Nissan Titan A60. Manual — part 615
WATER VALVE CIRCUIT
HAC-143
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NO
>> Repair harness or connector.
3.
CHECK WATER VALVE POWER AND GROUND CIRCUITS
1. Rotate temperature control dial to maximum cold.
2. Check voltage between water valve harness connector F68 ter-
minal 1 and terminal 2 while rotating temperature control dial to
maximum heat.
Is the inspection result normal?
YES
>> Replace the water valve.
NO
>> GO TO 4.
4.
CHECK WATER VALVE CONTROL OUTPUT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front air control connector M181.
3. Check continuity between water valve harness connector F68
(A) terminal 1 and front air control harness connector M181 (B)
terminal 41.
4. Check continuity between water valve harness connector F68
(A) terminal 1 and ground.
Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-8, "Removal and Installation"
.
NO
>> Repair harness or connector.
Connector
Terminals
Condition
Voltage
(Approx.)
(+) (-)
Water valve: F68
1
2
Rotate temperature
control dial
Battery
voltage
WJIA1792E
1 - 41
: Continuity should exist.
1 - Ground
: Continuity should not exist.
AWIIA0421ZZ
HAC-144
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
AMBIENT SENSOR
AMBIENT SENSOR
Component Description
INFOID:0000000006164775
COMPONENT DESCRIPTION
Ambient Sensor
The ambient sensor (1) is attached on the radiator core support (left
side). It detects ambient temperature and converts it into a value
which is then input into the front air control.
AMBIENT TEMPERATURE INPUT PROCESS
The front air control includes a processing circuit for the ambient sensor input. However, when the tempera-
ture detected by the ambient sensor increases quickly, the processing circuit retards the front air control func-
tion. It only allows the front air control to recognize an ambient temperature increase of 0.33
°C (0.6°F) per 100
seconds.
This prevents constant adjustments due to momentary conditions, such as stopping after high speed driving.
Although the actual ambient temperature has not changed, the temperature detected by the ambient sensor
will increase. This is because the heat from the engine compartment can radiate to the front grille area, loca-
tion of the ambient sensor.
Ambient Sensor Diagnosis Procedure
INFOID:0000000006164776
Regarding Wiring Diagram information, refer to
HAC-155, "Wiring Diagram - Manual With 2 Control Dial Sys-
DIAGNOSTIC PROCEDURE FOR AMBIENT SENSOR
SYMPTOM: Ambient sensor circuit is open or shorted.
1.
CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
AWIIA1074ZZ
AWIIA0422GB
AMBIENT SENSOR
HAC-145
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
1. Disconnect ambient sensor connector.
2. Turn ignition switch ON.
3. Check voltage between ambient sensor harness connector E1
terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between ambient sensor harness connector
E1 (B) terminal 2 and front air control harness connector M180
(A) terminal 26.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK AMBIENT SENSOR
Check the ambient sensor circuit. Refer to
HAC-144, "Ambient Sensor Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> 1. Replace front air control. Refer to
VTL-8, "Removal and Installation"
2. GO TO
HAC-114, "Front Air Control Self-Diagnosis"
NO
>> 1. Replace ambient sensor. Refer to
HA-45, "Removal and Installation"
.
2. GO TO
HAC-114, "Front Air Control Self-Diagnosis"
4.
CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between ambient sensor harness connector
E1 (B) terminal 1 and front air control harness connector M180
(A) terminal 25.
4. Check continuity between ambient sensor harness connector
E1 (B) terminal 1 and ground.
Is the inspection result normal?
YES
>> 1. Replace front air control. Refer to
VTL-8, "Removal and Installation"
2. GO TO
HAC-114, "Front Air Control Self-Diagnosis"
NO
>> Repair harness or connector.
Ambient Sensor Component Inspection
INFOID:0000000006164777
COMPONENT INSPECTION
Ambient Sensor
1 - Ground
: Approx. 5V
AWIIA0161ZZ
2 - 26
: Continuity should exist.
AWIIA1039ZZ
1 - 25
: Continuity should exist.
1 - Ground
: Continuity should not exist.
AWIIA1040ZZ
HAC-146
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL A/C (TYPE 1)]
AMBIENT SENSOR
After disconnecting ambient sensor (1) connector E1, measure
resistance between terminals 1 and 2 at sensor component side,
using the table below.
If NG, replace ambient sensor. Refer to
.
Temperature
°C (°F)
Resistance k
Ω
−15 (5)
12.73
−10 (14)
9.92
−5 (23)
7.80
0 (32)
6.19
5 (41)
4.95
10 (50)
3.99
15 (59)
3.24
20 (68)
2.65
25 (77)
2.19
30 (86)
1.81
35 (95)
1.51
40 (104)
1.27
45 (113)
1.07
AWIIA1080ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст