Honda ACCORD HYBRID 2005 Service Manual page 2026

Audio System
A c t i v e N o i s e C o n t r o l S y s t e m T r o u b l e s h o o t i n g (cont'd)
45. Start the engine, and let it idle.
46. Perform the Self-diagnostic Procedure (see page
23-19).
47. Press the SCAN button (with navigation) or the
" N o . 1 " button (without navigation).
Is the low-frequency hum heard?
YES—Go to step 48.
NO—The system is O K . B
48. Turn the ignition switch OFF.
49. Disconnect the active noise control unit 16 P
connector and PCM connector A (31P).
50. Check for continuity between the active noise
control unit 16P connector No. 15 terminal and PCM
connector A (31 P) No. 23 t e r m i n a l .
ACTIVE NOISE C O N T R O L UNIT 16P C O N N E C T O R
Wire side of f e m a l e t e r m i n a l s
i —
r
1 2
3
4 5
/
8
9 10 11 12
/
14 15 16
B L U / R E D
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 27
/ 29
/
31
I B L U / R E D
PCM C O N N E C T O R A (31P)
Wire side of f e m a l e t e r m i n a l s
Is there continuity?
YES — G o to step 5 1 .
NO—Repair an open in the w i r e between the active
noise control unit 16P connector No. 15 terminal
and the PCM connector A (31P) No. 23 t e r m i n a l . •
51. Check for continuity between the active noise
control unit 16P connector No. 15 terminal and
body g r o u n d .
ACTIVE NOISE C O N T R O L UNIT 16P CONNECTOR
i
r
1 2 3 4
5
7
8
9
10 11 12 14 15 16
B L U / R E D
W i r e side of f e m a l e t e r m i n a l s
Is there continuity?
YES—Repair short to g r o u n d in the w i r e between
body g r o u n d and the active noise control unit 16P
connector and PCM connector A (31P) No. 23
t e r m i n a l . •
NO — F a u l t y the P C M . B
23-60