Honda Accord: Navigation Communication Line Circuit
Troubleshooting
1. Operate the climate control system in several modes.
Is the climate control system OK? YES-
Go to step 2.
NO
-Do the self-diagnostic function with the HDS (see page 21-102) or climate control unit (see page 21-103).
2. Do the Navi system links (see page 23-176).
Is the Air-Con or TALK/BACK icon red? Y E S
- • If Air-con icon is red, go to step 3.
• If TALK/BACK icon is red, go to "voice control does not work/respond" in the navigation system symptom troubleshooting (see page 23-226).
NO
-Go to step 9.
3. Turn the ignition switch to LOCK (0).
4. Disconnect navigation unit connector B (32P).
5. Disconnect climate control unit connector B (12P).
6. Check for continuity between the following terminals of climate control unit connector B (12P) and navigation unit connector B (32P).
12P: 32P:
No. 7 No. 20
No. 8 No. 4
No. 9 No. 21
CLIMATE CONTROL UNIT CONNECTOR B (12P)
Wire side of female terminals
NAVIGATION UNIT CONNECTOR B (32P)
Wire side of female terminals
Is there continuity? YES
-Go to step 7.
NO
-Repair an open in the wire(s) between the climate control unit and the navigation u n i t.
7. Check for continuity between body ground and climate control unit connector B (12P) terminals No. 7, 8, and No. 9 individually.
CLIMATE CONTROL UNIT CONNECTOR B (12P)
Wire side of female terminals
is there continuity? YES
-Repair a short to body ground in the wire(s) between the climate control unit and the navigation unit.
NO
-Go to step 8.
8. Reconnect climate control unit connector B (12P).
9. Disconnect navigation unit connector B (32P).
10. Connect navigation unit connector B (32P) terminals No. 4, 20, and No. 21 with jumper wires.
NAVIGATION UNIT CONNECTOR B (32P)
Wire side of female terminals
11. Turn the ignition switch to ON (II).
12. Press and hold the AUTO button, then press and hold the OFF button.
Is the HEAT/VENT indicator solid with the remaining icons blinking? YES
-Do the Unit check with the navigation system (see page 23-182).
NO
-Substitute a known-good climate control unit, and recheck. If the symptom goes away, replace the original climate control unit (see page 2 1 - 1 9 0 ).
Climate Control Power and Ground
Circuit Troubleshooting
1. Check the No. 16 (7.5 A) fuse in the driver's
under-dash fuse/ relay box.
is the fuse OK?
YES-Go to step 2.
NO-Replace the fuse, and recheck. If the fuse blows
again, check for a short in ...
Audio Communication Line Circuit
Troubleshooting
1. Turn the ignition switch to LOCK (0).
2. Disconnect climate control unit connector A (28P) and
the audio-HVAC subdisplay (with navigation) or
audio-HVAC display unit (without navigation) 12P
...
See also:
Reporting Safety Defects
In the US
If you believe that your vehicle has a defect which
could cause a crash or could cause injury or death, you
should immediately inform the National Highway
Traffic Safety Administratio ...
Instrument Panel
Instrument Panel
The instrument panel has many
indicators to give you important
information about your vehicle.
Seat Belt Reminder
Indicator
This indicator comes on when you
turn the ig ...
Frame Brace Replacement
Strut Brace Replacement
1. Remove the cowl cover (see page 20-278).
2. Disconnect the brake booster vacuum hose (A) from
the strut brace (B).
3. Remove the nuts from the top of the damper, and ...