Honda 2004 Odyssey Service Manual page 2262

11. Turn the ignition switch OFF.
12. Disconnect the driver's under-dash fuse/relay box
connector I from the under-dash fuse/relay box.
13. Turn the ignition switch ON (II).
14. Check for voltage between the No. 3 terminal of the
OPDS unit harness connector D (8P) and body
ground. There should be 0.5 V or less.
OPDS UNIT HARNESS CONNECTOR D (8P)
Wire side of female terminals
Is the voltage as specif ied?
YES Faulty OPDS unit; replace the OPDS unit (see
page 23-387).
NO Go to step 15.
15. Turn the ignition switch OFF.
16. Disconnect gauge assembly connector A (14P)
from the gauge assembly (see page 22-100).
I
17. Turn the ignition switch ON (II).
18. Check for voltage between the No. 3 terminal of
OPDS unit harness connector D (8P) and body
ground. There should be 0.5 V or less.
OPDS UNIT HARNESS CONNECTOR D (8P)
Wire side of female terminals
Is the voltage as specif ied?
YES Short to power in the gauge assembly;
replace the gauge assembly.
NO Go to step 19.
A
(cont'd)
23-197