2008 INFINITI FX35 Service Manual

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Page 473 of 3924

INFINITI FX35 2008 Service Manual
ATC-68
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
2. Check continuity between blower motor harness connector M78terminal 2 and unified meter and A/C amp. harness connector
M57 terminal 53.
OK or NG
OK

Page 474 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISATC-69
< SERVICE INFORMATION >
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Confirm smooth rotation of the blower motor.
Ensure that there are no foreign particles inside the blower unit.
Mag

Page 475 of 3924

INFINITI FX35 2008 Service Manual
ATC-70
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SYSTEM DESCRIPTION
Unified meter and A/C amp. controls compressor operation by ambient temperature, intake air temperature
and signal from ECM.
Low Te

Page 476 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISATC-71
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 2.
NG >> Malfunctioning ambient sensor: Refer to ATC-86, "
Ambient Sensor Circuit".
Malfunc

TROUBLE DIAGNOSISATC-71
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 2.
NG >> Malfunctioning ambient sensor: Refer to ATC-86, "
Ambient Sensor Circuit".
Malfunctioning intake sensor: Refer to ATC-94, "
Intake Sensor Circuit".
2.PERFORM IPDM E/R AUTO ACTIVE TEST
Perform “IPDM E/R auto active test”. Refer to PG-20, "
Auto Active Test".
Does the magnet clutch operate?
YES >> WITH CONSULT-III: GO TO 5 WITHOUT CONSULT-III: GO TO 6.
NO >> Check 10A fuse (No. 79, located in IPDM E/R). Refer to PG-23, "
IPDM E/R Terminal Arrange-
ment", and GO TO 3.
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 F2 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 ATC-43, "
Self-Diag-
nosis Function" and perform self-diagnosis STEP-4.
Confirm that magnet clutch operation normal.
NG >> 1. Replace magnet clutch.
2. Go to self-diagnosis procedure ATC-43, "
Self-Diag-
nosis Function" and perform self-diagnosis STEP-4.
Confirm that magnet clutch operation normal.
5.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
Check compressor ON/OFF signal in “Data monitor”. Refer to ATC-32, "
CONSULT-III Function".
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
6.CHECK CIRCUIT CONTINUITY BETWEEN BC M AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect BCM connector and unified meter and A/C amp. connector.
33 – 1 : Continui ty should exist.
RJIA2004E
RJIA2005E
A/C SW ON : AIR COND SW ON
A/C SW OFF : AIR COND SW OFF
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 477 of 3924

INFINITI FX35 2008 Service Manual
ATC-72
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
3. Check continuity between BCM harness connector M3 terminal27 and unified meter and A/C amp. harness connector M57 ter-
minal 42.
OK or NG
OK >> GO

Page 478 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISATC-73
< SERVICE INFORMATION >
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2. Check voltage between ECM harness connector F101 terminal 70 and ground.
OK or NG
OK >> WITH CONSULT-III: GO TO

Page 479 of 3924

INFINITI FX35 2008 Service Manual
ATC-74
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
OK or NG
OK >> GO TO 12.
NG-1 >> If the voltage is approx. 5 V when blower motor is ON: Replace unified meter and A/C amp.
NG-2 >> If the voltage is a

Page 480 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISATC-75
< SERVICE INFORMATION >
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Insufficient CoolingINFOID:0000000001328191
SYMPTOM: Insufficient cooling
INSPECTION FLOW
*1 AT C - 4 3 , "Self-Diag

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