Nissan Pathfinder (2012 year). Manual - part 282

 

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Nissan Pathfinder (2012 year). Manual - part 282

 

 

P1553 BATTERY CURRENT SENSOR

EC-337

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

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EC

N

P

O

Refer to 

EC-97, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT

1. Disconnect battery current sensor harness connector.

2. Turn ignition switch ON.

3. Check voltage between battery current sensor terminal 1 and

ground with CONSULT or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between battery current sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between battery current sensor terminal 2 and ECM terminal 67.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

BBIA0539E

BBIA0582E

Voltage: Approximately 5V

PBIB2609E

Continuity should exist.

August 2012

2012 Pathfinder

EC-338

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P1553 BATTERY CURRENT SENSOR

5.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between battery current sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between battery current sensor terminal 3 and ECM terminal 71.

2. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between battery current sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK BATTERY CURRENT SENSOR

Refer to 

EC-338, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace battery negative cable assembly.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000007358288

BATTERY CURRENT SENSOR

1. Reconnect harness connectors disconnected.
2. Disconnect battery negative cable.
3. Install jumper cable between battery negative terminal and body

ground.

4. Turn ignition switch ON.

Continuity should exist.

BBIA0588E

August 2012

2012 Pathfinder

P1553 BATTERY CURRENT SENSOR

EC-339

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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5. Check voltage between ECM terminal 71 (battery current sensor

signal) and ground.

6. If NG, replace battery negative cable assembly.

Voltage: Approximately 2.5V

PBIB2617E

August 2012

2012 Pathfinder

EC-340

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P1554 BATTERY CURRENT SENSOR

P1554 BATTERY CURRENT SENSOR

Component Description

INFOID:0000000007358289

The power generation voltage variable control enables fuel con-

sumption to be decreased by reducing the engine load which is

caused by the power generation of the generator. The battery cur-

rent sensor is installed to the battery cable at the negative terminal.

The sensor measures the charging/discharging current of the bat-

tery. Based on the sensor signal, ECM judges whether or not the

power generation voltage variable control is performed. When per-

forming the power generation voltage variable control, ECM calcu-

lates the target power generation voltage based on the sensor

signal. And ECM sends the calculated value as the power genera-

tion command value to IPDM E/R. For the details of the power gen-

eration voltage variable control, refer to 

CHG-12, "System

Description"

.

CAUTION:

Never connect the electrical component or the ground wire directly to the battery terminal. The con-

nection causes the malfunction of the power generation voltage variable control, and then the battery

discharge may occur.

On Board Diagnosis Logic

INFOID:0000000007358290

The MIL will not illuminate for this diagnosis.

NOTE:

If DTC P1554 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-312

.

Overall Function Check

INFOID:0000000007358291

Use this procedure to check the overall function of the battery current sensor circuit. During this check, a 1st

trip DTC might not be confirmed.

TESTING CONDITION:

•

Before performing the following procedure, confirm that battery voltage is more than 12.8V at idle.

•

Before performing the following procedure, confirm that all load switches and A/C switch are turned

OFF.

 WITH CONSULT

1. Start engine and let it idle.
2. Select “BAT CUR SEN” in “DATA MONITOR” mode with CONSULT.
3. Check “BAT CUR SEN” indication for 10 seconds.

“BAT CUR SEN” should be above 2,300mV at least once.

4. If NG, go to 

EC-341, "Diagnosis Procedure"

.

 WITH GST

1. Start engine and let it idle.

BBIA0582E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1554
1554

Battery current sensor perfor-
mance

The output voltage of the battery current 
sensor is lower than the specified value 
while the battery voltage is high enough.

• Harness or connectors

(The sensor circuit is open or shorted.)

• Battery current sensor

August 2012

2012 Pathfinder

P1554 BATTERY CURRENT SENSOR

EC-341

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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EC

N

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2. Check voltage between ECM terminal 71 (battery current sensor

signal) and ground for 10 seconds.

The voltage should be above 2.3V at least once.

3. If NG, go to 

EC-341, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358292

1.

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Loosen and retighten three ground screws on the body.

Refer to 

EC-97, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT

1. Disconnect battery current sensor harness connector.

2. Turn ignition switch ON.

3. Check voltage between battery current sensor terminal 1 and

ground with CONSULT or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

PBIB2616E

BBIA0539E

BBIA0582E

Voltage: Approximately 5V

PBIB2609E

August 2012

2012 Pathfinder

EC-342

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P1554 BATTERY CURRENT SENSOR

Check the following.

• Harness connectors E5, F14

• Harness for open or short between battery current sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between battery current sensor terminal 2 and ECM terminal 67.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between battery current sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between battery current sensor terminal 3 and ECM terminal 71.

2. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between battery current sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK BATTERY CURRENT SENSOR

Refer to 

EC-342, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace battery negative cable assembly.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000007358293

BATTERY CURRENT SENSOR

1. Reconnect harness connectors disconnected.
2. Disconnect battery negative cable.

Continuity should exist.

Continuity should exist.

August 2012

2012 Pathfinder

P1554 BATTERY CURRENT SENSOR

EC-343

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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EC

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3. Install jumper cable between battery negative terminal and body

ground.

4. Turn ignition switch ON.

5. Check voltage between ECM terminal 71 (battery current sensor

signal) and ground.

6. If NG, replace battery negative cable assembly.

BBIA0588E

Voltage: Approximately 2.5V

PBIB2617E

August 2012

2012 Pathfinder

EC-344

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P1564 ASCD STEERING SWITCH

P1564 ASCD STEERING SWITCH

Component Description

INFOID:0000000007358294

ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation

of switch, and determines which button is operated.

Refer to 

EC-53, "System Description"

 for the ASCD function.

On Board Diagnosis Logic

INFOID:0000000007358295

This self-diagnosis has the one trip detection logic.

The MIL will not illuminate for this diagnosis.

NOTE:

If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to

EC-309

.

DTC Confirmation Procedure

INFOID:0000000007358296

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step. 

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

 WITH CONSULT

1. Turn ignition switch ON and wait at least 10 seconds.
2. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
4. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-

onds.

5. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Check DTC.
7. If DTC is detected, go to 

EC-344, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358297

1.

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

PBIB2645E

DTC No.

Trouble Diagnosis 

Name

DTC Detecting Condition

Possible Cause

P1564
1564

ASCD steering switch

• An excessively high voltage signal from the ASCD 

steering switch is sent to ECM.

• ECM detects that input signal from the ASCD steer-

ing switch is out of the specified range.

• ECM detects that the ASCD steering switch is stuck 

ON.

• Harness or connectors

(The switch circuit is open or shorted.)

• ASCD steering switch
• ECM

August 2012

2012 Pathfinder

 

 

 

 

 

 

 

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