Honda ACCORD HYBRID 2005 Service Manual page 771

DTC P1448 (63): Intelligent Power Unit (IPU)
Module Fan Problem
1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs w i t h the HDS.
Is DTC P1634 indicated?
YES—Do the troubleshooting for DTC P1634
(see page 12-121).
N O — G o t o step 3.
3. Reset the M C M (see page 12-6).
4. Do the IPU MODULE FAN DRIVE in the
INSPECTION MENU w i t h the HDS.
Does the screen indicate OUT OF RANGE?
YES—Go to step 5.
N O - l f screen indicates CONDITION IS NORMAL,
intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the IPU m o d u l e fan 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. Disconnect the IPU module fan 4P connector.
9. Connect IPU module fan 4P connector terminal
No. 3 to body ground w i t h a j u m p e r w i r e .
IPU M O D U L E FAN 4P C O N N E C T O R
1 2 3 4
FANCNTL (WHT)
J U M P E R WIRE
W i r e side of female t e r m i n a l s
10. Disconnect M C M connector B (24P).
11. Check for continuity between M C M connector
terminal B11 and body g r o u n d .
MCM C O N N E C T O R B (24P)
I
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
FANCNTL (BLK)
W i r e side of female t e r m i n a l s
Is there continuity?
Y E S — G o t o step 12.
NO—Repair open in the w i r e between the IPU
m o d u l e fan and the M C M ( B I D , then go to step 22.
12. Disconnect a j u m p e r w i r e f r o m the IPU m o d u l e fan
4P connector.
13. Check for continuity between M C M connector
terminal B20 and body g r o u n d .
MCM C O N N E C T O R B (24P)
I
1
/
3
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
NFAN (WHT)
W i r e 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 IPU
m o d u l e fan and the M C M (B20), then go to step 22.
N O — G o t o step 14.
(cont'd)
12-93