Cruise Control Unit Lndut Test - Honda Civic Service Manual

Cruise Gontrol
Cruise Control Unit Input Test
SRS components are located in this area. Reviewthe SRS component locations (see page 23-'13) and precautions and
procedures (see page 23-14) in the SRS section before performing repairs or service.
1. Disconnect the 14P connector from the control unit.
2. Inspect the connector and socket terminals to be sure they are all making good contact.
. lf the terminals are bent, loose, orcorroded, repairthem as necessary, and recheckthe system.
. lf the terminals look OK, go to step 3.
Wire side of
female terminals
3. With the 14P connector disconnected, make these inDut tests.
Cavity
Wire
Test condition Test: Desired result
Possiblecause ifresuh is not obtained
BRN/WHT
Connect battery
power
Check the operation of the
magnetic clutch: Clutch
s h o u l d c l i c k a n d o u t p u t l i n k
should be locked.
' Faulty actuator
. P o o r g r o u n d ( G 3 0 1 )
. An open in the wire
. Shon to ground (arcs when
Dower is connected)
2 BLU
lgnition switch ON
(ll), main swltch ON
and brake pedal
pressed, then
reteaseo
Check for voltage to ground;
There should be 0 V with lhe
pedal pressed and battery
voltage with the pedal
released.
. Faulty brake pedal position
switch
. A n o p e n i n t h e w i r e
. Open in cruise control main
swrtcn
. B l o w n N o . 4 ( 1 0 A ) f u s e i n t h e
under/dash fuse/relav box
3 BLK
U n d e r a l l c o n d i t i o n s Check for continuity to
g r o u n o :
There should be continuitv
. P o o r g r o u n d ( G 5 0 1 )
. An open in the wire
BLIVORN
l g n i t i o n s w i t c h O N
flr)
Check for voltage to ground:
There should be battery
vottaqe.
B l o w n N o . 4 ( 1 0 A ) f u s e i n t h e
under-dash f use/relay box
An oDen in the wire
5
WHT/BLK Brake pedal pressed,
then released
Check for voltage to ground:
There should be battery
voltage with the pedal
pressed, and 0 V with the
pedal released.
B l o w n N o . 7 { 1 5 A ) f u s e i n t h e
under-hood fuse/relay box
Faulty brake pedal position
SWIICN
A n o D e n i n t h e w i r e
4-40