Nissan GT-R. Manual — part 235
PCS
POWER DISTRIBUTION SYSTEM
PCS-21
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Component Parts Location
INFOID:0000000009163874
1.
BCM M118, M119, M121, M122,
M123
2.
IPDM E/R E5, E6, F7
3.
Combination meter M53
4.
TCM B45
5.
Push button ignition switch M131
6.
Stop lamp switch E110
7.
Combination meter (Key warning
lamp) M53
A.
Behind the instrument lower panel
(RH)
B.
Engine room dash panel (RH)
C.
View with trunk front finisher re-
moved
D.
View with instrument lower panel
(driver) removed
E.
Located on the conbination meter
JMMIA0023ZZ
PCS-22
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis Procedure
INFOID:0000000009163902
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connectors.
3.
Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Signal name
Fuse and fusible link No.
Battery power supply
I
10
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
M118
1
Battery voltage
M119
11
BCM
Ground
Continuity
Connector
Terminal
M119
13
Existed
PCS
PUSH-BUTTON IGNITION SWITCH
PCS-23
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
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PUSH-BUTTON IGNITION SWITCH
Description
INFOID:0000000009163903
BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via
the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication
line to BCM.
Diagnosis Procedure
INFOID:0000000009163905
1.
CHECK PUSH-BUTTON IGNITION SWITCH OPERATION
Press push-button ignition switch and check if it turns ON.
Does ignition switch turn ON?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch connector and BCM connector.
3.
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)
1.
Disconnect IPDM E/R connector.
2.
Check continuity between IPDM E/R harness connector and BCM harness connector.
3.
Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-17, "Removal and Installation"
.
NO
>> Repair or replace harness.
4.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1.
Check continuity between BCM harness connector and push-button ignition switch harness connector.
2.
Check continuity between BCM harness connector and ground.
(+)
(–)
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M122
89
Ground
Battery voltage
IPDM E/R
BCM
Continuity
Connector
Terminal
Connector
Terminal
E5
28
M122
89
Existed
IPDM E/R
Ground
Continuity
Connector
Terminal
E5
28
Not existed
BCM
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
M122
89
M131
4
Existed
PCS-24
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
PUSH-BUTTON IGNITION SWITCH
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness.
5.
CHECK PUSH-BUTTON IGNITION 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
Check push-button ignition switch. Refer to
PCS-24, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace push button ignition switch. Refer to
PCS-31, "Removal and Installation"
7.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009163906
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.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace push-button ignition switch. Refer to
PCS-31, "Removal and Installation"
BCM
Ground
Continuity
Connector
Terminal
M122
89
Not existed
Push-button ignition switch
Ground
Continuity
Connector
Terminal
M131
1
Existed
Push-button ignition switch
Condition
Continuity
Terminal
1
4
Push-button ignition
switch
Pressed
Existed
Not pressed
Not existed
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