Honda 2004 Odyssey Service Manual page 175

Cylinder Head
DTC Troubleshooting (cont'd)
23. With the battery positive terminal still connected to
the VTEC solenoid valve, measure voltage between
PCM connector terminal C10 (1999-2000, 2002-2004
models) or A20 (2001 model) and body ground.
1999-2000 models:
PCM CONNECTOR C (31P)
Wire side of female terminals
2001 model:
PCM CONNECTOR A (31P)
Wire side of female terminals
2002-2004 models:
PCM CONNECTOR C (31P)
Wire side of female terminals
Is there battery voltage above 4,000 rpm?
YES Go to step 24.
NO Replace the VTEC oil pressure switch.
6-8
VTPSW
(BLU/BLK)
VTM (BLU/BLK)
VTPSW
(BLU/BLK)
24. Turn the ignition switch OFF.
25. Disconnect the battery positive terminal from the
VTEC solenoid valve terminal.
26. Check for continuity between the VTEC solenoid
valve harness 1P connector terminal and PCM
connector terminal B12 (1999-2000, 2002-2004
models) or B2 (2001 model).
1999-2000 models:
VTEC SOLENOID VALVE HARNESS
1P CONNECTOR
VTS (GRN/YEL)
Wire side of female terminals
2001 model:
VTEC SOLENOID VALVE HARNESS
1P CONNECTOR
VTS (GRN/YEL)
Wire side of female terminals
2002-2004 models:
VTEC SOLENOID VALVE HARNESS
1P CONNECTOR
VTS (GRN/YEL)
Wire side of female terminals
Is there continuity?
YES Go to step 27.
NO Repair an open in the wire between the PCM
connector terminal B12 (1999-2000, 2002-2004
models) orB2 (2001 model) and VTEC solenoid
valve connector.
PCM CONNECTOR
B (25 P)
PCM CONNECTOR
B (24P)
PCM CONNECTOR
B (25 P)