Honda ACCORD HYBRID 2005 Service Manual page 732

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 P0A64 (28): W Phase Motor Current
Sensor Circuit Low Voltage
1. Turn the ignition switch ON (II).
2. Check the W PHASE MOTOR CURRENT SENSOR in
the DATA LIST w i t h the HDS.
Is about 0.15 V or less indicated?
Y E S — G o t o step 3.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the W phase motor current sensor and the M C M . •
3. Check for Temporary DTCs or DTCs w i t h the HDS.
Are DTC P0A5E, P0A61, and P0A64 indicated at
the same time?
Y E S — G o t o step 2 1 .
N O — G o t o step 4.
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 the W phase m o t o r current sensor 3P
connector.
8. Turn the ignition switch ON (II).
9. Measure voltage between W phase motor current
sensor 3P connector terminals No. 1 and No. 2.
W PHASE MOTOR C U R R E N T S E N S O R
3P CONNECTOR
VCCIW (WHT/GRN)
S G I W (WHT/BLU)
Wire side of female t e r m i n a l s
Is there about 5 V?
Y E S — G o t o step 10.
NO—Go to step 18.
10. Turn the ignition switch OFF.
11. Disconnect M C M connector A (31P).
12. Check for continuity between W phase motor
current sensor 3P connector terminal No. 3 and
body g r o u n d .
W PHASE MOTOR C U R R E N T S E N S O R
3P C O N N E C T O R
1
2
IWPH (GRN)
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
W phase motor current sensor and the M C M (A28),
then go to step 4 1 .
N O — G o t o step 13.
13. Check for continuity between W phase motor
current sensor 3P connector terminal No. 3 and
M C M connector terminal A28.
MCM 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
W PHASE MOTOR C U R R E N T
S E N S O R 3P C O N N E C T O R
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
IWPH (GRN)
IWPH (GRN)
Wire side of female t e r m i n a l s
12-54