Nissan Titan A60. Instruction — part 630
AIR MIX DOOR MOTOR
HAC-203
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
1. Reconnect front air control harness connector.
2. Turn ignition switch ON.
3. Rotate temperature control dial to 32
°C (90°F).
4. Check voltage between front air control harness connector
M176 terminal 3 and terminal 4 while rotating temperature con-
trol dial to 18
°C (60°F) and back to 32°C (90°F).
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace front air control. Refer to
VTL-8, "Removal and Installation"
.
3.
CHECK AIR MIX DOOR MOTOR PBR CIRCUITS FOR OPEN AND SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the front air control harness connector M176 (A).
3. Check continuity between front air control harness connector
M176 (A) terminals 2, 15 and air mix door motor harness con-
nector M147 (B) terminals 2, 3.
4. Check continuity between front air control harness connector
M176 terminals 2, 15 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness as necessary.
4.
CHECK PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN AND SHORT TO GROUND
1. Check continuity between front air control harness connector
M176 (A) terminal 18 and air mix door motor harness connector
M147 (B) terminal 4.
Connector
Terminals
Condition Voltage
(Approx.)
(+) (-)
M176
3
4
While rotating temperature control
dial from 32
°C (90°F) to 18°C (60°F)
Battery voltage
4
3
While rotating temperature control
dial from 18
°C (60°F) to 32°C (90°F)
Battery voltage
AWIIA0504ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
M176
15
M147
2
Yes
2
3
Connector
Terminal
—
Continuity
M176
15
Ground
No
2
AWIIA0955ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
M176
18
M147
4
Yes
AWIIA0515ZZ
HAC-204
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
AIR MIX DOOR MOTOR
2. Check continuity between front air control harness connector
M176 terminal 18 and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness as necessary.
5.
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
M176 terminal 2 and terminal 15.
4. Check voltage between front air control harness connector
M176 terminal 18 and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace front air control. Refer to
6.
CHECK FRONT AIR CONTROL FOR FEEDBACK SIGNAL
1. Reconnect the air mix door motor harness connector M147.
2. Check voltage between front air control harness connector
M176 terminal 18 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
—
Continuity
M176
18
Ground
No
AWIIA0514ZZ
Connector
Terminal
Connector
Terminal
Voltage (Approx.)
(+)
(-)
M176
2
M176
15
5 Volts
AWIIA0511ZZ
Connector
Terminal
—
Voltage (Approx.)
M176
18
Ground
0 Volts
AWIIA0513ZZ
Connector
Terminal
—
Voltage (Approx.)
M176
18
Ground
0.2 to 4.8 Volts
AWIIA0513ZZ
INTAKE DOOR MOTOR
HAC-205
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
INTAKE DOOR MOTOR
System Description
INFOID:0000000006164819
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 (PBR built into the intake door motor)
• 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:0000000006164820
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-206
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
INTAKE DOOR MOTOR
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
HAC-206, "Intake Door Motor Diagnosis Procedure"
Intake Door Motor Diagnosis Procedure
INFOID:0000000006164821
Regarding Wiring Diagram information, refer to
HAC-232, "Wiring Diagram - Instruction With 3 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 M176 (A) and
the intake door motor harness connector M58 (B).
3. Check continuity between front air control harness connector
M176 (A) terminals 8, 7 and the intake door motor harness con-
nector M58 (B) terminals 1, 6.
4. Check continuity between front air control harness connector
M176 terminals 8, 7 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
M176 terminal 8 and terminal 7 while placing the HVAC system
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
M176
8
M58
6
Yes
7
1
Connector
Terminal
—
Continuity
M176
8
Ground
No
7
AWIIA0520ZZ
AWIIA0517ZZ
Connector
Terminals
Condition Voltage
(Approx.)
(+) (-)
M176
8
7
Self-diagnostic mode (opening)
Battery voltage
7
8
Self-diagnostic mode (closing)
Battery voltage
AWIIA0516ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст