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Cruise Control
Symptom Troubleshooting Index
NOTE:
• The numbers in the table show the troubleshooting sequence.
• Before troubleshooting.
– check that the speedometer works properly.
– check the No. 9 (10A) and No. 6 (15A) fuses in the driver's under-dash fuse/relay box, and No. 47 (20A) fuse in the
under-hood fuse/relay box.
– check that the horn sounds.
Symptom
Cruise control cannot be set
Cruise control can be set, but
cruise control indicator does
not come on
Cruise speed is noticeably
higher or lower than what
was set
Excessive overshooting or
undershooting when trying to
set speed
Speed fluctuates on a flat
road with cruise control set
Vehicle does not decelerate
or accelerate accordingly
when SET/RESUME/CANCEL
button is pressed
Set speed does not cancel
(engine rpm stays high) when
shift lever is moved to neutral
position
Set speed does not cancel
when brake pedal is pressed
4-44
Diagnostic procedure
1.
Check main switch
•
1999-2001 models (see page 4-50)
•
2002-2004 models (see page 4-50)
2.
Check SET/RESUME/CANCEL switch (see page 4-51)
3.
Check brake pedal position switch and mounting (see
page 4-51)
4.
Check transmission range switch:
•
1999-2001 models (see page 14-173)
•
2002-2004 models (see page 14-403)
5.
Check cruise control unit inputs (see page 4-48)
6.
Check cruise control actuator
1.
Blown cruise control indicator bulb
2.
Check dimming circuit in gauge (see page 22-96)
3.
Check cruise control unit inputs (see page 4-48)
Check cruise control unit inputs (see page 4-48)
1.
Check cruise control unit inputs (see page 4-48)
2.
Check cable for free operation
Check cruise control unit inputs (see page 4-48)
1.
Check SET/RESUME/CANCEL switch (see page 4-51)
2.
Check cruise control unit inputs (see page 4-48)
3.
Check cable for free operation
4.
Check cruise control actuator
1.
Check transmission range switch:
•
1999-2001 models (see page 14-173)
•
2002-2004 models (see page 14-403)
2.
Check cruise control unit inputs (see page 4-48)
1.
Check brake pedal position switch and mounting (see
page 4-51)
2.
Check cruise control unit inputs (see page 4-48)
Also check for
•
Poor ground: G101,
G501
•
Open circuit, loose
or disconnected
terminals: BLK/YEL
LT GRN, LT GRN/
RED, GRY, LT BLU,
BLU/WHT, BLK,
Cable reel
•
Poor ground: G501
•
Open circuit, loose
or disconnected
terminals: YEL,
BLU/BLK
Open circuit, loose or
disconnected
terminals:
LT GRN/RED, LT
GRN/BLK
Open circuit, loose or
disconnected
terminals, short to
ground: LT BLU
Open circuit, loose or
disconnected
terminals: WHT/BLK
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