Honda 2004 Odyssey Service Manual page 1643

Climate Control
Climate Control Power and Ground Circuit Troubleshooting
1. Check the No. 3 (7.5A) fuse in the driver's under-
dash fuse/relay box, and the No. 13 (7.5A) fuse in
the passenger's under-dash fuse/relay box.
Are the f uses OK ?
YES
• Without Navigation System: Go to step 2.
• With Navigation System: Go to step 8.
NO Replace the fuse(s), and recheck.
2. Disconnect climate control unit connector A (8P).
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 1 terminal of
climate control unit connector A (8P) and body
ground.
CLIMATE CONTROL UNIT CONNECTOR A (8P)
BLK/YEL
Wire side of female terminals
Is there battery voltage?
YES Go to step 5.
NO Repair open in the wire between the No. 3
fuse in the driver's under-dash fuse/relay box and
the climate control unit.
5. Turn the ignition switch OFF.
21-112
6. Measure the voltage between the No. 2 terminal of
climate control unit connector A (8P) and body
ground.
CLIMATE CONTROL UNIT CONNECTOR A (8P)
Wire side of female terminals
Is there battery voltage?
YES Go to step 7.
NO Repair open in the wire between the No. 13
fuse in the passenger's under-dash fuse/relay box
and the climate control unit.
7. Check for continuity between the No. 8 terminal of
climate control unit connector A (8P) and body
ground.
CLIMATE CONTROL UNIT CONNECTOR A (8P)
Wire side of female terminals
Is there continuity?
YES Check for loose wires or poor connections at
climate control unit connector A (8P). If the
connections are good, substitute a known-good
climate control unit, and recheck. If the symptom/
indication goes away, replace the original climate
control unit.
NO Check for an open in the wire between the
climate control unit and body ground. If the wire is
OK, check for poor ground at G401.
WHT/YEL
BLK