Infiniti Q45. Manual — part 114
TROUBLE DIAGNOSIS
ATC-51
C
D
E
F
G
H
I
K
L
M
A
B
ATC
10
R
Multiplex communication
signal (Fr RX)
ON
—
11
R/Y
Sensor ground
ON
—
Approx. 0
12
SB
Sunload sensor
—
—
—
15
G
Multiplex communication
signal (Rr RX)
ON
—
16
W/B
Power supply for rear vent
door motor
ON
Rear vent switch: Open
Approx. 12
Rear vent switch: Close
Approx. 0
17
L/OR
Water temperature sensor
—
At idle [after warming up, approx.
80
°
C (176
°
F)]
NOTE:
The waveforms vary depending
on coolant temperature.
18
OR
Compressor feedback sig-
nal (Low-pressure cut)
ON
AUTO SW:
ON (Start
engine)
Blower motor
operates.
Approx. 0
When refrigerant
pressure sensor
connector is dis-
connected
Approx. 5
20
B
Multiplex communication
signal (Fr CLK)
ON
—
21
GY
Power supply for each door
motor
ON
—
Battery voltage
22
Y/B
Compressor ON signal
ON
AUTO switch: ON
(Blower motor operates.)
Approx. 0
AUTO switch: OFF
(A/C system: OFF)
Approx. 5
23
Y
ECV (Electronic Control
Valve) signal
ON
Self-diagnosis: STEP- 4. (Code
No. 42)
25
B
Ground
ON
—
Approx. 0
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage
(V)
RJIA0213E
RJIA0214E
PKIA0098J
HAK0363D
RJIA1563E
ATC-52
TROUBLE DIAGNOSIS
26
Y/G
Power supply for BAT
OFF
—
Battery voltage
27
P
Power supply for IGN
ON
—
Battery voltage
29
SB
Blower motor ON signal
ACC or
ON
AUTO SW: ON (Blower motor
operates.)
Approx. 0
AUTO switch: OFF (A/C system:
OFF)
Approx. 5
30
BR/W
Multiplex communication
signal (Rr CLK)
ON
—
31
GY/L
Multiplex communication
signal (Rr TX)
ON
—
35
L/OR
Blower motor drive signal
ACC or
ON
Blower speed: 1st speed
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage
(V)
HAK0364D
RJIA0215E
SJIA0116J
TROUBLE DIAGNOSIS
ATC-53
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Self-diagnosis Function
NJS0008B
DESCRIPTION
The self-diagnosis system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to appli-
cable sections (items) for details. Shifting from usual control to the self-diagnosis system is accomplished by
starting the engine (turning the ignition switch ON) and pressing OFF switch for at least 5 seconds. The OFF
switch must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system
will be canceled by either pressing AUTO switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished by means of turning temperature dial, as required.
Shifting from STEP-5 to AUXILIARY MECHANISM is accomplished by means of pushing (fan) UP switch.
SJIA1282E
ATC-54
TROUBLE DIAGNOSIS
FUNCTION CONFIRMATION PROCEDURE
1.
SET IN SELF-DIAGNOSIS MODE
1.
Turn ignition switch ON.
2.
Set in self-diagnosis mode as follows. Within 10 seconds after starting engine (ignition switch is turned
ON.), press OFF switch for at least 5 seconds.
CAUTION:
If battery voltage drops below 12 V during diagnosis STEP-3, door motor speed becomes slower
and as a result, the system may generate an error even when operation is normal. To avoid this,
start engine before performing this diagnosis.
>> GO TO 2.
2.
STEP-1: LEDS AND DISPLAY ARE CHECKED
Check LED illumination and display screen.
OK or NG
OK
>> GO TO 3.
NG
>> Malfunctioning OFF switch, LED or auto amp. Refer to
.
3.
CHECK TO ADVANCE SELF-DIAGNOSIS STEP-2
Turn temperature dial (driver side) clockwise.
Advance to self-diagnosis STEP-2?
YES
>> GO TO 4.
NO
>> Replace multifunction switch. (Temperature dial is malfunctioning.)
4.
CHECK TO RETURN SELF-DIAGNOSIS STEP-1
Turn temperature dial (driver side) counterclockwise.
Return to self-diagnosis STEP-1?
YES
>> GO TO 5.
NO
>> Replace multifunction switch. (Temperature dial is malfunctioning.)
RJIA1565E
RJIA1895E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст