Honda Prelude 1993 Service Manual page 1271

Back-up Lights
Switch
Test
Manual Transmission:
1. Turn the ignition switch ON and move the shift
lever to LBJ. The back-up lights should come on.
It a back-up light does not go on, check for:
- Blown bulb in the taillight assembly.
lf both back-up lights do not go on. check tor:
- Blown No. 13 (10 A) fuse in the under-dash
fuse/relay box.
lf the fuse and bulbs are OK, go to step 2.
Disconnect the connectors trom the back-up light
switch,
A (YELI
swtTcH
25
.m {2.5 kg-m,
1E rb-ftl
This washer must
always be r€placed
for the switch to
lunction properly
and to prevent oil
reaKs.
Check for continuity between the A and B
terminals.
a There should be continuity only with the shilt
lever in @.
a lf there is no continuity, replace the switch (see
s e c t i o n 1 3 ) .
a lf there is continuity. but the back-up lights do
not go on. check for:
- An open in the YEL or GRN/BLK wire.
- P o o r g r o u n d ( G 5 5 1 ) .
Automatic Tmnsmission:
1. Turn the ignition switch on and move the shitt lever
to LB-1. The back-up lights should come on.
lf a back-up light does not go on, check for:
- Blown bulb in the taillight assembly.
lf both back-up lights do not go on. check for:
- Blown No. 13 (1O A) fuse in the under-dash
fuse/.elay box.
It the fuse and bulbs are OK, go to step 2.
2 .
Disconnect the
'12-P
connector from the A/T gear
position switch (back-up light switch).
Move the shiit lever back and lorth in E without
touching the push button, and check for continuity
between No. 9 and No. 1O terminals.
There should be continuity within the range of tree
play of the shift lever.
a lf there is no continuity within the range of free
play, adjust the position of the A/T gear position
s w i t c h ( s e e p a g e 2 3 - 1 4 9 ) .
a l{ there is continuity, but the back-up lights do
not go on, check tor:
- An open in the YEL or GRN/BLK wire.
P o o r g r o u n d ( G 5 5 1 ) .
View trom wire side
23-1 93