Honda ACCORD HYBRID 2005 Service Manual page 1994

Audio System
S y m p t o m T r o u b l e s h o o t i n g (cont'd)
Radio preset memory is lost
1. Set each of the radio station preset buttons.
Do each of the preset buttons set properly?
Y E S — G o t o step 2.
NO—Replace the audio-HVAC display module
(see page 23-69). •
2. Turn the ignition switch OFF for 1 minute, then t u r n
it back to ON (II).
3. Test all the preset buttons for proper recall
operation.
Do the preset buttons recall the set radio stations?
YES—System is normal at this t i m e . Check
connections at the audio u n i t . B
NO—Go to step 4.
4. Inspect the under-dash fuse/relay box No. 5 (10 A)
fuse.
Is it OK?
Y E S — G o t o step 5.
NO—Replace the fuse and reset. If it fails again,
repair the short to g r o u n d in the harness. •
5. Remove the audio-HVAC display m o d u l e (see page
22-69).
6. Turn the ignition switch ON (II).
7. Measure voltage between the audio unit connector
A (20P) terminal No. 10 and body g r o u n d .
AUDIO UNIT C O N N E C T O R A (20P)
PNK
n n
_ >
n n
1 2 3 4 5 6 7 8 9 10
11 12 13 15 16 17 18 19 20
W i r e side of f e m a l e t e r m i n a l s
Is there battery voltage?
Y E S — G o t o step 8.
NO—An open w i r e between the under-dash fuse/
relay box and audio unit A10 terminal. •
8. Check for continuity between the audio unit
connector A (20P) terminal No. 20 and body g r o u n d .
AUDIO UNIT C O N N E C T O R A (20P)
n n
_>
n n
1 2 3
4
5 6 7 8 9 10
11 12 13
A
15 16 17 18 19 20
BLK
Wire side of f e m a l e t e r m i n a l s
Is there continuity?
YES—Replace the audio-HVAC display module.
NO—An open wire between the audio unit A20
terminal and body g r o u n d (G504).H
23-28