2011 INFINITI QX56 Factory Service Manual

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Page 1353 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-388
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
POWER SUPPLY AND GROUND CIRCUIT
3. Check for continuity between lane camera unit harness connector and ground.
Is the inspection result normal?
YES >> IN

Page 1354 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
WARNING SYSTEMS SWITCH CIRCUITDAS-389
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
WARNING SYSTEMS SWITCH CIRCUIT
Component Function CheckINFOID:0000000006223825
1.CHECK WA

Page 1355 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-390
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
WARNING SYSTEMS SWITCH CIRCUIT
2. Check continuity between the ADAS control unit harness connector and twin switch harness connector.
Is the inspection re

Page 1356 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
WARNING SYSTEMS ON INDICATOR CIRCUITDAS-391
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
WARNING SYSTEMS ON INDICATOR CIRCUIT
Component Function CheckINFOID:000000000622382

Page 1357 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-392
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
WARNING SYSTEMS ON
INDICATOR CIRCUIT
NO >> Repair the harnesses or connectors.
4.CHECK WARNING SYSTEMS ON INDICATOR
Check the warning systems ON indicato

Page 1358 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
WARNING BUZZER CIRCUITDAS-393
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
WARNING BUZZER CIRCUIT
Component Function CheckINFOID:0000000006223831
1.CHECK WARNING BUZZER
1.

Page 1359 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-394
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
WARNING BUZZER CIRCUIT
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK WARNING BUZZER SIGNAL CIRCUIT FOR SHORT
Check continuity between

Page 1360 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
LDW & LDP SYSTEM SYMPTOMSDAS-395
< SYMPTOM DIAGNOSIS > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
SYMPTOM DIAGNOSIS
LDW & LDP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000006223833
NOTE:
For the ope

DAS
LDW & LDP SYSTEM SYMPTOMSDAS-395
< SYMPTOM DIAGNOSIS > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
SYMPTOM DIAGNOSIS
LDW & LDP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000006223833
NOTE:
For the operational conditions of Lane Departure Warn ing (LDW) and Lane Departure Prevention (LDP), refer
to the following descriptions.
LDW: DAS-277, "
LANE DEPARTURE WARNING (LDW ) SYSTEM : System Description"
LDP: DAS-280, "LANE DEPARTURE PREVENTION (L DP) SYSTEM : System Description"
Symptom Possible cause Inspection item/Reference page
Indicator/warning lamps do not
illuminate when ignition switch
OFF ⇒ ON Lane departure warning
lamp (Yellow) does not illu-
minate.
Combination meter
ADAS control unit Lane departure warning lamp
does not turned ON
Refer to
DAS-397, "
Description"
LDP ON indicator lamp
(Green) does not illuminate. Combination meter
ADAS control unit LDP ON indicator lamp does not
turned ON
Refer to
DAS-398, "
Description"
Warning systems ON indica-
tor does not illuminate. Harness between ADAS
control unit and warning sys-
tems switch
Warning systems switch
ADAS control unit Warning systems ON indicator
circuit
Refer to
DAS-391, "
Component
Function Check"
Lane departure warning
lamp (Yellow) and LDP ON
indicator lamp (Green) does
not illuminate. Combination meter
ADAS control unit Lane departure warning lamp
does not turned ON
Refer to DAS-397, "Descrip-
tion"
LDP ON indicator lamp does
not turned ON
Refer to DAS-398, "
Descrip-
tion"
All of indicator/warning
lamps does not illuminate;
Lane departure warning
lamp (Yellow)
LDP ON indicator lamp (Green)
Warning systems ON indi- cator Power supply and ground cir-
cuit of ADAS control unit
ADAS control unit Power supply and ground circuit
of ADAS control unit
Refer to
DAS-387, "
ADAS CON-
TROL UNIT : Diagnosis Proce-
dure"
LDW system is not activated.
(Indicator/warning lamps illumi-
nate when ignition switch OFF
⇒ ON) Warning systems ON indica-
tor is not turned ON
⇔ OFF
when operating warning
systems switch Harness between ADAS
control unit and warning sys-
tems switch
Harness between warning systems switch and ground
Warning systems switch
ADAS control unit Warning systems switch circuit
Refer to
DAS-389, "
Component
Function Check"
Warning buzzer is not
sounding.
(Lane departure warning
lamp is activated.) Harness between the IPDM
E/R and warning buzzer
Harness between ADAS control unit and warning
buzzer
Harness between warning buzzer and ground
Warning buzzer
ADAS control unit Warning buzzer circuit
Refer to
DAS-393, "
Component
Function Check"
Revision: 2010 May2011 QX56

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