Honda Ridgeline. Manual — part 419
*01
*02
SJC8AH7K711000Y1234FAAT00
−
−
−
−
−
−
−
−
DTC B1234 or DTC indicator J:
YES
NO
YES
NO
YES
NO
YES
NO
21-112
Climate Control
DTC Troubleshooting (cont’d)
CLIMATE CONTROL UNIT 30P CONNECTOR
GRY
PNK/BLK
CLIMATE CONTROL UNIT 30P CONNECTOR
GRY
PNK/BLK
A Short in the
Driver’s Air Mix Control Motor Circuit
1. Clear the DTC with the HDS.
2. Operate the climate control system in several
modes.
3. Check for DTCs using the HDS or self-diagnostic.
Go to step 4.
Intermittent failure.
4. Turn the ignition switch OFF.
5. Test the driver’s air mix control motor (see page
21-135).
Go to step 6.
Replace the driver’s air mix control motor
(see page 21-135).
6. Disconnect the driver’s air mix control motor 7P
connector.
7. Disconnect the climate control unit 30P connector.
8. Check for continuity between body ground and the
climate control unit 30P connector No. 6 and No. 23
terminals individually.
Repair short to body ground in the wires
between the climate control unit and the driver’s air
mix control motor.
Go to step 9.
9. Check for continuity between the climate control
unit 30P connector terminals as follows.
Repair the short in the wires.
Go to step 10.
Wire side of female terminals
Wire side of female terminals
Is DT C B1234 or J indicated?
Is the dr iver ’s air mix contr ol motor OK ?
Is ther e continuity?
Is ther e continuity?
*03
SJC8AH7K711000Y1235FAAT00
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
DTC B1235 or DTC indicator K:
21-113
21-113
CLIMATE CONTROL UNIT 30P CONNECTOR
GRY
PNK/BLK
10. Turn the ignition switch ON (II), and check the same
terminals for voltage to body ground.
Repair short to power in the wire(s) between
the climate control unit and the driver’s air mix
control motor. This short may also damage the
climate control unit. Repair the short to power
before replacing the climate control unit.
Substitute a known-good climate control unit,
and recheck. If the symptom/indication goes away,
replace the original climate control unit.
1. Clear the DTC with the HDS.
2. Operate the climate control system in several
modes.
3. Check for DTCs using the HDS or self-diagnostic.
Go to step 4.
Intermittent failure, check for loose wires or
poor connections on the driver’s air mix control
motor circuit.
4. Turn the ignition switch OFF.
5. Test the driver’s air mix control motor (see page
21-135).
Go to step 6.
Replace the driver’s air mix control motor
(see page 21-135), or repair the driver’s air mix
control linkage or door.
6. Disconnect the driver’s air mix control motor 7P
connector.
7. Disconnect the climate control unit 30P connector.
(cont’d)
A Problem in
the Driver’s Air Mix Control Linkage, Door, or
Motor
Wire side of female terminals
Is ther e voltage?
Is DT C B1235 or K indicated?
Is the dr iver ’s air mix contr ol motor OK ?
*01
*02
−
−
−
−
YES
NO
YES
NO
21-114
Climate Control
DTC Troubleshooting (cont’d)
DRIVER’S AIR MIX CONTROL MOTOR 7P CONNECTOR
CLIMATE CONTROL UNIT 30P CONNECTOR
GRN
PNK/BLU
GRN
PNK/BLU
HVAC CONTROL UNIT 30P CONNECTOR
GRN
PNK/BLU
8. Check for continuity between the following
terminals of climate control unit 30P connector and
the driver’s air mix control motor 7P connector.
30P:
7P:
No. 16
No. 2
No. 17
No. 1
Go to step 9.
Repair open in the wire(s) between the
climate control unit and the driver’s air mix control
motor.
9. Check for continuity between body ground and
climate control unit 30P connector No. 16 and
No. 17 terminals individually.
Repair short to body ground in the wire(s)
between the climate control unit and the driver’s air
mix control motor.
Substitute a known-good climate control unit,
and recheck. If the symptom/indication goes away,
replace the original climate control unit.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e continuity?
*01
SJC8AH7K711000Y1236FAAT00
−
−
−
−
−
−
DTC B1236 or DTC indicator L:
YES
NO
YES
NO
YES
NO
21-115
PASSENGER’S AIR MIX CONTROL MOTOR 7P CONNECTOR
GRY
YEL
RED/BLK
GRY
CLIMATE CONTROL UNIT 30P CONNECTOR
YEL
RED/BLK
An Open in
the Passenger’s Air Mix Control Motor Circuit
1. Clear the DTC with the HDS.
2. Operate the climate control system in several
modes.
3. Check for DTCs using the HDS or self-diagnostic.
Go to step 4.
Intermittent failure, check for loose wires or
poor connections on the passenger’s air mix
control motor circuit.
4. Turn the ignition switch OFF.
5. Test the passenger’s air mix control motor
(see page 21-136).
Go to step 6.
Replace the passenger’s air mix control motor
(see page 21-137).
6. Disconnect the passenger’s air mix control motor
7P connector.
7. Disconnect the climate control unit 30P connector.
8. Check for continuity between following terminals
of the climate control unit 30P connector and the
passenger’s air mix control motor 7P connector.
30P:
7P:
No. 5
No. 3
No. 22
No. 5
No. 23
No. 7
Check for loose wires or poor connections at
the climate control unit 30P connector and at the
passenger’s air mix 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 wires between the climate
control unit and the passenger’s air mix control
motor.
Wire side of female terminals
Wire side of female terminals
Is DT C B1236 or L indicated?
Is the passenger ’s air mix contr ol motor OK ?
Is ther e continuity?
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