Infiniti QX56 (Z62). Manual — part 338
DAS
WARNING SYSTEMS SWITCH CIRCUIT
DAS-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 Check
INFOID:0000000006223825
1.
CHECK WARNING SYSTEMS SWITCH INPUT SIGNAL
1.
Turn the ignition switch ON.
2.
Select the DATA MONITOR item “WARN SYS SW” of “ICC/ADAS” with CONSULT-III.
3.
With operating the warning systems switch, check the monitor status.
Is the inspection result normal?
YES
>> Warning systems switch circuit is normal.
NO
>> Refer to
DAS-389, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000006223826
1.
CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT
1.
Turn the ignition switch ON.
2.
Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace the ADAS control unit. Refer to
DAS-63, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK WARNING SYSTEMS SWITCH
1.
Turn ignition switch OFF.
2.
Remove warning systems switch.
3.
Check warning systems switch. Refer to
DAS-390, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace the warning systems switch. Refer to
DAS-404, "Removal and Installation"
3.
CHECK WARNING SYSTEMS SWITCH GROUND CIRCUIT
Check continuity between twin switch harness connector terminal and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR OPEN
1.
Disconnect the ADAS control unit connector.
Monitor item
Condition
Monitor status
WARN SYS
SW
Warning systems switch is pressed
On
Warning systems switch is not pressed
OFF
Terminals
Condition
Voltage
(Approx.)
(+)
(
−
)
ADAS control unit
Ground
Warning
systems
switch
Connector
Terminal
B61
1
Pressed
0 V
Released
12 V
Twin switch
Ground
Continuity
Connector
Terminal
M127
3
Existed
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 result normal?
YES
>> GO TO 5.
NO
>> Repair the harnesses or connectors.
5.
CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace the ADAS control unit. Refer to
DAS-63, "Removal and Installation"
NO
>> Repair the harnesses or connectors.
Component Inspection
INFOID:0000000006223827
1.
CHECK WARNING SYSTEMS SWITCH
Check continuity of warning systems switch.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace warning systems switch.
ADAS control unit
Twin switch
Continuity
Connector
Terminal
Connector
Terminal
B61
1
M127
2
Existed
ADAS control unit
Ground
Continuity
Connector
Terminal
B61
1
Not existed
Terminal
Condition
Continuity
2
3
When warning systems switch is pressed
Existed
When warning systems switch is released
Not existed
DAS
WARNING SYSTEMS ON INDICATOR CIRCUIT
DAS-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 Check
INFOID:0000000006223828
1.
CHECK WARNING SYSTEMS ON INDICATOR
1.
Turn the ignition switch ON.
2.
Select the active test item “WARNING SYSTEM IND” of “ICC/ADAS” with CONSULT-III.
3.
With operating the test item, check the operation.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
DAS-391, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000006223829
1.
CHECK WARNING ON INDICATOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect twin switch connector.
3.
Turn ignition switch ON.
4.
Check voltage between twin switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the warning systems ON indicator power supply circuit.
2.
CHECK WARNING SYSTEMS ON INDICATOR SIGNAL FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect the ADAS control unit harness connector.
3.
Check continuity between the ADAS control unit harness connector and twin switch harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harnesses or connectors.
3.
CHECK WARNING SYSTEMS ON INDICATOR SIGNAL CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
On
: Warning systems ON indicator illuminates
Off
: Warning systems ON indicator is turned OFF
Terminals
Voltage
(Approx.)
(+)
(
−
)
Twin switch
Ground
Connector
Terminal
M127
8
Battery voltage
ADAS control unit
Twin switch
Continuity
Connector
Terminal
Connector
Terminal
B61
4
M127
9
Existed
ADAS control unit
Ground
Continuity
Connector
Terminal
B61
4
Not existed
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 indicator. Refer to
DAS-392, "Component Inspection"
Is the inspection result normal?
YES
>> Replace the ADAS control unit. Refer to
DAS-63, "Removal and Installation"
NO
>> Replace warning systems switch.
DAS-404, "Removal and Installation"
.
Component Inspection
INFOID:0000000006223830
1.
CHECK WARNING SYSTEMS ON INDICATOR
Apply battery voltage to warning systems switch terminals 8 and 9, and then check if the warning systems ON
indicator illuminates.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the warning systems switch. Refer to
DAS-404, "Removal and Installation"
Terminals
Condition
Driver warning
systems ON in-
dicator
(+)
(-)
8
9
When the battery voltage is applied
On
When the battery voltage is not applied
Off
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