Pontiac Fiero 1988 Service Manual page 1015

CRUISE
CONTROL . L_
V6 VIN 9 AND L 4 V I N R
(Continued from previous page)
N: SPS CIRCUIT SHORT TEST
Disconnect the Cruise Control Servo connector.
Repeat Test 7 of the Isolation Test.
• If the resistance is now over range, replace
the Cruise Control Servo.
• If the resistance is still low, find and repair
the short in the wire from terminal F of the
Cruise Control Module to terminal B of the
Cruise Control Servo.
O: CRUISE MODULE TEST
1. Check the resistance between G202 and
G504.
• If it is more than 0.1 ohm, clean and tighten
both grounds and the negative battery
cable. In cases where the ground circuit is
suspect, add a ground strap between the
engine block and the bulkhead.
• If it is less than 0.1 ohm, connect a new
Cruise Control Module and check for normal
operation.
S Y S T E M DIAGNOSIS
L4V1NR
Note: If any diagnostic codes are set, refer to
Section 6E.
• If the Cruise Control does not work, follow
Test A (if you are using a Scan Tool) or Test
B (if you are using a Digital Voltmeter).