Almera Tino V10 (2003 year). Manual — part 40
TROUBLE DIAGNOSIS
ATC-97
C
D
E
F
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K
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M
A
B
ATC
COMPONENT INSPECTION
Ambient Sensor
After disconnecting ambient sensor harness connector, measure
resistance between terminals 2 and 1 at sensor harness side, using
the table below.
If NG, replace ambient sensor.
In-vehicle Sensor Circuit
EJS0037H
COMPONENT DESCRIPTION
In-vehicle sensor
The in-vehicle sensor is located on instrument lower panel. It con-
verts variations in temperature of compartment air drawn from the
aspirator into a resistance value. It is then input into the auto ampli-
fier.
Aspirator
The aspirator is located on heater & cooling unit. It produces vacuum
pressure due to air discharged from the heater & cooling unit, contin-
uously taking compartment air in the aspirator.
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
RJIA2327E
RJIA2328E
RHA650H
ATC-98
TROUBLE DIAGNOSIS
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR
SYMPTOM: In-vehicle sensor circuit is open or shorted. (22 or
−
22 is
indicated on auto amp. as a result of conducting Self-diagnosis
STEP 2.)
1.
CHECK IN-VEHICLE SENSOR CIRCUIT BETWEEN IN-VEHICLE SENSOR AND GROUND
Disconnect in-vehicle sensor harness connector.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
2.
CHECK IN-VEHICLE SENSOR CIRCUIT BETWEEN IN-VEHICLE SENSOR AND AUTO AMP.
Disconnect auto amp. harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
RJIA1804E
RHA056GB
Terminal
Voltage
(+)
(-)
In-vehicle sensor
connector
Terminal No.
(Wire color)
M86
1 (OR/L)
Ground
Approx. 5V
RJIA0559E
Terminal
Continuity
(+)
(-)
In-vehicle
sensor con-
nector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M86
2 (B/Y)
M110
11 (B/Y)
Yes
RJIA0812E
TROUBLE DIAGNOSIS
ATC-99
C
D
E
F
G
H
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K
L
M
A
B
ATC
3.
CHECK IN-VEHICLE SENSOR
Refer to
ATC-97, "In-vehicle Sensor Circuit"
.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to
ATC-42, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NG
>> 1. Replace in-vehicle sensor.
2. Go to
ATC-42, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
4.
CHECK IN-VEHICLE SENSOR CIRCUIT BETWEEN IN-VEHICLE SENSOR AND AUTO AMP.
Disconnect auto amp. harness connector.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to
ATC-42, "FUNCTION CONFIRMATION PRO-
and perform self-diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG
>> Repair harness or connector.
COMPONENT INSPECTION
In-vehicle Sensor
After disconnecting in-vehicle sensor harness connector, measure
resistance between terminals 1 and 2 at sensor harness side, using
the table below.
If NG, replace in-vehicle sensor.
Terminal
Continuity
(+)
(-)
In-vehicle
sensor con-
nector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M86
1 (OR/L)
M110
3 (OR/L)
Yes
RJIA0813E
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
RJIA2329E
ATC-100
TROUBLE DIAGNOSIS
Sunload Sensor Circuit
EJS0037I
COMPONENT DESCRIPTION
The sunload sensor is located on the instrument mask. It detects
sunload 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.
RJIA2330E
RJIA0814E
Terminal
Voltage
(+)
(-)
Sunload sensor
connector
Terminal No. (Wire
color)
M105
1 (OR)
Ground
Approx. 5V
RJIA0563E
TROUBLE DIAGNOSIS
ATC-101
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D
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H
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M
A
B
ATC
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
ATC-100, "Sunload Sensor Circuit"
.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to
ATC-42, "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-42, "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
ATC-42, "FUNCTION CONFIRMATION PRO-
and perform self-diagnosis STEP-2. Con-
firm 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)
M105
2 (B/Y)
M110
11 (B/Y)
Yes
RJIA0815E
Terminal
Continuity
(+)
(-)
Sunload sen-
sor connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M105
1 (OR)
M110
12 (OR)
Yes
RJIA0816E
ATC-102
TROUBLE DIAGNOSIS
COMPONENT INSPECTION
Sunload Sensor
Measure voltage between auto amp. terminal 12 (OR) and ground.
If NG, replace auto amp.
●
When checking sunload sensor, select a place where sun shines directly on it.
RJIA2331E
SHA930E
TROUBLE DIAGNOSIS
ATC-103
C
D
E
F
G
H
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L
M
A
B
ATC
Intake Sensor Circuit
EJS0037J
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
−
15 (5)
12.34
−
10 (14)
9.62
−
5 (23)
7.56
0 (32)
6.00
5 (41)
4.80
10 (50)
3.87
15 (59)
3.15
20 (68)
2.57
25 (77)
2.12
30 (86)
1.76
35 (95)
1.47
40 (104)
1.23
45 (113)
1.04
RJIA0166E
RHA056GA
Terminal
Voltage
(+)
(-)
Intake sensor
connector
Terminal No.
(Wire color)
M103
1 (OR/B)
Ground
Approx. 5V
RJIA0819E
ATC-104
TROUBLE DIAGNOSIS
2.
CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AUTO AMP.
Disconnect auto amp. harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK INTAKE SENSOR
Refer to
.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to
ATC-42, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NG
>> 1. Replace intake sensor.
2. Go to
ATC-42, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
4.
CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AUTO AMP.
Disconnect auto amp. harness connector.
OK or NG
OK
>> 1. Replace auto amp.
2. Go to
ATC-42, "FUNCTION CONFIRMATION PRO-
and perform self-diagnosis STEP-2. Con-
firm that code No. 20 is displayed.
NG
>> Repair harness or connector.
Multiplex Communication Circuit
EJS0037K
DIAGNOSTIC PROCEDURE FOR MULTIPLEX COMMUNICATION CIRCUIT
SYMPTOM:
●
A/C system cannot be controlled.
Terminal
Continuity
(+)
(-)
Intake sensor
connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M103
2 (B/Y)
M110
11 (B/Y)
Yes
RJIA0820E
Terminal
Continuity
(+)
(-)
Intake sensor
connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M103
1 (OR/B)
M110
1 (OR/B)
Yes
RJIA0821E
RJIA1716E
TROUBLE DIAGNOSIS
ATC-105
C
D
E
F
G
H
I
K
L
M
A
B
ATC
1.
CHECK FOR AUTO AMP. OUTPUT
Confirm multiplex communication signal using an oscilloscope.
OK or NG
OK
>> GO TO 2.
NG
>> Replace auto amp.
Terminal
Voltage
Auto amp.
connector
Terminal No.
(Wire color)
M75
9 (L/W)
20 (L)
RJIA0212E
HAK0363D
ATC-106
TROUBLE DIAGNOSIS
2.
CHECK CIRCUIT CONTINUITY BETWEEN AUTO AMP. AND DISPLAY UNIT (AV AND NAVI CON-
TROL UNIT)
Disconnect AV and NAVI control unit (display unit) and auto amp. connector.
Without navigation system
With navigation system
OK or NG
OK
>> Reconnect display unit (or AV and NAVI control unit) and auto amp. connector. And GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK FOR AUTO AMP. INPUT
Confirm multiplex communication signal using an oscilloscope.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 4.
Terminal
Continuity
(+)
(-)
Display unit
connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M96
15 (L/W)
M110
9 (L/W)
Yes
13 (L)
20 (L)
Terminal
Continuity
(+)
(-)
AV and NAVI
control unit con-
nector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
B63: LHD mod-
els
B115: RHD
models
44 (L/W)
M110
9 (L/W)
Yes
45 (L)
20 (L)
RJIA2352E
Terminal
Voltage
Auto amp.
connector
Terminal No.
(Wire color)
M110
10 (L/R)
RJIA0213E
TROUBLE DIAGNOSIS
ATC-107
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D
E
F
G
H
I
K
L
M
A
B
ATC
4.
CHECK CIRCUIT CONTINUITY BETWEEN DISPLAY UNIT (OR AV AND NAVI CONTROL UNIT) AND
AUTO AMP.
Disconnect display unit (or AV and NAVI control unit) and auto amp. connector.
Without navigation system
With navigation system
OK or NG
OK
>> Replace auto amp.
NG
>> Repair harness or connector.
RJIA2353E
Terminal
Continuity
(+)
(-)
Display unit
connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
M96
14 (L/R)
M110
10 (L/R)
Yes
Terminal
Continuity
(+)
(-)
AV and NAVI
control unit
connector
Terminal No.
(Wire color)
Auto amp.
connector
Terminal No.
(Wire color)
B63: LHD
models
B115: RHD
models
43 (L/R)
M110
10 (L/R)
Yes
ATC-108
CONTROLLER
CONTROLLER
PFP:27500
Removal and Installation
EJS0030S
1.
Remove cluster lid C. Refer to BT-22, "INSTRUMENT PANEL ASSEMBLY".
2.
Remove harness connectors.
3.
Remove multifunction switch.
AUTO AMP
ATC-109
C
D
E
F
G
H
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K
L
M
A
B
ATC
AUTO AMP
PFP:27760
REMOVAL AND INSTALLATION
EJS0030T
1.
Remove the instrument lower assist panel.
2.
Remove the auto amp. fixing screw.
3.
Disconnect the auto amp. connector, then remove the auto amp.
RJIA0190E
ATC-110
AMBIENT SENSOR
AMBIENT SENSOR
PFP:27722
Removal and Installation
EJS0030U
1.
Remove front grille (left). Refer to BT-7, “BODY FRONT END”.
2.
Disconnect ambient sensor connector.
3.
Remove the ambient sensor.
RJIA2326E
IN-VEHICLE SENSOR
ATC-111
C
D
E
F
G
H
I
K
L
M
A
B
ATC
IN-VEHICLE SENSOR
PFP:27720
Removal and Installation
EJS0030V
1.
Remove cluster lid C. Refer to BT-22, “INSTRUMENT PANEL
ASSEMBLY”.
2.
Remove the in-vehicle sensor.
RJIA2332E
ATC-112
SUNLOAD SENSOR
SUNLOAD SENSOR
PFP:27721
Removal and Installation
EJS0030W
1.
Remove instrument mask (passenger side).
2.
Remove the sunload sensor.
RJIA2330E
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