Honda ACCORD HYBRID 2005 Service Manual page 2092

Navigation System
S y m p t o m T r o u b l e s h o o t i n g
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Diagnostic Test: Navi System Link
NOTE: A l w a y s check the connectors for poor
connections or loose terminals.
1. Check the No. 7 (10 A) fuse and No. 32 (7.5 A) fuse
in the under-dash fuse/relay box, and reinstall the
fuse if it is OK.
Is the fuse OK ?
Y E S — G o t o step 2.
NO—Replace the fuse and recheck. •
2. Turn the ignition switch to ACC (I).
3. Operate the radio and listen to the audio.
Can audio be heard?
Y E S — G o t o step 4.
NO—Check the ACC circuit. •
4. Turn the ignition switch OFF.
5. Remove the navigation unit (see page 23-145).
6. Disconnect navigation unit connector C (8P) f r o m
the navigation unit (see page 23-103).
7. Turn the ignition switch ON (II).
Measure the voltage between body ground and
navigation unit connector C (8P) terminals No. 1
and No. 2 individually.
NAVIGATION UNIT CONNECTOR C (8P)
+ B (WHT) ACC (YEL)
1
2
/
4
5 6
7
8
Wire side of female terminals
Is there battery voltage?
Y E S — G o t o step 9.
NO—If the + B w i r e does not have voltage, repair
open in the w i r e between the under-dash fuse/relay
box and the navigation unit.
If the ACC w i r e does not have voltage, repair open
in the w i r e between the under-dash fuse/relay box
and the navigation unit. •
9. Turn the ignition switch OFF.
10. Check for continuity between navigation unit
connector C (8P) terminal No. 4 and body g r o u n d .
NAVIGATION UNIT C O N N E C T O R C (8P)
GND (BLK)
1 2
4
5 6
7
8
Wire side of f e m a l e t e r m i n a l s
Is there continuity?
Y E S — G o t o step 11.
NO—Repair open in the w i r e between the
navigation unit and body g r o u n d (G506). •
23-126