Honda ACCORD HYBRID 2005 Service Manual page 792

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 P15A6 (86): U Phase Motor Current
Sensor Circuit Malfunction
1. Turn the ignition switch ON (II).
2. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC P0A5E, and/or P0A5F Indicated?
Y E S — D o the t r o u b l e s h o o t i n g for DTC P0A5E
(see page 12-44), and/or DTC P0A5F (see page
12-47).
NO—Go to step 3.
3. Reset the M C M (see page 12-6).
4. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Is DTC P15A6 indicated?
Y E S — G o t o step 5.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at U
phase motor current sensor and the M C M . B
5. Turn the ignition switch OFF.
6. Turn the battery module switch OFF (see page 12-4).
7. Remove the IPU lid (see page 12-140).
8. Measure voltage between U phase motor current
sensor 3P connector t e r m i n a l s No. 1 and No. 2.
U PHASE MOTOR CURRENT SENSOR
3P CONNECTOR
VCCIU (WHT)
3
SGIU (BLK)
Wire side of female terminals
Is there 4.8-5.2 V?
Y E S — G o t o step 9.
N O — G o t o step 16.
9. Measure voltage between U phase m o t o r current
sensor 3P connector t e r m i n a l s No. 2 and No. 3.
U 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
S G I U (BLK)
I
IUPH (RED)
Wire side of f e m a l e t e r m i n a l s
Is there 2.3-2.7 V?
Y E S — G o t o step 16.
NO—Replace the U phase m o t o r current sensor
(see page 12-143), then go t o step 10.
10. Turn the ignition switch OFF.
11. Reconnect all connectors.
12. Reinstall the IPU lid (see page 12-140), then t u r n the
battery module switch ON (see page 12-4).
13. Turn the ignition switch O N (II).
14. Reset the M C M (see page 12-6).
15. 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?
Y E S — I f DTC P15A6 is indicated, check for poor
connections or loose terminals at the U phase
m o t o r current sensor 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
troubleshooting.
NO—Troubleshooting is complete. •
16. Reinstall the IPU lid (see page 12-140), then turn the
battery module switch ON (see page 12-4).
17. Update the M C M if it does not have the latest
software, or substitute a k n o w n - g o o d M C M
(see page 12-8).
12-114