Pontiac Fiero 1988 Service Manual page 1000

C O O L A N T FAN
n
V6 VIN 9
(Continued from previous page)
"1 1
° If the results are correct, replace the
Coolant Temperature Switch.
1. Perform Test C.
B: COOLANT FAN AND ENGINE
BLOWER DO NOT RUN WITH A/C
ON
Connect: FUSED JUMPER
A t : A/C CONTROL HEAD CONNECTOR
(Disconnected)
Condition:
• Ignition Switch: RUN
Jumper
Between
Correct Result For Diagnosis
K (DK GRN/
WHT) &
Ground
Coolant Fan
and Engine
Blower run
Seel
K (DK GRN/
WHT) & H
(BLK)
Coolant Fan
and Engine
Blower run
See 2
• If the results are correct, replace the A/C
Control Head.
1. Perform Test C.
2. Check BLK (150) wire for an open.
C: COOLANT FAP
ALL (TABLE 1)
DOES NOT RUN AT
Connect: FUSE JUMPER
At: COOLANT FAN RblAY CONNECTOR
(Connected)
Condition:
• Ignition Switch: RUN
Jumper
Between
Correct Result For Diagnosis
F
( D K
GRN/
WHT)&
Ground
Coolant Fan
runs
Seel
• If result is correct, check/repair the DK
GRN/WHT wire for an open.
1. Go to Table 2.
C: COOLANT FAN DOES NOT RUN AT
ALL (TABLE 2)
Connect: T E S T LAMP
At: COOLANT FAN RELAY CONNECTOR
(Disconnected)
Condition:
• Ignition Switch: RUN
Connect
Between
Correct Result For Diagnosis
D (BRN/WHT)
& Ground
Test Lamp
lights
Seel
A (RED) &
Ground
Test Lamp
lights
See
2
• If the results are correct, go to Table 3.
1. Check the FAN E Fuse and BRN/WHT
(250) wire for an open.
2. Check Fusible Link A and RED (2) wire
for an open.
C: COOLANT FAN DOES NOT RUN AT
Connect: 20 AMP FUSED JUMPER
At: COOLANT FAN RELAY CONNECTOR
(Disconnected)
Jumper
Between
Correct Result For Diagnosis
D (RED) & A
(BLK/RED)
(see schematic)
Coolant Fan
runs
Seel
• If the Coolant Fan runs
Coolant Fan Relay.
, replace the
1. Leave fused jumper in place and go to
Table 4.
C: COOLANT FAN DOES NOT RUN AT
ALL (TABLE 4)
Connect: TEST LAMP
At: COOLANT FAN MOTOR CONNECTOR
(Disconnected)
Condition:
•
Fused jumper from Table 3 in place
Connect
Between
Correct Result For Diagnosis
B (BLK/RED)
& Ground
Test Lamp
lights
Seel
B (BLK/RED)
& A (BLK)
Test Lamp
lights
See
2
• If the results are correct, replace the
Coolant Fan Motor.
If Check BLK/RED (532) wire for an open.
2. Check BLK (151) wire for an open.
2
m
o
Oil
(Continued on next page)