Nissan Primera P12. Instruction — part 28
TROUBLE DIAGNOSIS
ATC-105
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Sunload Sensor Circuit
EJS002YB
COMPONENT DESCRIPTION
The sunload sensor is located on the defroster grille. It detects sun-
load entering through windshield by means of a photo diode. The
sensor converts the sunload into a current value which is then input
into the auto amplifier.
SUNLOAD INPUT PROCESS
The auto amp. also includes a processing circuit which averages the variations in detected sunload over a
period of time. This prevents drastic swings in the A/C system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sunload sensor will vary whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the A/C system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sunload, and the system will react accord-
ingly.
DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR
SYMPTOM: Sunload sensor circuit is open or shorted. (25 or
−
25) is
indicated on auto amp. as a result of conducting Self-diagnosis
STEP 2.)
1.
CHECK SUNLOAD SENSOR CIRCUIT BETWEEN SUNLOAD SENSOR AND GROUND
Disconnect sunload sensor harness connector.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
RJIA0165E
RJIA0814E
Terminal
Voltage
(+)
(
−
)
Sunload sensor
connector
Terminal No. (Wire
color)
M82
1 (O/R)
Ground
Approx. 5V
RJIA0563E
ATC-106
TROUBLE DIAGNOSIS
2.
CHECK SUNLOAD SENSOR CIRCUIT BETWEEN SUNLOAD SENSOR AND AUTO AMP.
Disconnect auto amp. harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK SUNLOAD SENSOR.
Refer to
.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to
ATC-49, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NG
>> 1. Replace sunload sensor.
2. Go to
ATC-49, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
4.
CHECK SUNLOAD SENSOR CIRCUIT BETWEEN SUNLOAD SENSOR AND AUTO AMP.
Disconnect auto amp. harness connector.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to self-diagnosis function confirmation procedure
and perform self-diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG
>> Repair harness or connector.
Terminal
Continuity
(+)
(
−
)
Sunload sen-
sor connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M82
2 (B/Y)
M75
11 (B/Y)
Yes
RJIA0815E
Terminal
Continuity
(+)
(
−
)
Sunload sen-
sor connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M82
1 (OR)
M75
12(OR)
Yes
RJIA0816E
TROUBLE DIAGNOSIS
ATC-107
C
D
E
F
G
H
I
K
L
M
A
B
ATC
COMPONENT INSPECTION
Sunload Sensor
Measure voltage between auto amp. terminal 12 and ground.
If NG, replace auto amp.
●
When checking sunload sensor, select a place where sun shines directly on it.
RJIA0817E
SHA930E
ATC-108
TROUBLE DIAGNOSIS
Intake Sensor Circuit
EJS002YC
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit. It converts
temperature of air after it passes through the evaporator into a resis-
tance value which is then input to the auto amp.
After disconnecting intake sensor harness connector, measure resis-
tance between terminals 1 and 2 at sensor harness side, using the
table below.
If NG, replace intake sensor.
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. (24 or
−
24) is
indicated on auto amp. as a result of conducting Self-diagnosis
STEP 2.)
1.
CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND GROUND
Disconnect intake sensor harness connector.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
Temperature
°
C (
°
F)
Resistance k
Ω
With gasoline engine
With diesel engine
−
15 (5)
12.34
18.63
−
10 (14)
9.62
14.15
−
5 (23)
7.56
10.86
0 (32)
6.00
8.41
5 (41)
4.80
6.58
10 (50)
3.87
5.19
15 (59)
3.15
4.12
20 (68)
2.57
3.30
25 (77)
2.12
2.67
30 (86)
1.76
2.17
35 (95)
1.47
1.78
40 (104)
1.23
1.46
45 (113)
1.04
1.21
RJIA0166E
RHA056GA
Terminal
Voltage
(+)
(
−
)
Intake sensor
connector
Terminal No.
(Wire color)
M64
1 (OR/B)
Ground
Approx. 5V
RJIA0819E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст