Honda Accord 2008 Manual page 2016

07/11/02 09:44:36 61TA0000_210_0152
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 or display unit 12P
connector.
3. Check for continuity between the following
terminals of climate control unit connector A (28P)
and the audio-HVAC subdisplay or display unit 12P
connector.
28P:
No. 19
No. 20
＊０１
CLIMATE CONTROL UNIT CONNECTOR A (28P)
AUDIO-HVAC SUBDISPLAY UNIT 12P CONNECTOR*1
AUDIO-HVAC DISPLAY UNIT 12P CONNECTOR*2
*1: With navigation
*2: Without navigation
Is there continuity?
YES
−
NO
control unit connector A (28P) and the audio-HVAC
subdisplay or display unit 12P connector.
12P:
No. 7
No. 8
Wire side of female terminals
1 1
LT BLU* BLU *
2 2
RED* PUR *
PUR
RED
Wire side of female terminals
− Go to step 4.
Repair open in the wire between climate
4. Check for continuity between body ground and
climate control unit connector A (28P) No. 19 and
No. 20 terminals individually.
CLIMATE CONTROL UNIT CONNECTOR A (28P)
1 BLU* 1
LT BLU*
2 2
RED* PUR*
Wire side of female terminals
*1: With navigation
*2: Without navigation
Is there continuity?
YES − Repair short to body ground in the wire
between climate control unit connector A (28P) and
the audio-HVAC control unit 12P connector.
NO − Go to step 5.
5. Reconnect climate control unit connector A (28P).
6. Connect the audio-HVAC subdisplay or display unit
12P connector No. 7 and No. 8 terminals with a
jumper wire.
AUDIO-HVAC SUBDISPLAY UNIT 12P CONNECTOR*1
AUDIO-HVAC DISPLAY UNIT 12P CONNECTOR*2
RED PUR
JUMPER WIRE
Wire side of female terminals
*1: With navigation
*2: Without navigation
7. Turn the ignition switch to ON (II).
8. Press and hold the DEF button and OFF button.
Is the DEF button LED blinking?
YES − Audio-HVAC subdisplay unit or display unit
is faulty, replace the audio-HVAC subdisplay unit
(see page 23-114) or audio-HVAC display unit
(see page 23-114).
−
NO Climate control unit is faulty, replace the
climate control unit (see page 21-164).
ＴＡ０８ＡＨ７Ｇ１０５０００１６６６１ＦＡＡＴ００
＊０２
＊０３
21-151