INFINITI QX56 2011 Factory Service Manual

DIAGNOSIS SYSTEM (IPDM E/R)EXL-31
< SYSTEM DESCRIPTION > [XENON TYPE]
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*: Operates while the engine is running. EXTERNAL LAMPS
Off OFF
TAIL Operates the tail lamp relay.
Lo Operates the headlamp low relay.
Hi
Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog Operates the front fog lamp relay.
Test item Operation Description
Revision: 2010 May2011 QX56

EXL-32
< SYSTEM DESCRIPTION >[XENON TYPE]
DIAGNOSIS SYSTEM (AFS)
DIAGNOSIS SYSTEM (AFS)
CONSULT-III Function (ADAPTIVE LIGHT)INFOID:0000000006213915
APPLICATION ITEM
WORK SUPPORT
*: Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit) side. Refer to
BRC-64, "Work Pro-
cedure".
DATA MONITOR
*: The swivel angle "0°" (feedback value) of the swivel position sensor signal may differ from the swivel angle "0 °" of the swivel motor
(AFS control unit command value). This causes that the swivel motor initializes the value based on the step number from the sto pper.
ACTIVE TEST
Diagnostic mode Description
Ecu Identification Allows confirmation of AFS control unit part number.
Self Diagnostic Result Displays the diagnosis results judged by AFS control unit.
Work support Sets each sensor.
Data monitor Indicates AFS control unit input data in real time.
Active test Provides the drive signal to the load. Checks operation.
Service item Description
ST ANG SEN ADJUSTMENT
*—
LEVELIZER ADJUSTMENT Adjusts the height sensor signal output value (AFS control unit recognized) in the un-
loaded vehicle condition.
Monitor item
[Unit] Description
STR ANGLS SIG
[deg] The steering angle value judged by the steering angle sensor signal received from
the steering angle sensor via CAN communication
VHCL SPD
[km/h] The vehicle speed signal value from the combination meter via CAN communication
SLCT LVR POSI
[P/R/N/D/M/FF] The selector lever status judged by the position indicator signal received from TCM
via CAN communication
HEAD LAMP
[On/Off] The headlamp On/Off status judged by the low beam headlamp (ON) signal received
from IPDM E/R via
CAN communication
AFS SW
[On/Off] The AFS On/Off status judged by AFS control unit
HI SEN OTP RR
[V] The rear height sensor signal voltage value input from the rear height sensor
HI SEN OTP FR
[V] The front height sensor signal voltage value input from the front height sensor
LEV ACTR VLTG
[%] The ratio value to the battery voltage generated by the levelizer activation signal con-
trol value judged by AFS control unit
SWVL SEN RH
*
[deg] The head lamp swivel angle value judged by AFS control unit received from the swiv-
el position sensor signal input from the swivel actuator
SWVL SEN LH
*
[deg]
SWVL ANGLE RH
*
[deg]
The swivel angle command value to the swivel motor judged by AFS control unit
SWVL ANGLE LH
*
[deg]
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (AFS)EXL-33
< SYSTEM DESCRIPTION > [XENON TYPE]
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CAUTION:
Start the engine when using “ACTIVE TEST”.
NOTE:
“Fast” operation speed is as three times fast as “Slow”.Test item Operation Item Description
LOW BEAM TEST RIGHT Origin Fast Swivels the right headlamp to the swivel angle 0
° in the normal speed.
Peak Fast Swivels the right headlamp to the swivel angle approximately 15
° in the nor-
mal speed.
Origin Slow Swivels the right headlamp to the swivel angle 0
° in the speed at the initial-
ization.
Peak Slow Swivels the right headlamp to the swivel angle approximately 15
° in the
speed at the initialization.
LOW BEAM TEST LEFT Origin Fast Swivels the left headlamp to the swivel angle 0
° in the normal speed.
Peak Fast Swivels the left headlamp to the swivel angle approximately 17
° in the nor-
mal speed.
Origin Slow Swivels the left headlamp to the swivel angle 0
° in the speed at the initializa-
tion.
Peak Slow Swivels the left headlamp to the swivel angle approximately 17
° in the speed
at the initialization.
LEVELIZER TEST Origin
Changes the aiming motor drive signal to approximately 70% of the battery
voltage. Moves the headlamp upward and downward.
Peak Changes the aiming motor drive signal to approximately 15% of the battery
voltage. Moves the headlamp upward and downward.
Revision: 2010 May2011 QX56

EXL-34
< ECU DIAGNOSIS INFORMATION >[XENON TYPE]
BCM, IPDM E/R
ECU DIAGNOSIS INFORMATION
BCM, IPDM E/R
List of ECU ReferenceINFOID:0000000006213916
ECU Reference
BCM BCS-33, "
Reference Value"
BCS-54, "Fail-safe"
BCS-56, "DTCInspectionPriorityChart"
BCS-57, "DTCIndex"
IPDM E/R
PCS-15, "
Reference Value"
PCS-21, "Fail-Safe"
PCS-22, "DTCIndex"
Revision: 2010 May2011 QX56

AFS CONTROL UNITEXL-35
< ECU DIAGNOSIS INFORMATION > [XENON TYPE]
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AFS CONTROL UNIT
Reference ValueINFOID:0000000006213917
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor Item Condition Value/Status
STR ANGLE SIG Steering Straight-forward Approx. 0
°
Steering Approx. -900 ° - +900 °
VHCL SPD Driving at 40 km/h (25 MPH) 40 km/h
SLCT LVR POSI Selector lever operation P - 1
HEAD LAMP Light switch 2ND On
Other than 2ND Off
AFS SW AFS switch ON On
OFF Off
HI SEN OTP FR Vehicle front height Unloaded vehicle condition Approx. 3.5 V
Low (Leveling operation
downward edge)
Approx. 1.6 V
HI SEN OTP RR Vehicle rear height Unloaded vehicle condition Approx. 3.2 V
Low (Leveling operation
downward edge)
Approx. 1.5 V
LEV ACTR VLTG He adlamp leveling Unloaded vehicle condition Approx. 60.0%
Low (Leveling operation
downward edge)
Approx. 58.7%
SWVL SEN RH Right headlamp swivel activation Standard position Approx. 0
°
Activation Positive degree (+ °)
SWVL SEN LH Left headlamp swivel activation Standard position Approx. 0
°
Activation Positive degree (+ °)
SWVL ANGLE RH Right headlamp swivel activation Standard position Approx. 0
°
Activation Positive degree (+ °)
SWVL ANGLE LH Left headlamp swivel activation Standard position Approx. 0
°
Activation Positive degree (+ °)
JMLIA0753ZZ
Revision: 2010 May2011 QX56

EXL-36
< ECU DIAGNOSIS INFORMATION >[XENON TYPE]
AFS CONTROL UNIT
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
output
1
(GR) Ground Ignition power supply Input The ignition switch ON Battery voltage
2
(LG/B) Ground
Right swivel position sensor
ground Input The ignition switch ON 0 V
3
(GR/
R) Ground AFS switch signal Input AFS switch
ON Battery voltage
OFF 0 V
4
(Y/R) Ground
Right swivel position sensor
power supply Output The ignition switch ON 5 V
5
(L/Y) Ground Front height sensor power
supply Output The ignition switch ON 5 V
6
(LG/R) Ground Rear height sensor power
supply
Output The ignition switch ON 5 V
7
(P) Ground CAN-L
Input/
output ——
8
(B/O) Ground Rear height sensor ground Input The ignition switch ON 0 V
9
(GR) Ground
Right swivel position sensor
signal Output
Right headlamp
swivel angle 0
° 1.0 V
15 ° 2.8 V
10
(B/W) Ground Front height sensor ground Input The ignition switch ON 0 V
11
(R) Ground Right swivel motor 1-phase (
−)Output Right headlamp
swivel
ActivationReference waveform
8 - 12 V
13
(B) Ground Right swivel motor 2-phase (
−)Output Right headlamp
swivel
Stopped 9.5 - 11.5 V
15
(W) Ground Left swivel motor 1-phase (+) Output Left headlamp swivel Activation Reference waveform
8 - 12 V
17
(G) Ground Left swivel motor 2-phase (+) Output Left headlamp swivel Stopped 9.5 - 11.5 V
19
(SB) Ground Right levelizer signal Output Right headlamp lev-
eling
Unloaded ve-
hicle condition
7.5 V
Leveling oper-
ation down-
ward edge 7.3 V
SKIB2408J
SKIB2408J
Revision: 2010 May2011 QX56

AFS CONTROL UNITEXL-37
< ECU DIAGNOSIS INFORMATION > [XENON TYPE]
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(V) Ground Front height sensor signal Output Vehicle rear height Unloaded ve-
hicle condition
3.5 V
Low (Leveling
operation
downward
edge) 1.6 V
24
(L/O) Ground Left swivel position sensor
power supply Output The ignition switch ON 5 V
25
(B) Ground Ground — The ignition switch ON 0 V
27
(BR/Y) Ground
Left swivel position sensor
ground Input The ignition switch ON 0 V
28
(R/G) Ground Rear height sensor signal Output Vehicle rear height Unloaded ve-
hicle condition
3.2 V
Low (Leveling
operation
downward
edge) 1.5 V
29
(BR/ W) Ground
Left swivel position sensor sig-
nal OutputLeft headlamp swivel
angle 0
° 1.0 V
17 ° 3.0 V
30
(L) Ground CAN-H Input/
output ——
32
(G) Ground Right swivel motor 2-phase (+) Output Right headlamp
swivelActivationReference waveform
8 - 12 V
34
(W) Ground Right swivel motor 1-phase (+) Output Right headlamp
swivelStopped 9.5 - 11.5 V
36
(R) Ground Left swivel motor 2-phase (
−) Output Left headlamp swivel Activation Reference waveform
8 - 12 V
38
(B) Ground Left swivel motor 1-phase (
−) Output Left headlamp swivel Stopped 9.5 - 11.5 V
40
(GR/L) Ground Left levelizer signal Output Right headlamp lev-
elingUnloaded ve-
hicle condition
7.5 V
Leveling oper-
ation down-
ward edge 7.3 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+
− Signal name Input/
output
SKIB2408J
SKIB2408J
Revision: 2010 May2011 QX56

EXL-38
< ECU DIAGNOSIS INFORMATION >[XENON TYPE]
AFS CONTROL UNIT
Fail-Safe
INFOID:0000000006213918
DTC Fail-safe AFS OFF indicator lamp Cancellation
U1000: CAN COMM CIRCUIT  Right and left swivel motors
stop at the position when DTC
is detected.
 Right and left aiming motors stop at the position when DTC
is detected. Blinks 1 second each. Ignition switch OFF
U1010: CONTROL UNIT (CAN)  Right and left swivel motors
stop at the position when DTC
is detected.
 Right and left aiming motors
stop at the position when DTC
is detected. Blinks 1 second each. Ignition switch OFF
B2503: SWIVEL ACTUATOR [RH]  Right swivel motors stop at the
position when DT C is detected.
 The signal, approximately 2 V
decreased from the levelizer
signal when DT C detected, is
output. Blinks 1 second each. Ignition switch OFF
B2504: SWIVEL ACTUATOR [LH]  Left swivel motors stop at the
position when DT C is detected.
 The signal, approximately 2 V decreased from the levelizer
signal when DT C detected, is
output. Blinks 1 second each. Ignition switch OFF
B2513: HI SEN UNUSUAL [FR]  Right and left aiming motors
stop at the position when DTC
is detected. — Ignition switch OFF
B2514: HI SEN UNUSUAL [RR]  Right and left aiming motors
stop at the position when DTC
is detected. — Ignition switch OFF
C0126: ST ANG SEN SIG  Right and left swivel motor
swivel angle returns to 0 ° and
fixed. Blinks 1 second each. Ignition switch OFF
B2516: SHIFT SIG [P, R]  Right and left swivel motor
swivel angle returns to 0 ° and
fixed. Blinks 1 second each. Ignition switch OFF
B2517: VEHICLE SPEED SIG  Right and left swivel motor
swivel angle returns to 0 ° and
fixed.
 Right and left aiming motors stop at the position when DTC
is detected. Blinks 1 second each. Ignition switch OFF
B2519: LEVELIZER CALIB  Right and left aiming motors
stop at the position when DTC
is detected. —
When the levelizer adjustment is
completed.
C0428: ST ANGLE SEN CALIB  Right and left swivel motor
swivel angle returns to 0 ° and
fixed. Blinks 1 second each.
When the steering angle sensor
neutral position registration is
competed.
B2521: ECU CIRC  Right and left swivel motors
stop at the position when DTC
is detected.
 Right and left aiming motors stop at the position when DTC
is detected. Blinks 1 second each. Ignition switch OFF
Revision: 2010 May2011 QX56

AFS CONTROL UNITEXL-39
< ECU DIAGNOSIS INFORMATION > [XENON TYPE]
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DTC Inspection Priority ChartINFOID:0000000006213919
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority
chart.
NOTE:
 If DTC U1000 is displayed with other DTC, fi rst perform the trouble diagnosis for DTC U1000.
 If DTC U1010 is displayed with other DTC, fi rst perform the trouble diagnosis for DTC U1010.
DTC IndexINFOID:0000000006213920
×: Applicable
Priority Detected items (DTC)
1  U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
2  B2519: LEVELIZER CALIB
 B2521: ECU CIRC
 C0428: ST ANG SEN CALIB
3  B2503: SWIVEL ACTUATOR [RH]
 B2504: SWIVEL ACTUATOR [LH]
 B2513: HI SEN UNUSUAL [FR]
 B2514: HI SEN UNUSUAL [RR]
 B2516: SHIFT SIG [P, R]
 B2517: VEHICLE SPEED SIG
 C0126: ST ANG SEN SIG
CONSULT display Fail-safe
AFS OFF indicator
lamp Reference
U1000: CAN COMM CIRCUIT ××EXL-82
U1010: CONTROL UNIT (CAN) ××EXL-83
B2503: SWIVEL ACTUATOR [RH] ××EXL-63
B2504: SWIVEL ACTUATOR [LH] ××EXL-63
B2513: HI SEN UNUSUAL [FR] ×EXL-68
B2514: HI SEN UNUSUAL [RR] ×EXL-71
B2516: SHIFT SIG [P, R] ××EXL-74
B2517: VEHICLE SPEED SIG ××EXL-75
B2519: LEVELIZER CALIB ×EXL-76
B2521: ECU CIRC ××EXL-77
C0126: ST ANG SEN SIG ××EXL-80
C0428: ST ANGLE SEN CALIB ××EXL-81
Revision: 2010 May2011 QX56

EXL-40
< WIRING DIAGRAM >[XENON TYPE]
EXTERIOR LIGHTING SYSTEM
WIRING DIAGRAM
EXTERIOR LIGHTING SYSTEM
Wiring DiagramINFOID:0000000006213921
JCLWM5436GB
Revision: 2010 May2011 QX56