Nissan Maxima. Manual - part 485

EC-424

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P1554 BATTERY CURRENT SENSOR

2. Check voltage between ECM harness connector terminals

under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-424, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010095121

Regarding Wiring Diagram information, refer to 

EC-554, "Wiring Diagram"

.

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT

1. Disconnect battery current sensor harness connector.

2. Turn ignition switch ON.

3. Check the voltage between battery current sensor harness con-

nector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit, short to ground or short to power in

harness or connectors.

3.

CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between battery current sensor harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between battery current sensor harness connector and ECM harness connector.

ECM

Voltage (V)

Connector

Terminal

Terminal

+

–

F13

42

(Battery current 

sensor signal)

44

(Sensor ground)

Above 2.3 at least once

JMBIA1879ZZ

Battery current sensor

Ground

Voltage (V)

Connector

Terminal

F5

1

Ground

Approx. 5

JMBIA1602ZZ

Battery current sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F5

2

F13

44

Existed

P1554 BATTERY CURRENT SENSOR

EC-425

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2. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK BATTERY CURRENT SENSOR

Refer to 

EC-425, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace battery negative cable assembly.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000010095122

1.

CHECK BATTERY CURRENT SENSOR

1. Turn ignition switch OFF.

2. Reconnect harness connectors disconnected.

3. Disconnect battery negative cable (1).

4. Install jumper cable (A) between battery negative terminal and

body ground.

5. Turn ignition switch ON.

6. Check the voltage between ECM harness connector terminals

under the following conditions.

Before measuring the terminal voltage, confirm that the battery is fully charged.
Refer to 

PG-2, "How to Handle Battery"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace battery negative cable assembly.

Battery current sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F5

3

F13

42

Existed

: Vehicle front

: To body ground

ALBIA0610ZZ

ECM

Voltage (V)

Connector

+

–

Terminal

Terminal

F13

42

(Battery current 

sensor signal)

44

(Sensor ground)

Approx. 2.5

JMBIA1879ZZ

EC-426

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P1564 ASCD STEERING SWITCH

P1564 ASCD STEERING SWITCH

Description

INFOID:0000000010095123

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-68, "System Diagram"

 for the ASCD function.

DTC Logic

INFOID:0000000010095124

DTC DETECTION LOGIC

NOTE:

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

EC-391, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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

ing the next test. 

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.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

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.
Is DTC detected?

YES

>> Go to 

EC-426, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010095125

Regarding Wiring Diagram information, refer to 

EC-554, "Wiring Diagram"

.

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ASCD STEERING SWITCH CIRCUIT

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P1564

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

P1564 ASCD STEERING SWITCH

EC-427

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 With CONSULT

1. Turn ignition switch ON.

2. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with

CONSULT.

3. Check each item indication under the following conditions.

 Without CONSULT

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector terminals

under the following conditions.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 3.

3.

CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect combination switch harness connector.

4. Check the continuity between combination switch and ECM harness connector.

5. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E30, M11

Monitor item

Condition

Indication

MAIN SW

MAIN switch

Pressed

ON

Released

OFF

CANCEL SW

CANCEL switch

Pressed

ON

Released

OFF

RESUME/ACC SW

RESUME/ACCEL-
ERATE switch

Pressed

ON

Released

OFF

SET SW

SET/COAST switch

Pressed

ON

Released

OFF

ECM

Condition

Voltage (V)

Connector

+

–

Terminal

Terminal

E10

85

(ASCD 

steering 

switch 

signal)

92

(ASCD 

steering 

switch 

ground)

MAIN switch: Pressed

Approx. 0

CANCEL switch: Pressed

Approx. 1

SET/COAST switch: 
Pressed

Approx. 2

RESUME/ACCELERATE 
switch: Pressed

Approx. 3

All ASCD steering switches: 
Released

Approx. 4

JMBIA1880ZZ

Combination switch

ECM

Continuity

Terminal

Connector

Terminal

16

E10

92

Existed