Honda ACCORD HYBRID 2005 Service Manual page 716

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 P0A27 (46): High Voltage Contactor/
Bypass Contactor Stays Activated
1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P16C1 indicated?
YES—Do the troubleshooting for DTC P16C1
(see page 12-125).
N O — G o t o step 3.
3. Reset the M C M (see page 12-6).
4. Turn the ignition switch OFF, and w a i t 30 seconds.
5. Turn the ignition switch ON (II).
6. Check the SOC in the DATA LIST w i t h the HDS.
7. Start the engine, and hold it between 3,500 r p m
and 4,000 r p m w i t h o u t load (in Park or neutral) until
the SOC increases to 70 %.
8. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P0A27 indicated?
YES—Go to step 9.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the high voltage contactor, the bypass contactor,
and the M C M . •
9. Turn the ignition switch OFF.
10. Turn the battery module switch OFF (see page 12-4).
11. Remove the IPU lid (see page 12-140).
12. Measure voltage between body g r o u n d and M C M
connector terminals B12 and R13 individually.
MCM C O N N E C T O R B (24P)
PRE (RED)
. .
1 3 / 5 6 7
8 9 1 1 1 2 1 3 1 4 1 5
/
1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4
CNT (BLU)
Y X
Wire side of f e m a l e t e r m i n a l s
Is there battery voltage?
YES — G o t o step 25.
N O — G o t o step 13.
13. Measure resistance between high voltage
contactor terminals No. 1 (A) and No. 2 (B).
Is there about 0 Q?
YES —Replace the high voltage contactor (see page
12-142), then g o t o step 15.
N O — G o t o step 14.
12-38