Honda ACCORD HYBRID 2005 Service Manual page 760

IMA System
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC P1437 (41): Motor Power Inverter (MPI)
Module Short Circuit
1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P0AA6, P1440, and/or P15A5 indicated?
YES—Go to the indicated D T C s t r o u b l e s h o o t i n g .
N O — G o to step 3.
3. Reset the M C M (see page 12-6).
4. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P1437 indicated?
Y E S - G o t o step 7.
N O — G o t o step 5.
5. Start the engine, and let it idle.
6. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC P1437 indicated?
YES—Replace the MPI m o d u l e (see page 12-144),
then go to step 13.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor c o n n e c t i o n s or loose t e r m i n a l s a t
the MPI m o d u l e and the M C M . B
7. Turn the ignition switch OFF.
8. Turn the battery module switch OFF (see page 12-4).
9. Remove the IPU lid (see page 12-140).
10. Disconnect the battery m o d u l e 16P connector.
11. Turn the ignition switch ON (II).
12. Measure voltage between body ground and MPI
module 16P connector terminal No. 8.
MPI M O D U L E 16P C O N N E C T O R
IGA2 (BLK)
Wire side of f e m a l e t e r m i n a l s
Is there battery voltage?
YES—Replace the MPI m o d u l e (see page 12-144),
then go to step 13.
N O -
• Repair connection in the MPI module connector.
• Repair open or short in the w i r e between + B IMA
(10 A) fuse, M C M relay 2 and the MPI m o d u l e ,
then go to step 13.
13. Turn the ignition switch OFF.
14. Reconnect all connectors.
15. Reinstall the IPU lid (see page 12-140), then turn the
battery module switch ON (see page 12-4).
16. Turn the ignition switch ON (II).
17. Reset the M C M (see page 12-6).
18. Start the engine, and let it idle.
19. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
YES—If DTC P1437 is indicated, check for poor
connections or loose terminals at the MPI module
and the M C M , then go to step 1. If any other
T e m p o r a r y DTCs or DTCs are indicated, go to the
indicated D T C s t r o u b l e s h o o t i n g .
NO—Troubleshooting is c o m p l e t e . B
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