Cruise Control Symptom Troubleshooting Index - Honda Civic 2002-2003 Service Manual

Cruise Control
Symptom Troubleshooting Index
NOTE:
• The numbers in the table show the troubleshooting sequence .
• Belore troubleshooting.
- check the No. 10 (7.5A) and No.4 (lOA) luses in the under-dash luse/relay box, and the No.7 (15A) luse in the
under-hood luse/relay box.
- check that the horn sounds.
- check the tachometerto see il it works properly.
- check the speedometer to see il it works properly.
Symptom
I
Diagnostic procedure
Cruise control cannot be
1. Check main switch (see page 4-42)
set 2.
Check SET/RESUME/CANCEL switch (see page 4-42)
3. Test brake pedal position switch (see page 22-84) and check
its adjustment (see page 19-6)
4. Test clutch pedal position switch (see page 4-45) and check
its adjustment (see page 12-4)
5.
Check cruise control unit (see page 4-40)
6.
Check vehicle speed sensor (VSS) (see page 22-65)
Cruise control can be set 1. Check cruise control indicator bulb in gauge assembly (see
but indicator light does page 22-63)
not go on 2.
Check cruise control unit (see page 4-40)
Cruise speed is
1. Check vehicle speed sensor (VSS) (see page 22-65)
noticeably higher or Check cruise control actuator (see page 4-43)
lower than what was set 2.
Check cruise control unit (see page 4-40)
3.
Excessive overshooting 1. Check cruise control actuator (see page 4-43)
or undershooting when
2. Check vehicle speed sensor (VSS) (see page 22-65)
trying to set speed Check cruise control unit (see page 4-40)
3.
Speed fluctuation on a
1. Check vehicle speed sensor (VSS) (see page 22-65)
Ilat road with cruise
Check cruise control actuator (see page 4-43)
control set 2. Check cruise control unit (see page 4-40)
3.
Vehicle does not 1. Check SET/RESUME/CANCEL switch (see page 4-42)
decelerate or accelerate 2. Check cruise control unit (see page 4-40)
accordingly when SET/
RESUME/CANCEL bunon
is pushed
Set speed does not 1.
Test clutch pedal position switch (see page 4-45) and check
cancel (engine rpm stays
its adjustment (see page 12-4)
high) when clutch pedal 2. Check cruise control unit (see page 4-40)
~_Shed
-
Set speed does not 1.
Test brake pedal position switch (see page 22-84) and check
cancel when brake pedal
its adjustment (see page 19-6)
is pushed 2. Check cruise control unit (see page 4-40)
4-38
Also check for
• Poor ground:
G501
• Open circuit,
loose or
disconnected
terminals:
LTGRN,
BLK/ORN,
GRY/RED, BLU,
LT BLU,
BLU/WHT
• Poor ground:
G501
• Open circuit,
loose or
disconnected
terminals:
YEL, BLU/yEL
Open circuit, loose
or disconnected
terminals:
GRY/RED,
LT GRN/BLK
Short to ground in
the L T BLU wire
--
Open circuit, loose
or disconnected
terminals:
WHT/BLK