Honda 2004 Odyssey Service Manual page 494

11. Connect IAC valve 3P connector terminal No. 3 to
body ground with a jumper wire.
IAC VALVE 3P CONNECTOR
JUMPER WIRE
Wire side of female terminals
12. Check for continuity between PCM connector
terminal B23 and body ground.
PCM CONNECTOR B (25P)
IACV (BLK/RED)
('99-00 models:
IACV (BLK/BLU))
Wire side of female terminals
Is there continuity?
YES Go to step 13.
NO Repair open in the wire between the IAC valve
and the PCM (B23).
13. Remove the jumper wire from the IAC valve 3P
connector, then reconnect the IAC valve 3P
connector.
14. Turn the ignition switch ON (II).
IACV (BLK/RED)
('99-00 models:
IACV (BLK/BLU))
15. Measure voltage between body ground and PCM
connector terminal B23.
PCM CONNECTOR B (25P)
IACV (BLK/RED)
('99-00 models:
IACV (BLK/BLU))
Wire side of female terminals
Is there battery voltage?
YES Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
NO Replace the IAC valve.
11-185