Honda ACCORD HYBRID 2005 Service Manual page 949

Measure the voltage between PCM connector
terminals A12 and A3 or D16.
PCM C O N N E C T O R S
LG1 (BRN/YEL)
A(31P) D(17P)
1 2
/
4 5 6
/
8 9 10 11 12
13 14 r 15 16 17
L G 2 (BRN)
VCC1
( Y E L / 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 about 5 V?
YES—Repair an open in the w i r e between PCM
connector terminal A12 and the output shaft
(countershaft) speed sensor, then go to step 3 1 .
N O — G o t o step 26.
26. Turn the ignition switch OFF.
27. J u m p the SCS line w i t h the HDS.
28. Disconnect PCM connector C (22P).
29. Check for continuity between PCM connector
terminal A12 and body g r o u n d .
PCM C O N N E C T O R A (31P)
VCC1 ( Y E L / R E D )
1 | 2 | 3 | 4 | 5 6 | 7
11 11
8 | 9
10 11 12 13 14 15 16 17 18 19 20 21
/
23 4
n
25 26
n
27 28 29 30 31
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 a short in the w i r e between PCM
connector terminal A12 and the output shaft
(countershaft) speed sensor, then go to step 3 1 .
NO—Check for loose or poor connections at PCM
connector terminal A12. If the connection is OK,
update the PCM if it does not have the latest
software, or substitute a k n o w n - g o o d PCM
(see page 14-7), then recheck. If the s y m p t o m /
indication goes away w i t h a k n o w n - g o o d PCM,
replace the original PCM. •
(cont'd)
14-113