pontiac FIREBIRD 1972 Service Manual page 765

ENGINE ELECTRICAL 6E-3
"Start" Position
Starter Engages ("Clunks")
But Engine Does Not Crank
Turn on Headlights
and Repeat Check
Lights Dim While
Cranking
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Check for Open Circuit
In Solenoid. Armature
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Check for Short or
or Field Coils
Ground In Field Coil
or Armature
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1
No Sound From Starter
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(Auto. Trans.) or Move Clutch Pedal (Man. Trans.)
CAUTION: Push on Brake Pedal.
Car Still Won't
Start
u
Car Starts
u
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Check Condition of Battery and Cables
(Charge Should
be
Over 1.225)
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Readjust Neutral
Start Switch
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BaUery and Cables 0.1.
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Loose Battery Cables
or Low h t t e r y
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Check Accessory Operation
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Correct As Necessary
Ezl
Accessories Do Not
Operate
Accessories Operate O.K.
r - l
Llght Only Liphts Lipht Lights At
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Li" &Eilher
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at One Wire
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Bolh Wlres
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Check for Burned Fusible Llnk
Correct Wiring Problem Then
Recheck Starting
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Should Light.
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With Tesl Light Connected Between Neutral
Start Switch Connector and Ground. Turn
Key To "Start" Posilion. Light Should Come
On At Bolh Purple Wires.
Light Lights
Light Does Not
C o n n e c t T e s l L i p h t
B e t w e e n Solenoid "S"
Repair Opm
Terminal and Ground
-
Clrcult In
T u r n K e y t o "Start"
Firewall Connector
Position. L i g h t Should
Liphl.
Light Does Not Light Lights
Ll;ht*
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1 - 1
Change Purple Repair Solenoid Switch
Fig. 6E-2 Cranking System
-
Trouble Diagnosis