Nissan Maxima. Manual - part 222

BCS

B2562 LOW VOLTAGE

BCS-35

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

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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 

BCS-35, "Diagnosis Procedure"

.

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 

PG-2, "Work Flow"

.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT AND GROUND CIRCUIT

Check BCM power supply circuit and ground circuit. Refer to 

BCS-36, "Diagnosis Procedure"

.

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 Procedure"

.

>> 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 

BCS-67, "Wiring Diagram"

.

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 Procedure"

.

>> 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 >

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COMBINATION SWITCH INPUT CIRCUIT

Diagnosis Procedure

INFOID:0000000009467070

Regarding Wiring Diagram information, refer to 

BCS-67, "Wiring Diagram"

.

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"

 (xenon type) or 

EXL-

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) :

Description"

.

>> Work end.

System

Terminals

Voltage

(Approx.)

(+)

(-)

BCM

Ground

Connector

Terminal

INPUT 1

M19

95

Refer to 

BCS-

46, "Physical 

Values"

.

INPUT 2

97

INPUT 3

76

INPUT 4

96

INPUT 5

75