Honda ACCORD HYBRID 2005 Service Manual page 798

(MA 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 P1629 (79): Battery Current Sensor
Circuit Malfunction
NOTE: If DTC P0A1B is stored at the same time as DTC
P1629, troubleshoot DTC P1629 first, then recheck for
DTC P0A1B.
1. Turn the ignition switch ON (II), and w a i t
10 seconds.
2. Check the BATTERY CURRENT SENSOR SUPPLY
VOLTAGE (POSITIVE) in the DATA LIST w i t h the
HDS.
Is about 9.5- 14.5 V?
Y E S — G o t o step 3.
N O — G o t o step 4.
3. Check the BATTERY CURRENT SENSOR SUPPLY
VOLTAGE (NEGATIVE) in the DATA LIST w i t h the
HDS.
Is about -9.5-- 14.5 V?
YES—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the battery current sensor and the M C M . B
NO—Go to 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 battery current sensor 3P connector.
8. Disconnect M C M connector A (31P).
9. Check for continuity between body g r o u n d and
M C M connector terminals A 8 , A9 individually.
M C M C O N N E C T O R A (31P)
I P W R - ( B L U )
1 | 2 | 3 | 4 | 5
6 | 7 | | 8 | 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24
25 26
27 28 29 30 31
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Is there continuity?
YES—Repair short in the w i r e between the battery
current sensor and the M C M (A8, A9), then go to
step 10.
N O — G o t o step 17.
10. Turn the ignition switch OFF.
11. Reconnect all connectors.
12. Reinstall the IPU lid (see page 12-140), then turn the
battery module switch ON (see page 12-4).
13. Turn the ignition switch ON (II).
14. Reset the M C M (see page 12-6).
15. Turn the ignition switch ON (II), and w a i t
10 seconds.
16. 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—lf DTC P1629 is indicated, check for poor
connections or loose t e r m i n a l s at the battery
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 t r o u b l e s h o o t i n g .
NO—Troubleshooting is complete. •
17. Reinstall the IPU lid (see page 12-140), then turn the
battery module switch ON (see page 12-4).
18. 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).
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—lf DTC P1629 is indicated, check for poor
connections or loose t e r m i n a l s at the battery
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 t r o u b l e s h o o t i n g .
NO—If the M C M w a s updated, t r o u b l e s h o o t i n g is
complete. If the M C M w a s substituted, replace the
original M C M (see page 12-8). •
12-120