STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
D. CHART 12 · CRUISE CONTROL INOPERATIVE (Cont'd)
C 12-5
Check for Short at the
Cruise Enable Circuit
Turn ignition on.
Less than or equal
Reconnect the vehicle harness.
Turn cruise engage switch to off.
to 10,000 ohms.
Turn ignition on. Then run
Disconnect the vehicle harness
steps of Table II and III. If any
connector at the ECM.
DDR display received is not
Read Resistance between the cruise
OK, go to the step indicated. If
engage cavity (i.e. F2) on the vehicle
Table II and III pass, then the
harness connector and a good
cruz engage wire is shorted to
ground.
ground. Repair short, or replace
switch, then go to C12-30.
Greater than
Go to C12-2.
10,000 ohms.
C 12-6
Check for Open at the
Cruise Enable Circuit
Turn ignition off.
Greater than 5 ohms
Either the cruise engage switch
Disconnect the vehicle harness
or open.
is bad. Ckt #953 is open, cruise
connector at the ECM.
enable wire is open, or you have
Turn on the cruise enable switch.
a bad battery ground. Repair
Read resistance between the
open, or replace switch.
cruise enable cavity (i.e. F2) on the
Then go to C12-30.
vehicle harness connector and a
good ground.
Less than, or equal to
Go to C12-2.
5 ohms.
C 12.7
Check for Open or
Miswired Brake
Switch
Turn ignition off.
Greater than 5 ohms
Either the Brake Switch Is
Disconnect the vehicle harness
or open.
miswired or faulty, Ckt# 953
connector at the ECM.
is open, or you have a bad
Ensure the service brake is not
ground. Rewire/repair. Then
engaged.
go to C12-30.
Read resistance between the
Less than or equal to
Go to C12-2.
service brake cavity (i.e. G2) on the
to 5 ohms.
vehicle harness connector and
a good ground.
Change 3 3-345.133