Honda ACCORD HYBRID 2005 Service Manual page 799

DTC P1634 (47): Motor Power Inverter (MPI)
Module Signal Circuit Malfunction
1. Turn the ignition switch ON (II).
2. Reset the M C M (see page 12-6).
3. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC PI634 indicated?
Y E S — G o t o step 4.
NO—Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the MPI m o d u l e and the M C M . B
4. Turn the ignition switch OFF.
5. Turn the battery module switch OFF (see page 12-4).
6. Remove the IPU lid (see page 12-140).
7. Disconnect M C M connector A (31P).
8. Disconnect the MPI module 16P connector.
9. Check for continuity between M C M connector
terminal A25 and body g r o u n d .
MCM C O N N E C T O R A (31P)
1
2 3
4
5 6 7 8 9
1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1
2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1
IPUA (YEL)
Wire side of female t e r m i n a l s
Is there continuity?
YES—Repair short in the w i r e between the MPI
m o d u l e and the M C M (A25), then go to step 24.
NO—Go to step 10.
10. Check for continuity between M C M connector
terminal A25 and MPI m o d u l e 16P connector
terminal No. 5.
MCM C O N N E C T O R A (31P)
1 2
3
4
5 6 7
8 9
1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1
2 2 2 3 2 4
2 5 2 6
2 7 2 8 2 9 3 0 3 1
IPUA (YEL)
W i r e side of female t e r m i n a l s
MPI M O D U L E 16P C O N N E C T O R
I—I
IPUA (YEL)
1 2 3
A
5
6 7 8
9 1 0 1 1
W i r e side of f e m a l e t e r m i n a l s
Is there continuity?
Y E S - G o t o step 11.
NO—Repair open in the w i r e between the MPI
m o d u l e and the M C M (A25), then go to step 24.
11. Check for continuity between MPI module 16P
connector terminal No. 6 and body g r o u n d .
MPI M O D U L E 16P C O N N E C T O R
L G (WHT)
W i r e side of female t e r m i n a l s
Is there continuity?
YES—Go to step 12.
NO—Repair open in the w i r e between the MPI
m o d u l e and G652, then go to step 24.
(cont'd)
12-121