Honda 2004 Odyssey, Service Manual

Page: 1563 / 2459

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21-32
Heating/Air Conditioning
Compressor Clutch Circuit Troubleshooting
COMPRESSOR CLUTCH RELAY 4P SOCKET
COMPRESSOR CLUTCH RELAY 4P SOCKET
JUMPER
WIRE
RED
NOTE:
• Do not use this troubleshooting procedure if the fans
are also inoperative with the A/C on. Refer to the
symptom troubleshooting index.
• Before performing symptom troubleshooting, check
for powertrain DTCs (see page 11-3).
1. Check the No. 59 (7.5A) fuse in the under-hood fuse
/relay box, and the No. 3 (7.5A) fuse in the driver’s
under-dash fuse/relay box.
Go to step 2.
Replace the fuse(s), and recheck.
2. Check the engine coolant temperature, throttle
position, and idle speed (Use the HDS PGM-FI data
list if possible).
Sensor ’99-01 models: 163 194°F
(73 90°C)
’02-04 models: 169 194°F
(76 90°C)
TPS About 0.5 V
RPM More than 730
Go to step 3.
Troubleshoot and repair cause of high engine
coolant temperature, low idle, or excessively high
throttle position sensor reading.
3. Remove the compressor clutch relay from the
under-hood fuse/relay box, and test it (see page 22-
88).
Go to step 4.
Replace the compressor clutch relay.
4. Measure the voltage between the No.1 terminal of
the compressor clutch relay 4P socket and body
ground.
Go to step 5.
Replace the under-hood fuse/relay box.
5. Connect the No. 1 and No. 2 terminals of the
compressor clutch relay 4P socket with a jumper
wire.
Go to step 6.
Go to step 15.
6. Disconnect the jumper wire.
7. Turn the ignition switch ON (II).
Ar e the f uses OK ?
Is the coolant temper atur e, thr ottle position, and
idle speed OK ?
Is the r elay OK ?
Is ther e batter y voltage?
Does the compr essor clutch click ?
03/07/29 10:10:30 61S0X050_210_0033