ignition switch INFINITI FX35 2008 Service Manual

TROUBLE DIAGNOSISATC-87
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SYMPTOM: Ambient sensor circuit is open or shorted. (21 or −21 is
indicated on unified meter and A/C amp. as a result of performing
self-diagnosis STEP-2.)
1.CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
1. Disconnect ambient sensor connector.
2. Turn ignition switch ON.
3. Check voltage between ambient sensor harness connector E34 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETW EEN AMBIENT SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between am bient sensor harness connector
E34 terminal 2 and unified meter and A/C amp. harness connec-
tor M57 terminal 49.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK AMBIENT SENSOR
Refer to "Ambient Sensor".
OK or NG
OK >> 1. Replace unified meter and A/C amp. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG >> 1. Replace ambient sensor.
2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BET WEEN AMBIENT SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
RJIA1461E
1 – Ground : Approx. 5 V
RJIA2017E
2 – 49 : Continuity should exist.
RJIA2018E
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TROUBLE DIAGNOSISATC-89
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Aspirator
The aspirator is located on driver’s side of heater & cooling unit
assembly. It produces vacuum pr
essure due to air discharged from
the heater & cooling unit assembly, continuously taking compartment
air in the aspirator.
DIAGNOSIS PROCEDURE FOR IN-VEHICLE SENSOR
SYMPTOM: In-vehicle sensor circ uit is open or shorted. (22 or −22 is
indicated on unified meter and A/C amp. as a result of performing
self-diagnosis STEP-2.)
1.CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND
1. Disconnect in-vehicle sensor connector.
2. Turn ignition switch ON.
3. Check voltage between in-vehicle sensor harness connector M46 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
RJIA0921E
RJIA1804E
RJIA1452E
1 – Ground : Approx. 5 V
RJIA2022E
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ATC-90
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
3. Check continuity between in-vehicle sensor harness connectorM46 terminal 2 and unified meter and A/C amp. harness con-
nector M57 terminal 49.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK IN-VEHICLE SENSOR
Refer to "In-vehicle Sensor".
OK or NG
OK >> 1. Replace unified meter and A/C amp. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG >> 1. Replace in-vehicle sensor.
2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BETW EEN IN-VEHICLE SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between in-vehicle sensor harness connector M46 terminal 1 and unified meter and A/C amp. harness con-
nector M57 terminal 40.
4. Check continuity between in-vehicle sensor harness connector M46 terminal 1 and ground.
OK or NG
OK >> 1. Replace unified meter and A/C amp. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG >> Repair harness or connector.
COMPONENT INSPECTION
In-vehicle Sensor
2 – 49 : Continuity should exist.
RJIA2023E
1 – 40 : Continuity should exist.
1 – Ground : Continuity should not exist.
RJIA2024E
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ATC-92
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SYMPTOM: Sunload sensor circuit is open or shorted. (25 or −25 is
indicated on unified meter and A/C amp. as a result of performing
self-diagnosis STEP-2.)
1.CHECK VOLTAGE BETWEEN S UNLOAD SENSOR AND GROUND
1. Disconnect sunload sensor connector.
2. Turn ignition switch ON.
3. Check voltage between sunload sensor harness connector M87 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between sunload sensor harness connector M87 terminal 2 and unified meter and A/C amp. harness con-
nector M57 terminal 49.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK SUNLOAD SENSOR
1. Reconnect sunload sensor connector and unified meter and A/C amp. connector.
2. Refer to "Sunload Sensor".
OK or NG
OK >> 1. Replace unified meter and A/C amp. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG >> 1. Replace sunload sensor. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
RJIA1455E
1 – Ground : Approx. 5 V
RJIA2027E
2 – 49 : Continuity should exist.
RJIA2028E
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ATC-94
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
 When checking sunload sensor, select a place where sunshine directly on it.
If NG, replace sunload sensor.
Intake Sensor CircuitINFOID:0000000001328199
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on t he heater & cooling unit assembly. It
converts temperature of air after it passes through the evaporator
into a resistance value which is then input to the unified meter and A/
C amp.
DIAGNOSIS PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. (24 or −24 is
indicated on unified meter and A/C amp. as a result of performing
self-diagnosis STEP-2.)
1.CHECK VOLTAGE BETWEEN IN TAKE SENSOR AND GROUND
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
SHA930E
RJIA0928E
RJIA1458E
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TROUBLE DIAGNOSISATC-95
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3. Check voltage between intake sensor harness connector M254 terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between intake sensor harness connector M254 terminal 1 and unified meter and A/C amp. harness con-
nector M57 terminal 49.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK INTAKE SENSOR
Refer to "Intake Sensor".
OK or NG
OK >> 1. Replace unified meter and A/C amp. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG >> 1. Replace intake sensor. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between intake sensor harness connector M254 terminal 2 and unified meter and A/C amp. harness con-
nector M57 terminal 41.
4. Check continuity between intake sensor harness connector M254 terminal 2 and ground.
OK or NG
OK >> 1. Replace unified meter and A/C amp. 2. Go to self-diagnosis ATC-43, "
Self-Diagnosis Function" and perform self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG >> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
2 – Ground : Approx. 5 V
RJIA2031E
1 – 49 : Continuity should exist.
RJIA2032E
2 – 41 : Continuity should exist.
2 – Ground : Continuity should not exist.
RJIA2033E
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AUDIOAV-5
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AUDIO
System DescriptionINFOID:0000000001328672
AUDIO SYSTEM
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
 through 15A fuse (No. 32, located in the fuse and fusible link block)
 to audio unit terminal 6
 to A/C and AV switch terminal 1
 to display control unit terminal 1
 to woofer terminal 1
 to satellite radio tuner terminal 12 (With satellite radio) and
 to option connector–2 for satellite radio tuner terminal 12 (Without satellite radio),
 through 20A fuse [No.17, located in the fuse block (J/B)]
 to BOSE speaker amp. terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
 through 10A fuse [No. 6, located in the fuse block (J/B)]
 to audio unit terminal 10
 to A/C and AV switch terminal 2
 to display control unit terminal 10
 to satellite radio tuner terminal 16 (With satellite radio) and
 to option connector–2 for satellite radio t uner terminal 11 (Without satellite radio).
Ground is supplied through the case of the audio unit.
Ground is also supplied
 to BOSE speaker amp. terminal 17
 to woofer terminal 2
 to satellite radio tuner terminal 15 (With satellite radio) and
 to option connector–2 for satellite radio receiver terminal 10 (Without satellite radio)
 through body ground B203 and B210,
 to A/C and AV switch terminal 5
 to display control unit terminals 3,13 and
 to display terminal 1
 through body ground M35, M45 and M85.
Audio unit, A/C and audio controller are c onnected by FPC (Flexible Print Circuit).
A/C and audio controller integrates A/C switches and audio switches.
When A/C and audio controller is pressed to audio swit ch, it sends audio signal to audio unit. Then audio sig-
nals are supplied
 through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16
 to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29, and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied
 through BOSE speaker amp. terminals 2, 3, 4, 9,10,11,12, 13, 14, 15, 16, 18, 19 and 20
 to terminals 1 and 2 of front door speaker LH and RH
 to terminals 1 and 2 of rear door speaker LH and RH
 to terminals 1 and 2 of tweeter LH and RH
 to terminals 1 and 2 of instrument speaker LH, RH, and CENTER, and
 to terminals 7 and 8 of woofer.
When one of audio steering wheel switch is press ed to ON (With telephone system), mode ON (Without
telephone system), seek up, or volume up, resistanc e in steering switch circuit changes depending on which
button is pressed.
When one of audio steering wheel switch is pressed to mode ON (With telephone system), power ON (Without
telephone system), seek down, or volume down, resi stance in audio steering wheel switch circuit changes
depending on which button is pressed.
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system gone up and down automatical ly in proportion to the vehicle speed. And the con-
trol level can be selected by the customer.
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AV-28
< SERVICE INFORMATION >
AUDIO
Terminal and Reference Value for Audio Unit
INFOID:0000000001328678
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
2 (W) 1 (B) Audio signal front LH Output ACC Receive audio signal
4 (G) 3 (R) Audio signal front RH Output ACC Receive audio signal
5 (R/W) Ground Antenna amp. ON
signal
Output ACC — Approx. 12 V
6 (W/L) Ground Battery power supply Input OFF — Battery voltage 9—Shield —— — —
10 (LG) Ground ACC power supply Input ACC — Battery voltage 11 — S h i e l d — — — —
12 (G/W) Ground BOSE speaker amp.
ON signal Output ACC — Approx. 12 V
14 (BR) 13 (Y) Audio signal rear LH Output ACC Receive audio signal
16 (L) 15 (P) Audio signal rear RH Output ACC Receive audio signal
21 (PU) Ground Communication signal
(AUDIO-DCU) Output ACCOperate audio volume
switch
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3606E
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AUDIOAV-29
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22 (W/L) Ground Vehicle speed signal
(2 pulse) Input ONWhen vehicle speed is ap-
prox. 40 km/h (25 MPH)
23 (LG) Ground Communication signal
(DCU-AUDIO)
Input ACCOperate audio volume
switch
25 — Shield — — — —
46 (B)* 45 (R)* Satellite radio audio
signal LH Input ONReceive satellite radio audio
signal
48 (G)* 47 (W)* Satellite radio audio
signal RH Input ON
Receive satellite radio audio
signal
49* — Shield — — — —
52 (L)* Ground Communication signal
REQ (SAT-AUDIO) Input ONWhen setting to satellite ra-
dio mode
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
ELF1080D
SKIB3607E
SKIB3609E
SKIB3609E
SKIB7338E
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AV-30
< SERVICE INFORMATION >
AUDIO
*: With satellite radio
Terminal and Reference Value for BOSE Speaker AmpINFOID:0000000001328679
53 (G)* GroundCommunication signal
Rx (SAT-AUDIO) Input ONWhen setting to satellite ra-
dio mode
54 (Y)* Ground Communication signal
Tx (AUDIO-SAT)
Output ONWhen setting to satellite ra-
dio mode
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
SKIB7337E
SKIB7336E
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
1 (R) Ground Battery power supply Input OFF — Battery voltage
9 (LG) 10 (B/Y) Audio signal rear door-
speaker LH
Output ACC Receive audio signal
11 (OR) 12 (B/P) Audio signal rear door
speaker RH Output ACC Receive audio signal
13 (L) 14 (B/W) Audio signal front door
speaker LH
Output ACC Receive audio signal
SKIB3609E
SKIB3609E
SKIB3609E
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