Infiniti EX35. Manual — part 1140
PCS
B2618 BCM
PCS-61
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
B2618 BCM
Description
INFOID:0000000003657677
BCM controls the various electrical components and simultaneously supplies power according to the power
supply position.
BCM checks the power supply position internally.
DTC Logic
INFOID:0000000003657678
DTC DETECTION LOGIC
NOTE:
• If DTC B2618 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B2618 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON under the following conditions, and wait for at least 1 second.
-
Selector lever is in the P or N position.
-
Do not depress brake pedal.
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003657679
1.
INSPECTION START
1.
Turn ignition switch ON.
2.
Select “Self diagnostic result” mode with CONSULT-III.
3.
Touch “ERASE”.
4.
Perform DTC Confirmation Procedure.
See
.
Is the 1st trip DTC B2618 displayed again?
YES
>> Replace BCM. Refer to
BCS-84, "Removal and Installation"
NO
>> INSPECTION END
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2618
BCM
An immediate operation of ignition relay (IPDM E/
R) is requested by BCM, but there is no response
for more than 1 second
BCM
PCS-62
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B261A PUSH-BUTTON IGNITION SWITCH
B261A PUSH-BUTTON IGNITION SWITCH
Description
INFOID:0000000003657680
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.
DTC Logic
INFOID:0000000003657681
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Press the push-button ignition switch under the following conditions, and wait for at least 1 second.
-
Selector lever is in the P or N position.
-
Do not depress brake pedal.
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003657682
1.
CHECK PUSH-BUTTON IGNITION SWITCH OPERATION
Press push-button ignition switch and check if it turns to ON.
Does ignition switch turn to ON?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)
1.
Disconnect push-button ignition switch connector.
2.
Check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace IPDM E/R. Refer to
PCS-34, "Removal and Installation"
3.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)
1.
Disconnect IPDM E/R connector and BCM connector.
2.
Check continuity between IPDM E/R harness connector and push-button ignition switch harness connec-
tor.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B261A
PUSH-BUTTON IG-
NITION SWITCH
BCM detects a difference of signal for 1 second or
more between the following information.
• Power supply position by push-button ignition
switch
• Power supply position from IPDM E/R (CAN)
• Harness or connectors
(Push-button ignition switch circuit
is open or shorted.)
(+)
(–)
Voltage (V)
(Approx.)
IPDM E/R
Connector
Terminal
E5
28
Ground
Battery voltage
PCS
B261A PUSH-BUTTON IGNITION SWITCH
PCS-63
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
3.
Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness or connector.
4.
CHECK IGNITION SWITCH OUTPUT SIGNAL (BCM)
1.
Disconnect push-button ignition switch connector.
2.
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace BCM. Refer to
PCS-130, "Removal and Installation"
.
5.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1.
Disconnect BCM connector and IPDM E/R connector.
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 result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness or connector.
6.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
>> INSPECTION END
IPDM E/R
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
E5
28
M50
4
Existed
IPDM E/R
Ground
Continuity
Connector
Terminal
E5
28
Not existed
(+)
(–)
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M122
89
Ground
Battery voltage
BCM
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
M122
89
M50
4
Existed
BCM
Ground
Continuity
Connector
Terminal
M122
89
Not existed
PCS-64
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis Procedure
INFOID:0000000003657683
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 or replace harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair or replace harness or connector.
Signal name
Fuse and fusible link No.
Battery power supply
K
10
(+)
(
−
)
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M118
1
Ground
Battery voltage
M119
11
BCM
Ground
Continuity
Connector
Terminal
M119
13
Existed
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