Honda Civic Service Manual page 1731

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Control Unit Input Test ('99 - 00 models with Keyless Entry System)
1 . Remove the driver's kick panel.
Disconnect the 18P connector from the control unit.
Inspect the connector and socket terminals to be sure they are all making good contacl.
. lf the terminals are bent, loose or corroded, repair them as necessary, and recheck the system
. lf the terminals look OK, make rhe following input tests at the connector.
- lf anv test indicates a problem, find and correct the cause, then recheck ihe system
-
lf all the input tests prove OK, the control unit must be faulty; replace it
Wire side oI female terminals
Disconnect the 18P connector from the power door lock control unit.
CAUTION: To provent damage to the actuator, apply battery Yoltage only momentarily.
Cavity Wir€
Test condition
Test: Desired result
Possible cause if result is not obtained
BLK/YEL
RED/SLK
2
5 6 1 8
9 1 0 / , ' 2
, /
' 1 5
1 7 1 8
LT WHT
1 7
BLK
U n d e r a l l c o n d i t i o n s
Check for contlnuity to ground:
There should be continuity.
. P o o r g r o u n d ( G 5 5 1 )
. A n o p e n i n t h e w i r e
t 8
WHT/GRN
Under all conditions
Check tor voltage to ground:
There should be battery voltage.
. Blown No. 5'1 (20 A) luse in the
under-hood tuse/relay box
. An open in the wire
4
B LK/YEL
lgnition switch ON (ll) check for voltage to ground:
There should be battery voltage.
Blown No. l4 (7.5 A) fuse in the
under-dash fuse/relay box
An open in the wire
(cont'd)
23-259
l - r