Honda ACCORD HYBRID 2005 Service Manual page 420

PGM-FI System
DTC Troubleshooting (cont'd)
DTC U0037: IMA-CAN Malfunction (Bus-Off)
(MCM-PCM)
NOTE: Information marked w i t h an asterisk (*) applies
to the IMACANL line.
1. Turn the ignition switch ON (II).
2. Clear the DTC w i t h the HDS.
3. Check for T e m p o r a r y DTCs or DTCs in the DTCs
MENU w i t h the HDS.
Is DTC U0037 indicated?
Y E S - G o t o step 4.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
the M C M , the A/C compressor driver and the
PCM.B
4. Turn the ignition switch OFF.
5. Measure resistance between PCM connector
terminals D1 * and D13.
PCM C O N N E C T O R D (17P)
IMACANL (BLK)*
1 2
A
4 5 6
8 9 10 11 12
13 14
15 16 17
IMACANH (WHT)
Wire side of f e m a l e t e r m i n a l s
Is there about 54— 66 & at room temperature?
Y E S — G o t o step 2 1 .
N O — G o t o step 6.
6. J u m p the SCS line w i t h the HDS.
7. Disconnect PCM connector D (17P).
8. Remove the IPU lid (see page 12-140).
9. Disconnect M C M connector A (31P) (see page
12-140).
10. Disconnect the A/C compressor driver 4P connector
(see page 21-99).
11. Check for continuity between PCM connector
terminals D1 * and D13.
PCM C O N N E C T O R D (17P)
IMACANL (BLK)*
1 2
/ 4 5 6
/ 8 9 10 11 12
13 14 15 16 17
IMACANH (WHT)
Wire side of f e m a l e t e r m i n a l s
Is there continuity?
Y E S — R e p a i r short in the w i r e between the PCM
(D13 (IMACANH line)) and (D1 (IMACANL line)),
then go to step 43.
N O — G o t o step 12.
12. Connect between PCM connector terminal D1 \ D13
to body ground w i t h a j u m p e r w i r e individually.
PCM C O N N E C T O R D (17P)
. IMACANL (BLK)*
J U M P E R WIRE
1 2
/
4 5 6
8 9 10 11 12
13 14
15 16 17
IMACANH (WHT)
J U M P E R WIRE
Wire side of f e m a l e t e r m i n a l s
11-180