Symptom Troubleshooting Index - Honda Civic 2002-2003 Service Manual

Heating and Air Conditioning
Symptom Troubleshooting Index
Symptom
Diagnostic procedure Also check for
Recirculation control doors do not Recirculation Control Motor Cleanliness and tightness of all
change between Fresh and Recirculate
Circuit Troubleshooting (see page
connectors
21-25)
Both heater and NC do not work , Heater Control Power and Ground • Blown fuse No. 14110A) in the
Circuits Troubleshooting (see under-dash fuse/relay box
page 21-27)
• Poor ground at G501
• Cleanliness and tightness of all
connectors
Condenser fan does not run at all Ibut
Condenser Fan Circuit
• Poor ground at G301
radiator fan runs with the NC on) Troubleshooting Isee page 21-28) • Cleanliness and tightness of all
I
connectors __
Both fans do not run with the
NC
on
Radiator and Condenser Fans
,
·
Blown fuse No.1 120A) and No.4
Common Circuit Troubleshooting
I
(20A) in the under-hood fuse/relay
Isee page 21-29)
!
box
• Poor ground at G301
• Cleanliness and tightness of all
Compressor clutch does not engage
Compressor Clutch Circuit
i
connectors
: Cleanliness and tightness of all
Iboth fans run with NC on) Troubleshooting Isee page 21-30) .c-.connectors
NC system does not come on (both
NC Pressure Switch Circuit
i
• Blown fuse No.1 120A) and No.4
fans and compressor)
Troubleshooting Isee page 21-32)
I
(20A) in the under-hood fuse/relay
I
box
·
Poor ground at G301
• Cleanliness and tightness of all
i
connectors
21-10