Honda ACCORD HYBRID 2005 Service Manual page 614

Intake Air System
D T C T r o u b l e s h o o t i n g
DTC P1077: IMT Valve Stuck in Short Position
1. Start the engine, and let it idle.
2. Make sure the IMT VALVE C M D is CLOSED in the
DATA LIST w i t h the HDS.
3. Check the IMT VALVE S W in the DATA LIST w i t h
the HDS.
Is OPEN 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 IMT actuator and the P C M . B
4. Turn the ignition switch OFF.
5. Disconnect the IMT actuator 5P connector.
6. Turn the ignition switch ON (II).
7. Check the IMT VALVE S W in the DATA LIST w i t h
the HDS.
Is CLOSED indicated?
Y E S — G o t o step 12.
N O — G o t o step 8.
8. Turn the ignition switch OFF.
9. J u m p the SCS line w i t h the HDS.
10. Disconnect PCM connector B (24P).
11. Check for continuity between PCM connector
terminal B11 and body g r o u n d .
PCM C O N N E C T O R B (24P)
I
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
/
17 18 19
20 21 22 23 24
IMTM (WHT/BLK)
W i r e 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
(B11) and the IMT actuator, then go to step 23.
N O — G o t o step 29.
12. Turn the ignition switch OFF.
13. J u m p the SCS line w i t h the HDS.
14. Disconnect PCM connector B (24P).
15. Check for continuity between PCM connector
terminal B4 and body g r o u n d .
PCM C O N N E C T O R B (24P)
I M T + (WHT/BLU)
17
2 3 4 5
19
11 12
20
13
21
14
22
15
23 24
W i r e 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
(B4) and the IMT actuator, then go to step 23.
N O — G o t o step 16.
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