Honda 2004 Odyssey Service Manual page 2049

Navigation System
Symptom Troubleshooting (cont'd)
Audio driving instructions cannot be heard
NOTE:
• Always check the connectors for poor connections or
loose terminals.
• Before troubleshooting, write down the customer's
radio station presets, and get the radio and
navigation system anti-theft codes.
• After troubleshooting, enter the radio and navigation
system anti-theft codes, and the radio station presets.
1. Start the engine.
2. Perform the Car Status test under ''Unit Check'' in
the System Diagnosis Menu (see page 22-376).
Is there vehicle speed pulse signal?
YES Replace the navigation unit.
NO Go to step 5.
3. Push the display unit MENU key, and select ''set-
up''.
4. Check the audio driving instructions volume setting.
Is it set to OF F ?
YES Set the volume to an audible level.
NO Go to step 7.
5. Turn the ignition switch OFF.
6. Disconnect the navigation unit connector B (16P)
and the audio unit 20P connectors.
22-370
7. Check for continuity between body ground and
navigation unit connector B (16P) terminals No. 1,
No. 3, No. 9, and No. 10 individually.
NAVIGATION UNIT CONNECTOR B (20P)
RG R (BLU/GRN) MUTE(WHT/BLK)
RG
L
(ORN/
BLU)
Wire side of female terminals
Is there continuity?
YES If terminal No. 3 has continuity to ground,
repair the short to body ground in the WHT/BLK
wire. If terminal No. 1, No. 9, or No. 10 have
continuity to ground, repair the affected shielded
harness.
NO Go to step 8.
GND RG (ORN)