Nissan Maxima. Manual — part 222
BCS
B2562 LOW VOLTAGE
BCS-35
< DTC/CIRCUIT DIAGNOSIS >
[BCM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
B2562 LOW VOLTAGE
DTC Logic
INFOID:0000000009467065
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION
1. Erase DTC.
2. Turn ignition switch OFF.
3. Perform the "SELF-DIAG RESULTS" of BCM with CONSULT, after the ignition switch has been turned ON
for 1.5 seconds or more.
Is any DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009467066
1.
CHECK BATTERY VOLTAGE
Check battery voltage.
Is battery voltage less than 8.8V?
YES
>> Charge battery and retest. Refer to
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT AND GROUND CIRCUIT
Check BCM power supply circuit and ground circuit. Refer to
Is the inspection results normal?
YES
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
NO
>> Repair or replace harness.
Special Repair Requirement
INFOID:0000000009467067
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to
BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) :
>> Work End.
DTC
Display contents of
CONSULT
Diagnostic item is detected when ...
Possible cause
B2562
LOW VOLTAGE
When the power supply voltage to BCM remains less
than 8.8 V for 1.5 seconds or more
Harness or connector (power supply
circuit)
BCS-36
< DTC/CIRCUIT DIAGNOSIS >
[BCM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000009467068
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE AND FUSIBLE LINK
Check if the following BCM fuses or fusible link are blown.
Is the fuse or fusible link blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
Special Repair Requirement
INFOID:0000000009467069
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to
BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) :
>> Work End.
Terminal No.
Signal name
Fuse and fusible link No.
1
Battery power supply
H
11
10
24
7
Terminals
Voltage
(Approx.)
(+)
(
−)
BCM
Ground
Connector
Terminal
M16
1
Battery voltage
M17
11
M18
24
BCM
Ground
Continuity
Connector
Terminal
M17
13
Yes
BCS
COMBINATION SWITCH INPUT CIRCUIT
BCS-37
< DTC/CIRCUIT DIAGNOSIS >
[BCM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
COMBINATION SWITCH INPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000009467070
Regarding Wiring Diagram information, refer to
.
1.
CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect the BCM and combination switch.
3. Check continuity between BCM harness connector and combi-
nation switch harness connector.
Does continuity exist?
YES
>> GO TO 2
NO
>> Repair or replace harness.
2.
CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Repair or replace harness.
NO
>> GO TO 3
3.
CHECK BCM OUTPUT SIGNAL
1. Connect the BCM and the combination switch connector.
2. Turn ON any switch in the system that is malfunctioning.
3. Check voltage between BCM harness connector and ground.
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
INPUT 1
M19 (A)
95
M28 (B)
11
Yes
INPUT 2
97
9
INPUT 3
76
7
INPUT 4
96
10
INPUT 5
75
13
ALMIA0102ZZ
System
BCM
Ground
Continuity
Connector
Terminal
INPUT 1
M19
95
No
INPUT 2
97
INPUT 3
76
INPUT 4
96
INPUT 5
75
ALMIA0103ZZ
ALMIA0104ZZ
BCS-38
< DTC/CIRCUIT DIAGNOSIS >
[BCM]
COMBINATION SWITCH INPUT CIRCUIT
Is the measurement normal when any of the switches is turned ON?
YES
>> Replace combination switch. Refer to
EXL-160, "Removal and Installation"
324, "Removal and Installation"
(halogen type).
NO
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
Special Repair Requirement
INFOID:0000000009467071
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to
BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) :
.
>> Work end.
System
Terminals
Voltage
(Approx.)
(+)
(-)
BCM
Ground
Connector
Terminal
INPUT 1
M19
95
Refer to
.
INPUT 2
97
INPUT 3
76
INPUT 4
96
INPUT 5
75
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