2006 INFINITI M35 ground

ATC-120
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
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 M65 terminal 62.
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 ATC-121, "
Sunload Sensor" .
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 5 6 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> 1. Replace sunload sensor.
2. Go to self-diagnosis AT C - 5 6 , "
FUNCTION CONFIRMATION PROCEDURE" 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.
3. Check continuity between sunload sensor harness connector
M87 terminal 1 and unified meter and A/C amp. harness con-
nector M65 terminal 46.
4. Check continuity between sunload sensor harness connector
M87 terminal 1 and ground.
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 5 6 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> Repair harness or connector.2 – 62 : Continuity should exist.
RJIA4100E
1 – 46 : Continuity should exist.
1 – Ground : Continuity should not exist.
RJIA4101E

TROUBLE DIAGNOSIS
ATC-121
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
COMPONENT INSPECTION
Sunload Sensor
Measure voltage between unified meter and A/C amp. harness con-
nector M65 terminal 46 and ground.
When checking sunload sensor, select a place where sun shines directly on it.
If NG, replace sunload sensor.
RJIA4102E
SHA930E

ATC-122
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Intake Sensor CircuitNJS000H3
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the 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 INTAKE SENSOR AND GROUND
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
3. Check voltage between intake sensor harness connector M82
terminal 1 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 M82
terminal 2 and unified meter and A/C amp. harness connector
M65 terminal 59.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
RJIA4103E
RJIA4104E
1 – Ground : Approx. 5 V
RJIA4215E
2 – 59 : Continuity should exist.
RJIA4106E

TROUBLE DIAGNOSIS
ATC-123
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
3. CHECK INTAKE SENSOR
Refer to ATC-123, "
Intake Sensor" .
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 5 6 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> 1. Replace intake sensor.
2. Go to self-diagnosis AT C - 5 6 , "
FUNCTION CONFIRMATION PROCEDURE" 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 M82
terminal 1 and unified meter and A/C amp. harness connector
M65 terminal 43.
4. Check continuity between intake sensor harness connector M82
terminal 1 and ground.
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 5 6 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
After disconnecting intake sensor connector M82, measure resis-
tance between terminals 1 and 2 at sensor side, using the table
below.
If NG, replace intake sensor.1 – 43 : Continuity should exist.
1 – Ground : Continuity should not exist.
RJIA4105E
Temperature C (F) Resistance k
15 (5) 12.34
10 (14) 9.62
5 (23) 7.56
0 (32) 6.00
5 (41) 4.80
10 (50) 3.87
15 (59) 3.15
20 (68) 2.57
25 (77) 2.12
30 (86) 1.76
35 (95) 1.47
40 (104) 1.23
45 (113) 1.04
RJIA4107E

AV-66
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
Revision: 2006 January2006 M35/M45
TERMINALS AND REFERENCE VALUE FOR CONTROL UNITPFP:00000
Audio Unit for Base SystemNKS0048L
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switchOperation
2
(P)
*1
(R/L)*2
3
(W)Audio signal front LH
Output ON Receive audio signal.
4
(V)
*1
(LG)*2
5
(SB)Audio signal rear LH
6
(BR)15
(G)Steering switch signal A Input ONKeep pushing SOURCE
switch.Approx. 0 V
Keep pushing MENU UP
switch.Approx. 1.2 V
Keep pushing MENU DOWN
switch.Approx. 2.5 V
Keep pushing ENTER
switch.Approx. 3.7 V
Except for above. Approx. 5 V
7
(V)Ground ACC power supply Input ACC
Battery voltage
8
(R/Y)Ground Illumination control signal Input OFFIllumination control switch is
operated by lighting switch
in ON position.Change between approx. 0 V
and approx. 12 V
9
(R)Ground Illumination signal Input OFFLighting switch is OFF. Approx. 0 V
Lighting switch is ON. Approx. 12 V
11
(BR)
*1
(P)*2
12
(R)*1
(L)*2Audio signal front RH
Output ON Receive audio signal.
13
(Y)14
(P)Audio signal rear RH
15
(G)GroundSteering switch signal
ground– ON – Approx. 0 V
16
(O)15
(G)Steering switch signal B Input ONKeep pushing VOL DOWN
switch.Approx. 0 V
Keep pushing VOL UP
switch.Approx. 1.2 V
Keep pushing TEL switch. Approx. 2.5 V
Keep pushing BACK switch. Approx. 3.7 V
Except for above. Approx. 5 V
19
(Y)Ground Battery power supply Input OFF
Battery voltage
20
(B)Ground Ground – ON – Approx. 0 V
23
(R)
*1
(Y)*2–Communication signal
(H)Input/
Output–– –
SKIB3609E
SKIB3609E

TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
AV-67
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2006 January2006 M35/M45
24
(B)*1
(O)*2–Communication signal
(L)Input/
Output–– –
30
(BR)31
(B/R)TEL voice signal Input ONWhen inputting telephone
voice.
32
(L/G)
*1
(P)*2
33
(L/Y)*1
(L)*2Voice guidance signal Input ON Push “VOICE” button.
37 – Shield – – – –
38 – Shield – – – –
41
(R)45
(G)Audio signal LH Input ON Satellite radio mode is ON.
42
(B)46
(W)Audio signal RH Input ON Satellite radio mode is ON.
43
(W)GroundCommunication signal
(AUDIO-SAT)Output ON Satellite radio mode is ON.
47 – Shield – – – –
48 – Shield – – – –
50
(B)Ground REQ1 (SAT-AUDIO) Input ON Satellite radio mode is ON. Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switchOperation
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3826E
SKIB3825E

AV-68
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
Revision: 2006 January2006 M35/M45
*1: 2WD models without navigation system and RAS
*2: Except *1
Audio Unit for BOSE SystemNKS0048M
51
(R)GroundCommunication signal
(SAT-AUDIO)Input ON Satellite radio mode is ON.
53 Ground Antenna amp ON signal Output ON
Approx. 12 V
54 – AM-FM main Input – – –
55 – FM sub Input – – –Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switchOperation
SKIB3824E
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switch Operation
2
(R/L)3
(W)Audio signal LH Output ON Receive audio signal.
6
(BR)15
(G)Steering switch signal A Input ONKeep pushing SOURCE
switch.approx. 0 V
Keep pushing MENU UP
switch.Approx. 1.2 V
Keep pushing MENU DOWN
switch.Approx. 2.5 V
Keep pushing ENTER
switch.Approx. 3.7 V
Except for above. Approx. 5 V
7
(V)Ground ACC power supply Input ACC
Battery voltage
8
(R/Y)Ground Illumination control signal Input OFFIllumination control switch is
operated by lighting switch
in ON position.Change between approx. 0 V
and approx. 12 V
9
(R)Ground Illumination signal Input OFFLighting switch is OFF. Approx. 0 V
Lighting switch is ON. Approx. 12 V
11
(P)12
(L)Audio signal RH Output ON Receive audio signal.
SKIB3609E
SKIB3609E

TERMINALS AND REFERENCE VALUE FOR CONTROL UNIT
AV-69
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2006 January2006 M35/M45
15
(G)GroundSteering switch signal
ground– ON – Approx. 0 V
16
(O)15
(G)Steering switch signal B Input ONKeep pushing VOL DOWN
switch.Approx. 0 V
Keep pushing VOL UP
switch.Approx. 1.2 V
Keep pushing TEL, PTT
switch.Approx. 2.5 V
Keep pushing BACK switch. Approx. 3.7 V
Except for above. Approx. 5V
19
(Y)Ground Battery power supply Input OFF
Battery voltage
20
(B)Ground Ground – ON – Approx. 0 V
21
*
(B/R)25
*
(BR)Sound signal LH
Input ONWhen playing DVD
(Down mix is ON)
22
*
(B/W)26
*
(L)Sound signal RH
23
(Y)–Communication signal
(H)Input/
Output–– –
24
(O)–Communication signal
(L)Input/
Output–– –
27
*– Shield––
30
(BR)31
(B/R)TEL voice signal Input ONWhen inputting TEL voice
signal.
37 – Shield – – – –
41
(R)45
(G)Audio signal LH Input ON Satellite radio mode is ON.
42
(B)46
(W)Audio signal RH Input ON Satellite radio mode is ON. Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switch Operation
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E