Nissan Frontier D40. Manual - part 406

P1554 BATTERY CURRENT SENSOR

EC-315

< COMPONENT DIAGNOSIS >

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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-315, "Diagnosis Procedure"

.

Diagnosis Procedure

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1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws on the body.
Refer to

EC-90, "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-III or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

PBIA9891J

BBIA0614E

BBIA0630E

Voltage: Approximately 5V

PBIB2609E

EC-316

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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, 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.
Refer to Wiring Diagram.

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, 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.
Refer to Wiring Diagram.

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, short to ground or short to power in harness or connectors.

8.

CHECK BATTERY CURRENT SENSOR

Refer to 

EC-316, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace battery negative cable assembly.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-46, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

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BATTERY CURRENT SENSOR

Continuity should exist.

Continuity should exist.

P1554 BATTERY CURRENT SENSOR

EC-317

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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.

5.

Check voltage between ECM terminal 71 (battery current sensor
signal) and ground.

6.

If NG, replace battery negative cable assembly.

BBIA0631E

Voltage: Approximately 2.5V

PBIB2617E

EC-318

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P1564 ASCD STEERING SWITCH

P1564 ASCD STEERING SWITCH

Component Description

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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 

CCS-2

 for the ASCD function.

On Board Diagnosis Logic

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This self-diagnosis has the one trip detection logic.
The MIL will not light up for this self-diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to

EC-281

.

DTC Confirmation Procedure

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NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test. 

 WITH CONSULT-III

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-318, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

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1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws on the body.

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 

steering 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