fuse INFINITI FX35 2008 Service Manual

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
< SERVICE INFORMATION > [ICC]
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2. Check continuity between ICC brake hold relay harness connec- tor and ICC brake switch harness connector.
3. Check continuity between ICC brake hold relay harness connec- tor and ground.
OK or NG
OK >> GO TO 7.
NG >> 1. Repair harness between ICC brake hold relay and ICC brake switch. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
7.CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1. Disconnect ECM connector.
2. Check continuity between ICC unit harness connector and ICC brake hold relay harness connector.
3. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 8.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
8.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ICC brake switch harness connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
NG >> 1. Repair or replace harness or fuse. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
9.CHECK STOP LAMP ILLUMINATION
ICC brake hold
relay connector Te r m i n a lICC brake switch
connector Terminal Continuity
E14 3 E209 2 Yes
ICC brake hold
relay connector Te r m i n a l
Ground Continuity
E14 3 No
PKIB4167E
ICC unit connector Terminal ICC brake hold relay
connector Terminal Continuity
M89 29 E14 4 Yes
ICC unit connector Terminal GroundContinuity
M89 29 No
SKIA5980E
ICC brake switch connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
E209 1 Ground Battery voltage
PKIB4168E
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
< SERVICE INFORMATION > [ICC]
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Check continuity between ICC brake hold relay harness connector
and ground.
OK or NG
OK >> GO TO 14.
NG >> 1. Repair harness between ICC brake hold relay and ground.
2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
14.CHECK ICC BRAKE HOLD RELAY
Check ICC brake hold relay. Refer to ACS-64, "
ICC Brake Hold Relay".
OK or NG
OK >> GO TO 15.
NG >> 1. Replace ICC brake hold relay. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
15.CHECK ICC UNIT ST ANDARD VOLTAGE
1. Connect ICC unit connector and stop lamp switch connector.
2. Perform “Active Test” (“STOP LAMP”: “STP LMP DRIVE ON”) with CONSULT-III, check vo ltage between ICC unit harness
connector and ground.
OK or NG
OK >> GO TO 16.
NG >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
16.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
Check voltage between ICC brake hold relay harness connector and
ground.
OK or NG
OK >> GO TO 17.
NG >> 1. Repair or replace harness or fuse. 2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
17.CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
ICC brake hold re- lay connector Te r m i n a l
Ground Continuity
E14 2 Yes
SKIA6661E
ICC unit
connector Te r m i n a l
ConditionVoltage (Ap-
prox.)
(+) ( −)
M89 47 Ground During “Active Test” 12 V
SKIA3075E
ICC brake hold relay con- nector Te r m i n a l
Voltage (Ap-
prox.)
(+) ( −)
E14 6 Ground Battery voltage
SKIA1198E
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ACS-60
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Possible Irregular Condition
1.CHECK FUSES
Check that any of the fuses is blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK ICC SYSTEM DISPLAY
1. Turn ignition switch ON.
2. Check if all displays illuminate.
Do all displays illuminate?
YES >> GO TO 3.
NO >> GO TO 6.
3.CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and check terminals for bend and looseness.
3. Check continuity between ECM harness connector terminals.
Open or short lines Symptoms Malfunction causes
ICC unit power supply malfunction No voltage supply from ignition switch Fuse blown Harness open
Harness shorted
Ground cable not connected Harness open Harness shorted
ICC steering switch malfunction No signal transmitted Harness open Harness shorted
Spiral cable open
Spiral cable shorted
Switch or ECM malfunction
CAN communication system malfunction Signal not transmitted Harness open Harness shorted
CAN communication outside the standard.
Combination meter system malfunction Indication not possible Indicator display malfunction ICC system display segments disappear.
ICC unit malfunction ICC unit internal malfunction.
Unit Power source Fuse No.
ICC unit Ignition switch (ON) 12
Battery 35
ECM connector Terminal Condition Resistance
(Approx.)
M90 82 99 When MAIN switch pressed 0
Ω
When MAIN switch released 5.5 k Ω
PKIB4145E
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MAIN POWER SUPPLY AND GROUND CIRCUITAT-161
< SERVICE INFORMATION >
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TCM terminals and data are reference valu e. Measured between each terminal and ground.
Diagnosis ProcedureINFOID:0000000001327352
1.CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector.
3. Check voltage between A/T assembly harness connector termi- nals and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK TCM POWER SOURCE STEP 2
1. Disconnect A/T assembly harness connector.
2. Turn ignition switch ON.
3. Check voltage between A/T assembly harness connector termi- nals and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING ITEM
Check the following.
 Harness for short or open between battery and A/T assembly harness connector F44 terminals 1, 2
 Harness for short or open between ignition switch and A/T assembly harness connector F44 terminal 6
 10 A fuse (No. 37, located in the fuse and fusible link block) and 10 A fuse (No. 83, located in the IPDM E/R)
 Ignition switch, Refer to PG-3
.
OK or NG
OK >> GO TO 4.
Te r m i n a l Wire
color Item Condition Data (Approx.)
1LG Power supply
(Memory back-up) Always Battery voltage
2LG Power supply
(Memory back-up)
Always Battery voltage
5 B Ground Always 0 V
6YPower supply – Battery voltage
–0 V
10 B Ground Always 0 V
Item Connector Terminal Voltage
TCM F44 1 - Ground
Battery voltage
2 - Ground
6 - Ground 0 V
SCIA2104E
Item Connector Terminal Voltage
TCM F44 1 - Ground
Battery voltage
2 - Ground
6 - Ground
SCIA2105E
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A/T SHIFT LOCK SYSTEMAT-211
< SERVICE INFORMATION >
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3. Check continuity between stop lamp switch harness connector E210 terminals 3 and 4.
Check stop lamp switch after adjusting brake pedal — refer to
BR-5
.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.DETECT MALFUNCTIONING ITEM
Check the following items. If any items are damaged, repair or replace damaged parts.
 Harness for short or open between ignition switch and stop lamp switch harness connector E210 terminal 3.
 Harness for short or open between stop lamp switch harness connector E210 terminal 4 and A/T device har-
ness connector M67 terminal 1.
 10 A fuse [No.12, located in the fuse block (J/B)].
 Ignition switch, Refer to PG-3
.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
7.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness connector M67 terminal 2 and ground.
OK or NG
OK >> Replace shift lock solenoid and park position switch assembly.
NG >> Repair open circuit in harness or connectors.
Condition Continuity
When brake pedal is depressed Yes
When brake pedal is released No
SCIA2126E
Continuity should exist.
SCIA2125E
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ATC-8
< SERVICE INFORMATION >
PRECAUTIONS
VK45DE
CAUTION:
The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. If a wrong O- ring is installed, refrigerant may leak at the con-
nection.
O-Ring Part Numbers and Specifications
WARNING:
Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loo sen the discharge side hose fitting and remove it.
SJIA1774E
Connection type Piping connection point Part number QTY O-ring size
New Low-pressure pipe 1 to low-pressure pipe 2 (One-touch joint) 92473 N8221 2 16
Low-pressure pipe 2 to expansion valve 92473 N8210 1 16
High-pressure pipe 1 to high-pressure pipe 2 (One-touch joint) 92471 N8221 2 8
High-pressure pipe 3 to expansion valve 92471 N8210 1 8
High-pressure pipe 2 to high-pressure pipe 3 (One-touch joint) 92471 N8221 2 8
Condenser to high-pressure flexible hose (One-touch joint) 92472 N8221 2 12
Condenser to high-pressure pipe 1 (One-touch joint) 92471 N8221 2 8
Low-pressure flexible hose to low-pressure pipe 1 (One-touch joint) 92473 N8221 2 16
Low-pressure pipe to low-pressure flexible hose (VK45DE) 92474 N8210 1 19
Compressor to low-pressure flexible hose (VQ35DE) 92474 N8210 1 19
Compressor to low-pressure pipe (VK45DE) 92474 N8210 1 19
Compressor to high-pressure flexible hose 92472 N8210 1 12
Liquid tank to condenser pipe
Inlet
92471 N8210 1
8
Outlet 1
Former Refrigerant pressure sensor to condenser J2476 89956 1 10
Expansion valve to evaporator
Inlet 92475 71L00 1 12
Outlet 92475 72L00 1 16
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TROUBLE DIAGNOSISATC-53
< SERVICE INFORMATION >
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The PTC is built into the A/C and AV switch. It can be set at an inter-
val of 0.5 °C (1.0 °F) in the 18 °C (60 °F) to 32 °C (90 °F) temperature
range by pressing temperature cont rol switch. The set temperature
is displayed.
DIAGNOSIS PROCEDURE FOR A/C SYSTEM
SYMPTOM: A/C system does not activate.
1.CHECK POWER SUPPLY CIRCUIT FO R UNIFIED METER AND A/C AMP.
1. Disconnect unified meter and A/C amp. connector.
2. Check voltage between unified meter and A/C amp. harness connector M56 terminals 21, 22 and 35, unified meter and A/C
amp. harness connector M57 terminal 46 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check 10A and 15A fuses [Nos. 6, 10, 11, 12 and 19, located in the fuse block (J/B)]. Refer to
PG-77
.
 If fuses are OK, check harness for open circuit. Repair or replace if necessary.
 If fuses are NG, check harness fo r short circuit and replace fuse.
2.CHECK GROUND CIRCUIT FOR UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
SJIA1583E
RJIA1983E
Terminals Ignition switch position
(+)
(− )OFFACC ON
Unified
meter and A/C amp.
connector Te r m i n a l N o .
M56 21
GroundBattery volt-
age Battery
voltage Battery
voltage
M56 22 Approx. 0 V Approx. 0 V Battery
voltage
M56 35 Approx. 0 V Battery
voltage Battery
voltage
M57 46 Approx. 0 V Battery
voltage Battery
voltage
RJIA1984E
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TROUBLE DIAGNOSISATC-67
< SERVICE INFORMATION >
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COMPONENT DESCRIPTION
Brush-Less Motor
The blower motor utilizes a brush-less motor with a rotating magnet.
Quietness is improved over previous motors where the brush was
the point of contact and the coil rotated.
DIAGNOSIS PROCEDURE FOR BLOWER MOTOR
SYMPTOM: Blower motor operation is malfunctioning.
1.CHECK POWER SUPPLY FOR BLOWER MOTOR
1. Disconnect blower motor connector.
2. Turn ignition switch ON.
3. Check voltage between blower motor harness connector M78 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 15A fuses [Nos. 10 and 11, located in the fuse block (J/B)]. Refer to PG-
77.
 If fuses are OK, check harness for open circuit. Repair or replace if necessary.
 If fuses are NG, check harness fo r short circuit and replace fuse.
2.CHECK BLOWER MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between blower motor harness connector M78 terminal 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND UNIFIED METER AND A/C AMP.
1. Disconnect unified meter and A/C amp. connector.
ZHA152H
SJIA0266E
1 – Ground : Battery voltage
RJIA1997E
3 – Ground : Continuity should exist.
RJIA1998E
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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
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TROUBLE DIAGNOSISATC-81
< SERVICE INFORMATION >
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DIAGNOSIS PROCEDURE FOR INSUFFICIENT COOLING
SYMPTOM: Insufficient cooling
1.CHECK POWER SUPPLY FOR ECV (ELECTRONIC CONTROL VALVE)
1. Disconnect compressor (ECV) connector.
2. Turn ignition switch ON.
3. Check voltage between compressor (ECV) harness connector F6 terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 10A fuse [No. 12, located in the fuse block (J/B)]. Refer to PG-77
.
 If fuse is OK, check harness for open circuit. Repair or replace if necessary.
 If fuse is NG, check harness for short circuit and replace fuse.
2.CHECK ECV CONTROL SIGNAL
1. Turn ignition switch OFF.
2. Reconnect compressor (ECV) connector.
3. Perform self-diagnosis. Refer to ATC-43, "
Self-Diagnosis Function".
4. Set in self-diagnosis STEP-4 (Code No. 45). Refer to ATC-43, "
Self-Diagnosis Function".
5. Confirm ECV control signal between unified meter and A/C amp. harness connector M57 terminal 45 and ground using an oscillo-
scope.
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side becomes nega-
tive. Liquid tank or front/rear side of
expansion valve’s pipe is frost-
ed or wet with dew.High-pressure side is closed
and refrigerant does not flow.
↓
Expansion valve or liquid tank
is frosted.Leave the system at rest until
no frost is present. Start it
again to check whether or not
the malfunction is caused by
water or foreign particles.
 If water is the cause, initially
cooling is okay. Then the wa-
ter freezes causing a block-
age. Drain water from
refrigerant or replace refrig-
erant.
 If due to foreign particles, re-
move expansion valve and
remove the particles with dry
and compressed air (not
shop air).
 If either of the above meth- ods cannot correct the mal-
function, replace expansion
valve.
 Replace liquid tank.
 Check lubricant for contami-
nation.
AC362A
2 – ground : Battery voltage
RJIA2294E
RJIA2295E
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