Honda ACCORD HYBRID 2005 Service Manual page 2102

Navigation System
S y m p t o m T r o u b l e s h o o t i n g ( c o n t ' d )
1. Go into the Diagnostic M a n u and use the " M i c
L e v e l " test the under Functional Setup (see page
23-118) t o check the operation of the TALK and
BACK buttons.
Are the TALK and BACK buttons operational?
Y E S — G o t o step 2.
NO—Check for an open or short to g r o u n d on
navigation unit connector B (14P) terminal No. 10
(see page 23-97). •
2. Use the " M i c L e v e l " diagnostic under Functional
Setup (see page 23-118) t o check the operation of
the microphone.
Is the microphone operational?
Y E S — C h e c k the operation of the voice control
system (see the Navigation System o w n e r ' s
m a n u a l ) . *
NO—Check for a loose front m a p light
(microphone) assembly. If OK, check for an open or
short to ground on navigation unit connector B
(14P) terminals No. 6 and No. 14 (see page 23-103).
Vehicle position icon constantly leaves road,
moves erratically, or is very far f r o m actual
position
1. Check the GPS icon on the navigation picture.
Is the GPS icon white?
Y E S — D o the troubleshooting for GPS icon does not
indicate (see page 23-133). •
N O — G o t o step 2.
2. Go into the Diagnostic M e n u and use the " Y a w
Rate" test (see page 23-117) t o check the y a w rate
sensor.
3. Go into the Diagnostic M e n u and use the "Car
S t a t u s " test (see page 23-115) to check the vehicle
speed pulse.
Are the yaw rate sensor and vehicle speed pulse
OK?
Y E S — T h e p r o b l e m m a y be n o r m a l . Check to see if
the p r o b l e m occurs in the same driving location. If
it does, the p r o b l e m could be in t h e database. Go to
step 4.
NO—If the p r o b l e m is the y a w rate sensor, replace
the navigation unit (see page 23-145). If the
p r o b l e m is the vehicle speed pulse, troubleshoot
the vehicle speed signal circuit (see page 2 3 - 9 8 ) . •
4. Substitute a k n o w n - g o o d navigation unit (see page
23-145) and check to see if the p r o b l e m occurs in
the same driving location.
Does the problem occur in the same driving
location?
Y E S — T h e problem is in the database. Report the
p r o b l e m according to the Navigation System
o w n e r ' s manual under " R e p o r t i n g E r r o r s . " •
NO—Replace the original navigation unit (see page
2 3 - 1 4 5 ) . •
23-136