Nissan Titan A60. Instruction — part 610
AIR MIX DOOR MOTOR
HAC-123
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
C
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A
B
HAC
N
O
P
1. Check continuity between front air control harness connector
M180 (A) terminal 6 and air mix door motor harness connector
M147 (B) terminal 4.
2. Check continuity between front air control harness connector
M180 terminal 6 and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness as necessary.
6.
CHECK FRONT AIR CONTROL FOR 5 VOLT REFERENCE (VREF), VREF RETURN, AND FEEDBACK
SIGNAL
1. Reconnect front air control harness connectors.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector
M180 (B) terminal 3, and M181 (A) terminal 28.
4. Check voltage between front air control harness connector
M180 terminal 6 and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace front air control. Refer to
7.
CHECK FRONT AIR CONTROL FOR FEEDBACK SIGNAL
A
B
Continuity
Connector
Terminal
Connector
Terminal
M180
6
M147
4
Yes
AWIIA0384ZZ
Connector
Terminal
—
Continuity
M180
6
Ground
No
AWIIA0383ZZ
A
B
Connector
Terminals
Connector
Terminals
Voltage (Approx.)
(+)
(-)
M181
28
M180
3
5 Volts
AWIIA0813ZZ
Connector
Terminal
—
Voltage (Approx.)
M180
6
Ground
0 Volts
AWIIA0382ZZ
HAC-124
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
AIR MIX DOOR MOTOR
1. Reconnect the air mix door motor harness connector M147.
2. Check voltage between front air control harness connector
M180 terminal 6 and ground.
Is the inspection result normal?
YES
>> Inspect air mix door for binding or mechanical failure. If
air mix door moves freely, replace front air control. Refer
to
VTL-8, "Removal and Installation"
.
NO
>> Replace air mix door motor. Refer to
.
Connector
Terminal
—
Voltage (Approx.)
M180
6
Ground
0.2 to 4.8 Volts
AWIIA0382ZZ
INTAKE DOOR MOTOR
HAC-125
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
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A
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HAC
N
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INTAKE DOOR MOTOR
System Description
INFOID:0000000006164760
SYSTEM DESCRIPTION
SYMPTOM:
• Intake door motor does not operate normally.
• Intake door does not change.
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
• Front air control
• Intake door motor (PRB built into the intake door motor)
• Ambient sensor
• Intake sensor
System Operation
The intake door control determines the intake door position based on the position of the recirculation switch.
When the recirculation switch is depressed the intake door motor rotates closing off the fresh air inlet and
recirculating the cabin air. If the recirculation switch is depressed again, the intake door motor rotates in the
opposite direction, again allowing fresh air into the cabin.
Intake Door Control Specification
COMPONENT DESCRIPTION
Intake door motor
The intake door motor is attached to the intake unit. It rotates so that
air is drawn from inlets set by the front air control. Motor rotation is
conveyed to a lever which activates the intake door.
Intake Door Motor Component Function Check
INFOID:0000000006164761
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC (
)
1. Press the vent mode switch (
).
2. Press REC (
) switch. The REC (
)indicator should illuminate.
3. Press REC (
) switch again. The REC (
) indicator should go out.
4. Listen for intake door position change (you should hear blower sound change slightly).
WJIA0436E
WJIA0552E
HAC-126
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
INTAKE DOOR MOTOR
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
HAC-126, "Intake Door Motor Diagnosis Procedure"
.
Intake Door Motor Diagnosis Procedure
INFOID:0000000006164762
Regarding Wiring Diagram information, refer to
HAC-155, "Wiring Diagram - Instruction With 2 Control Dial Sys-
DIAGNOSTIC PROCEDURE FOR INTAKE DOOR MOTOR
SYMPTOM:
• Intake door does not change.
• Intake door motor does not operate normally.
1.
CHECK INTAKE DOOR MOTOR CIRCUITS FOR OPEN AND SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the front air control harness connector M180 (A) and
the intake door motor harness connector M58 (B).
3. Check continuity between front air control harness connector
M180 (A) terminals 21, 22 and the intake door motor harness
connector M58 (B) terminals 1, 6.
4. Check continuity between front air control harness connector
M180 terminals 21, 22 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness as necessary.
2.
CHECK FRONT AIR CONTROL FOR INTAKE AIR DOOR MOTOR POWER AND GROUND
1. Reconnect front air control harness connector.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector
M180 terminal 21 and terminal 22 while placing the HVAC sys-
tem into self-diagnostic mode.
Is the inspection result normal?
YES
>> Inspect intake air door for binding or mechanical failure. If intake air door moves freely, replace the
intake air door motor. Refer to
VTL-18, "Removal and Installation"
.
NO
>> Replace front air control. Refer to
VTL-8, "Removal and Installation"
.
A
B
Continuity
Connector
Terminal
Connector
Terminal
M180
21
M58
6
Yes
22
1
Connector
Terminal
—
Continuity
M180
21
Ground
No
22
AWIIA0401ZZ
AWIIA0398ZZ
Connector
Terminals
Condition Voltage
(Approx.)
(+) (-)
M180
21
22
Self-diagnostic mode (opening)
Battery voltage
22
21
Self-diagnostic mode (closing)
Battery voltage
AWIIA0397ZZ
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