Infiniti QX56 (Z62). Manual — part 979
PCS-72
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
PUSH-BUTTON IGNITION SWITCH
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 2
1.
Disconnect BCM connector.
2.
Check continuity between IPDM E/R harness connector and push-button ignition switch harness connec-
tor.
3.
Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace harness.
5.
CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT
Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness.
6.
CHECK PUSH-BUTTON IGNITION SWITCH
PCS-72, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace push-button ignition switch.
7.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000006220224
1.
CHECK PUSH-BUTTON IGNITION SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch connector.
3.
Check continuity between push-button ignition switch terminals.
(+)
(–)
Voltage (V)
(Approx.)
IPDM E/R
Connector
Terminal
E17
66
Ground
Battery voltage
IPDM E/R
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
E17
66
M101
4
Existed
IPDM E/R
Ground
Continuity
Connector
Terminal
E17
66
Not existed
Push-button ignition switch
Ground
Continuity
Connector
Terminal
M101
1
Existed
PCS
PUSH-BUTTON IGNITION SWITCH
PCS-73
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace push-button ignition switch.
Push-button ignition switch
Condition
Continuity
Terminal
4
1
Pressed
Existed
Not pressed
Not existed
PCS-74
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR
PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR
Description
INFOID:0000000006220225
Push-button ignition switch changes the power supply position.
BCM maintains the power supply position status.
BCM changes the power supply position with the operation of the push-button ignition switch.
Component Function Check
INFOID:0000000006220226
1.
CHECK FUNCTION
Check push-button ignition switch (“LOCK INDICATOR”, “ACC INDICATOR” and “IGNITION ON IND”) in
Active Test of BCM with CONSULT-III.
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000006220227
1.
CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch connector.
3.
Check voltage between push-button ignition switch harness connector and ground.
Is the inspection normal?
YES
>> GO TO 2.
NO-1
>> Check 10 A fuse [No.10, located in fuse block (J/B)].
NO-2
>> Check harness for open or short between push-button ignition switch and fuse.
2.
CHECK BCM INPUT
1.
Connect push-button ignition switch connector.
2.
Disconnect BCM connector.
3.
Check voltage between BCM connector and ground.
Is the inspection normal?
YES
>> Replace BCM. Refer to
BCS-81, "Removal and Installation"
NO
>> GO TO 3.
3.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT
1.
Disconnect push-button ignition switch connector.
Test item
Description
LOCK INDICATOR
ACC INDICATOR
IGNITION ON IND
ON
Position indicator
Illuminates
OFF
Does not illuminate
(+)
(–)
Voltage (V)
(Approx.)
Push-button ignition switch
Connector
Terminal
M101
8
Ground
Battery voltage
(+)
(–)
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M101
73
Ground
Battery voltage
91
109
PCS
PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR
PCS-75
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
2.
Check continuity between BCM harness connector and push-button ignition switch harness connector.
3.
Check continuity between BCM harness connector and ground.
Is the inspection normal?
YES
>> Replace push-button ignition switch.
NO
>> Repair or replace harness.
Indicator
BCM
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
LOCK
M71
91
M101
5
Existed
ACC
109
6
ON
73
7
Indicator
BCM
Ground
Continuity
Connector
Terminal
LOCK
M71
91
Not existed
ACC
109
ON
73
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