Infiniti G35 (V35). Manual — part 103
TROUBLE DIAGNOSIS
ATC-83
C
D
E
F
G
H
I
K
L
M
A
B
ATC
SYSTEM DESCRIPTION
Display and A/C auto amp. controls compressor operation by ambient temperature, intake air temperature and
signal from ECM.
Low Temperature Protection Control
Display and A/C auto amp. will turn the compressor ON or OFF as determined by a signal detected by ambi-
ent sensor and intake sensor.
When ambient temperature is higher than
−
2
°
C (28
°
F), the compres-
sor turns ON. The compressor turns OFF when ambient temperature
is lower than
−
5
°
C (23
°
F).
When intake air temperature is higher than 1
°
C (34
°
F), the compres-
sor turns ON. The compressor turns OFF when intake air tempera-
ture is lower than
−
5
°
C (23
°
F).
DIAGNOSIS PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
RHA094GB
SJIA0267E
SJIA1298E
ATC-84
TROUBLE DIAGNOSIS
1.
CHECK AMBIENT SENSOR CIRCUIT AND INTAKE SENSOR CIRCUIT
Check ambient sensor and intake sensor. Refer to
ATC-52, "FUNCTION CONFIRMATION PROCEDURE"
,
see Nos. 10 and 12.
OK or NG
OK
>> GO TO 2.
NG
>>
●
Malfunctioning ambient sensor: Refer to
ATC-100, "Ambient Sensor Circuit"
●
Malfunctioning intake sensor: Refer to
ATC-109, "Intake Sensor Circuit"
.
2.
PERFORM AUTO ACTIVE TEST
Refer to
.
Does the magnet clutch operate?
YES
>>
●
WITH CONSULT-II: GO TO 5.
●
WITHOUT CONSULT-II: GO TO 6.
NO
>> Check 10A fuse (No. 79, located in IPDM E/R), and GO TO 3. Refer to
.
3.
CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector and compressor connector.
3.
Check continuity between IPDM E/R harness connector E8 ter-
minal 33 and compressor harness connector F24 terminal 1.
OK or NG
OK
>> GO TO 4.
NG
>> Repair harness or connector.
4.
CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK
>> 1. Replace IPDM E/R.
2. Go to self-diagnosis procedure
diagnosis STEP-4. Confirm that magnet clutch opera-
tion normal.
NG
>> 1. Replace magnet clutch.
2. Go to self-diagnosis procedure
diagnosis STEP-4. Confirm that magnet clutch operation normal.
33 – 1
: Continuity should exist.
RJIA2004E
RJIA2005E
TROUBLE DIAGNOSIS
ATC-85
C
D
E
F
G
H
I
K
L
M
A
B
ATC
5.
CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
Check compressor ON/OFF signal. Refer to
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 6.
6.
CHECK CIRCUIT CONTINUITY BETWEEN BCM AND DISPLAY AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and display and A/C auto amp. con-
nector.
3.
Check continuity between BCM harness connector M1 terminal
27 and display and A/C auto amp. harness connector M31 ter-
minal 31.
OK or NG
OK
>> GO TO 7.
NG
>> Repair harness or connector.
7.
CHECK VOLTAGE FOR DISPLAY AND A/C AUTO AMP. (COMPRESSOR ON SIGNAL)
1.
Reconnect BCM connector and display and A/C auto amp. con-
nector.
2.
Turn ignition switch ON.
3.
Check voltage between display and A/C auto amp. harness con-
nector M31 terminal 31 and ground.
OK or NG
OK
>> GO TO 8.
NG-1
>> If the voltage is approx. 5 V when A/C switch is ON: Replace display and A/C auto amp.
NG-2
>> If the voltage is approx. 0 V when A/C switch is OFF: Replace BCM.
A/C SW ON
: AIR COND SW ON
A/C SW OFF
: AIR COND SW OFF
RJIA1111E
27 – 31
: Continuity should exist.
RJIA3514E
Terminals
Condition
Voltage
(+)
(
−
)
Display and A/C
auto amp.
connector
Terminal No.
M31
31 Ground
A/C switch: ON
(Blower motor
operates.)
Approx. 0 V
OFF switch: ON
(A/C system:
OFF)
Approx. 5 V
RJIA3515E
ATC-86
TROUBLE DIAGNOSIS
8.
CHECK REFRIGERANT PRESSURE SENSOR
WITH CONSULT-II
1.
Start the engine.
2.
Check the voltage of refrigerant pressure sensor. Refer to
EC-135, "CONSULT-II Reference Value in Data
.
WITHOUT CONSULT-II
1.
Start the engine.
2.
Check voltage between ECM harness connector F108 terminal
70 and ground.
OK or NG
OK
>>
●
WITH CONSULT-II: GO TO 9.
●
WITHOUT CONSULT-II: GO TO 10.
NG
>> Refer to
EC-678, "REFRIGERANT PRESSURE SENSOR"
9.
CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal. Refer to
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 10.
10.
CHECK CIRCUIT CONTINUITY BETWEEN BCM AND DISPLAY AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and display and A/C auto amp. con-
nector.
3.
Check continuity between BCM harness connector M1 terminal
28 and display and A/C auto amp. harness connector M31 ter-
minal 9.
OK or NG
OK
>> GO TO 11.
NG
>> Repair harness or connector.
Terminals
Condition
Voltage
(+)
(
−
)
ECM
connector
Terminal No.
F108
70
Ground
A/C switch: ON
(Blower motor
operates.)
Approx. 1.0 -
4.0 V
PBIB1188E
FAN SW ON
: FAN ON SIG ON
FAN SW OFF
: FAN ON SIG OFF
RJIA1111E
28 – 9
: Continuity should exist.
RJIA3516E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст