Pontiac Fiero 1988 Service Manual page 1035

B R A K E WARNING S Y S T E M [
1
(Continued from previous page)
A: BRAKE WARNING INDICATOR
REMAINS ON WITH THE IGNITION
SWITCH IN RUN AND THE PARK
BRAKE OFF ( T A B L E D
(Continued from previous column)
Separate: CONNECTOR
At: BRAKE FLUID LEVEL SWITCH
Conditions:
• Ignition Switch: RUN
• Park Brake: OFF
Action Correct Result For Diagnosis
Disconnect
Brake Fluid
Level Switch
Connector
BRAKE
Warning
Indicator does
not light
Seel
If resultis correct, refer to Section 5 of the
Chassis Service Manual to test the Brake
Hydraulic System. Replace the Brake
Fluid Level Switch if the Brake Hydraulic
System is OK.
Go to Table 2.
A: BRAKE WARNING INDICATOR
REMAINS ON WITH THE IGNITION
SWITCH IN RUN AND THE PARK
BRAKE OFF (TABLE 2)
Separate: CONNECTOR
At: PARK BRAKE SWITCH
Condition:
• Ignition Switch: RUN
(Continued in next column)
Action Correct Result For Diagnosis
Disconnect
Park Brake
Switch
Connector
BRAKE
Warning
Indicator does
not light, Park
Brake warning
does not sound
Seel
• If result is correct, replace the Park Brake
Switch.
1. Go to Table 3.
B R A K E W A R N I N G INDICATOR
R E M A I N S O N W I T H T H E IGNITION
S W I T C H IN R U N A N D T H E P A R K
B R A K E O F F ( T A B L E 3)
Measure: RESISTANCE
At: IGNITION SWITCH CONNECTOR
Condition:
• Ignition Switch: RUN
Connect
Between
Correct Result For Diagnosis
G2 & terminal
ground
Infinite Ohms Seel
• If result is correct, check/repair TAN/WHT
(33) wires and Instrument Cluster (Printed
Circuit) for shorts to ground.
1. Replace the Ignition Switch.
B: B R A K E W A R N I N G INDICATOR
D O E S N O T U G H T A T A L L
Remove the Brake Fluid Level Switch Con-
nector and connect a fused jumper from the
center terminal to ground. Turn the Ignition
Switch to RUN.
• If the BRAKE Warning Indicator lights,
perform tests for Symptoms C and D.
• If the BRAKE Warning Indicator does not
light, check/repair the Indicator bulb,
PNK/BLK (39), TAN/WHT (33) wires and
the Instrument Cluster (Printed Circuit)
for opens.
C: BRAKE WARNING INDICATOR
DOES NOT LIGHT WITH THE PARK
BRAKE APPLIED
Connect:
FUSED JBJIMPErJ
At: PARK BRAKE SWITCH CONNECTOR
(Disconnected)
Condition:
o Ignition
Switch: RUN
Connect
Between
Correct Result For Diagnosis
Park Brake
Switch
Connector &
Ground
BRAKE
Warning
Indicator
lights, Park
Brake warning
sounds
Seel
• If BRAKE Warning Indicator lights,
replace the Park Brake Switch.
1. Check/repair TAN/WHT (33) and PPL
(209) wires for an open (see schematic).