Acura CSX. Manual — part 483
08
09
10
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
21-50
Climate Control
BLOWER MOTOR RELAY 4P SOCKET
BLOWER MOTOR RELAY 4P SOCKET
BRN
BLOWER MOTOR RELAY 4P SOCKET
BLK
29. Measure the voltage between the blower motor
relay 4P socket terminal No. 1 and body ground.
Go to step 30.
Replace the under-hood fuse/relay box
(see page 22-65).
30. Turn the ignition switch to ON (II).
31. Measure the voltage between the blower motor
relay 4P socket terminal No. 3 and body ground.
Go to step 32.
Repair open in the wire between the No. 36
(10 A) fuse in the under-dash fuse/relay box and the
blower motor relay.
32. Turn the ignition switch to LOCK (0).
33. Check for continuity between the blower motor
relay 4P socket terminal No. 4 and body ground.
Repair open in the WHT wire between the
blower motor relay and the blower motor.
Check for an open in the wire between the
blower motor relay and body ground. If the wire is
OK, check for poor ground at G301 (see page 22-64).
Is ther e batter y voltage?
Is ther e batter y voltage?
Is ther e continuity?
08/08/21 14:42:23 61SNR030_210_0051
01
01
SNR9A00K711000Y2983FAAT00
−
−
−
−
−
−
−
−
DTC B2983 or DTC indicator B and AUTO:
YES
NO
YES
NO
YES
NO
YES
NO
21-51
ORN
ORN
CLIMATE CONTROL UNIT 32P CONNECTOR
RED
RECIRCULATION CONTROL MOTOR 7P CONNECTOR
PUR
PUR
ORN
CLIMATE CONTROL UNIT 32P CONNECTOR
A Problem in the Recirculation Control
Linkage, Door, or Motor
1. Clear the DTC with the HDS.
2. Turn the ignition switch to LOCK (0), and then turn
to ON (II).
3. Do the self-diagnostic with the HDS (see page
21-10) or climate control unit (see page 21-11).
4. Check for DTCs.
Go to step 5.
Intermittent failure.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the recirculation control motor 7P
connector.
7. Disconnect the climate control unit 32P connector.
8. Check for continuity between the following
terminals of climate control unit 32P connector and
the recirculation control motor 7P connector.
32P:
7P:
No. 15
No. 1
No. 16
No. 2
Go to step 9.
Repair open in the wire(s) between the
climate control unit and the recirculation control
motor.
9. Check for continuity between body ground and the
climate control unit 32P connector terminals No. 15
and No. 16 individually.
Repair short to body ground in the wire(s)
between the climate control unit and the
recirculation control motor.
Go to step 10.
10. Test the recirculation control motor (see page
21-74).
Substitute a known-good climate control unit,
and recheck. If the symptom/indication goes away,
replace the original climate control unit.
Replace the recirculation control motor
(see page 21-74), or repair the recirculation control
linkage or door.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is DT C B2983 or B and AUT O indicated?
Is ther e continuity?
Is ther e continuity?
Is the r ecir culation contr ol motor OK ?
08/08/21 14:42:23 61SNR030_210_0052
01
SNR9A00K711000Y2986FAAT00
−
−
−
−
−
−
DTC B2986 or DTC indicator A and AUTO:
YES
NO
YES
NO
YES
NO
21-52
Climate Control
RECIRCULATION CONTROL MOTOR 7P CONNECTOR
RED
YEL
YEL
RED
CLIMATE CONTROL UNIT 32P CONNECTOR
BLK
BLK
An Open in the Recirculation Control Motor
Circuit
1. Clear the DTC with the HDS.
2. Turn the ignition switch to LOCK (0), and then turn
to ON (II).
3. Do the self-diagnostic with the HDS (see page
21-10) or climate control unit (see page 21-11).
4. Check for DTCs.
Go to step 5.
Intermittent failure, check for loose wires or
poor connections on the recirculation control motor
circuit.
5. Turn the ignition switch to LOCK (0).
6. Test the recirculation control motor (see page
21-74).
Go to step 7.
Replace the recirculation control motor
(see page 21-74).
7. Disconnect the recirculation control motor 7P
connector.
8. Disconnect the climate control unit 32P connector.
9. Check for continuity between the following
terminals of the climate control unit 32P connector
and the recirculation control motor 7P connector.
32P:
7P:
No. 7
No. 5
No. 19
No. 7
No. 31
No. 3
Check for loose wires or poor connections at
the climate control unit 32P connector and at the
recirculation control motor 7P connector. 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.
Repair open in the wire(s) between the
climate control unit and the recirculation control
motor.
Wire side of female terminals
Wire side of female terminals
Is DT C B2986 or A and AUT O indicated?
Is the r ecir culation contr ol motor OK ?
Is ther e continuity?
08/08/21 14:42:23 61SNR030_210_0053
01
02
SNR9A00G10500016701FAAT00
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
21-53
Climate Control Power and Ground Circuit Troubleshooting
LT GRN
CLIMATE CONTROL UNIT 32P CONNECTOR
BLK
CLIMATE CONTROL UNIT 32P CONNECTOR
1. Check the No. 36 (10 A) fuse in the under-dash fuse/
relay box.
Go to step 2.
Replace the fuse, and recheck. If the fuse
blows again, check for a short in the No. 36 (10 A)
fuse circuit.
2. Disconnect the climate control unit 32P connector.
3. Turn the ignition switch to ON (II).
4. Measure the voltage between the climate control
unit 32P connector terminal No. 3 and body ground.
Go to step 5.
Repair an open in the wire between the No. 36
(10 A) fuse in the under-dash fuse/relay box and the
climate control unit.
5. Turn the ignition switch to LOCK (0).
6. Check for continuity between the climate control
unit 32P connector terminal No. 5 and body ground.
Check for loose wires and poor connections
at the climate control unit 32P connector. If
connections are good, substitute a known-good
climate control unit and recheck. If the symptom/
indication goes away, replace the original climate
control unit.
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 G504 (see page 22-64).
Wire side of female terminals
Wire side of female terminals
Is the f use OK ?
Is ther e batter y voltage?
Is ther e continuity?
08/08/21 14:42:24 61SNR030_210_0054
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