Pontiac Fiero 1988 Service Manual page 992

STARTER AND CHARGING SYSTEM I
V6
VIN
9
AND
L4
VIN R
(Continued from
previous
1
page)
A : S T A R T E R S O L E N O I D D O E S NOT
C L I C K A N D ENGINE D O E S NOT
C R A N K ( T A B L E 6)
Measure: VOLTAGE
At: IQPJfTSOU SWITCH COMPJECTQR
(Connected)
Measure
Between
Correct
Voltage
For Diagnosis
B 2
(RED) &
Ground
Battery
Seel
B3 (RED) &
Ground
Battery Seel
• Ignition Switch: START
S(YEL)&
Ground
Battery See
2
G
If all voltages are correct, check YEL (5)
wire
for an open (see schematic).
1.
Check
RED (2) wire(s) and Fusible Link A
(see schematic).
. 2. Replace Ignition Switch.
B: S T A R T E R S O L E N O I D C L I C K S , B U T
ENGINE D O E S NOT C R A N K OR
C R A N K S S L O W L Y ( T A B L E 1)
Measure:
VOLTAGE
At: BATTERY TERMINALS
Conditions:
• Battery: FULLY CHARGED
• ECM IGN Fuse: REMOVED
• Ignition Switch: START
• Engine: BEING CRANKED
Measure
Between
Correct
Voltage
For
Diagnosis
Positive &
negative
Battery
terminals
Greater than
9.5 volts
See 1
• If voltage is correct, go to Table 2.
1. Refer to Section 6D for Battery Load
Test. If Battery is OK, remove Starter
Assembly for repairs.
B: STARTER SOLENOID C L I C K S , BUT
ENGINE D O E S NOT CRANK OR
C R A N K S SLOWLY (TABLE 2)
Measure: VOLTAGE
At: BATTERY CABLES
Conditions:
• Battery: FULLY CHARGED
• ECM IGN Fuse: REMOVED
» Ignition Switch: START
• Engine: BEING CRANKED
(Continued on next column)
(Continued from previous column)
Measure
Between
Correct
Voltage
For
Diagnosis
Negative
battery
terminal &
engine block
Less than .5
volts
See 1
Positive
battery
terminal &
Starter
Solenoid,
terminal B
Less than .5
volts
See
2
© If both voltages are correct, remove Starter
Assembly for repairs. Refer to section 6D
for removal procedures.
1. Replace negative Battery cable.
2. Replace positive Battery cable.
SYSTEM DIAGNOSIS
CHARGING
® Diagnostic steps for the
symptoms listed in
the following table are listed after the table.
SYMPTOM TABLE
A: Charge Indicator does not light with the
Ignition Switch in RUN and engine
stopped. (L4 VIN R ONLY)
B: Charge Indicator stays on when engine is
running (L4 VIN R ONLY)
0: Battery is undercharged or overcharged