Honda ACCORD HYBRID 2005 Service Manual page 516

Variable Cylinder Management (VCM) 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 P2648: VTEC Solenoid Valve Circuit High
Voltage
1. Turn the ignition switch ON (II).
2. Clear the DTC w i t h the HDS.
3. Check for DTCs in the DTCs M E N U w i t h the HDS.
Is DTC P2648 indicated?
Y E S — G o to step 4.
NO—Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the VTEC solenoid valve and the PCM.H
4. Turn the ignition switch OFF.
5. Disconnect the VTEC solenoid valve 2P connector.
6. Measure resistance between VTEC solenoid valve
2P connector terminals No. 1 and No. 2.
V T E C SOLENOID V A L V E 2P C O N N E C T O R
Terminal side of male t e r m i n a l s
Is there 14-30 Q ?
Y E S — G o t o step 7.
N O — G o t o step 12.
7. Check for continuity between VTEC solenoid valve
2P connector terminal No. 1 and body g r o u n d .
V T E C S O L E N O I D V A L V E 2P C O N N E C T O R
GND (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 8.
NO—Repair open in the w i r e between the VTEC
solenoid valve and G 1 0 1 , then go to step 13.
8. J u m p the SCS line w i t h the HDS.
9. Disconnect PCM connector E (31P).
10. Connect VTEC solenoid valve 2P connector
t e r m i n a l No. 2 to body g r o u n d w i t h a j u m p e r w i r e .
V T E C S O L E N O I D V A L V E 2P C O N N E C T O R
C S S ( G R N / Y E L )
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
11-276