Heater Control Power And Ground Circuits Troubleshooting - Honda Civic 2002-2003 Service Manual

Heater Control Power and Ground Circuits Troubleshooting
1. Check the No.14 (lOA) fuse in the under-dash
fuse/relay box.
Is the fuse OK?
YES-Go to step 2.
NO-Replace the fuse, and recheck .•
2. Disconnect heater control panel connector A (14P).
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 14 terminal
of heater control panel connector A (14P) and body
ground.
HEATER CONTROL PANEL CONNECTOR A (14PI
Wire side of female terminals
Is there battery voltage?
YES-Go to step 5.
NO-Repair open in the wire between the No. 14
fuse in the under-dash fuse/relay box and the
heater control panel..
5. Turn the ignition switch OFF.
6. Check for continuity between the No. 13 terminal of
heater control panel connector A (14P) and body
ground.
HEATER CONTROL PANEL CONNECTOR A 114PI
=
Wire side offemale terminals
Is there continuity?
YES-Check for loose wires or poor connections at
heater control panel connector A (14P). If the
connections are good, substitute a known-good
heater control panel, and recheck. If the symptom/
indication goes away, replace the original heater
control panel..
NO-Check for an open in the wire between the
heater control panel and body ground. If the wire is
OK, check for poor ground at G501 .•
21-27