Nissan Altima L32. Manual - part 564

P0605 ECM

EC-1377

< COMPONENT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

YES

>> Go to 

EC-1377, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004362221

1.

INSPECTION START

1. Turn ignition switch ON.

2. Erase DTC.

3. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-1376, "DTC Logic"

.

Is the 1st trip DTC P0605 displayed again?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

REPLACE ECM

1. Replace ECM.

2. Go to 

EC-1051, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment"

.

>> INSPECTION END

EC-1378

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0607 ECM

P0607 ECM

Description

INFOID:0000000004362222

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle, and each control unit shares information and links with other

control units during operation (not independent). In CAN communication, control units are connected with 2

communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000004362223

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check DTC.
Is DTC detected?

YES

>> Go to 

EC-1378, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004362224

1.

INSPECTION START

1. Turn ignition switch ON.

2. Erase DTC.

3. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-1378, "DTC Logic"

.

4. Check DTC.
Is the DTC P0607 displayed again?

Yes

>> GO TO 2.

No

>> INSPECTION END

2.

REPLACE ECM

1. Replace ECM.

2. Go to 

EC-1051, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0607

CAN communication bus

When detecting error during the initial diagno-
sis of CAN controller of ECM.

• ECM

P0643 SENSOR POWER SUPPLY

EC-1379

< COMPONENT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0643 SENSOR POWER SUPPLY

DTC Logic

INFOID:0000000004362225

DTC DETECTION 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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 1 second.

2. Check DTC.
Is DTC detected?

YES

>> Go to 

EC-1379, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004362226

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

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

GI-45, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT

1. Disconnect accelerator pedal position (APP) sensor harness connector.

2. Turn ignition switch ON.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P0643

Sensor power supply 
circuit short

ECM detects that the voltage of power 
source for sensor is excessively low or high.

• Harness or connectors

[Accelerator pedal position (APP) sensor 1 cir-
cuit is shorted.]
[Throttle position (TP) sensor circuit is short-
ed.]
[Camshaft position (CMP) sensor (PHASE) 
circuit is shorted.)
[Power steering pressure (PSP) sensor circuit 
is shorted.]
(Battery current sensor circuit is shorted.)

• APP sensor
• TP sensor
• CMP sensor (PHASE)
• PSP sensor
• Battery current sensor

EC-1380

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0643 SENSOR POWER SUPPLY

3. Check the voltage between APP sensor harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 3.

3.

CHECK SENSOR POWER SUPPLY CIRCUIT

Check harness for short to power and short to ground, between the following terminals.

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK COMPONENTS

Check the following.

• Camshaft position sensor (PHASE) (Refer to 

EC-1298, "Component Inspection"

.)

• Battery current sensor (Refer to 

EC-1399, "Component Inspection"

.)

• Power steering pressure sensor (Refer to 

EC-1372, "Component Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace malfunctioning component.

5.

CHECK TP SENSOR

Refer to 

EC-1217, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 6.

6.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator.

2. Go to 

EC-1217, "Special Repair Requirement"

.

>> INSPECTION END

7.

CHECK APP SENSOR

Refer to 

EC-1450, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

REPLACE ACCELERATOR PEDAL ASSEMBLY

APP sensor

Ground

Voltage (V)

Connector

Terminal

E40

5

Ground

Approx. 5

PBIA9607J

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F13

47

TP sensor

F57

1

51

Battery current sensor

F5

1

55

PSP sensor

F40

3

59

CMP sensor (PHASE) (bank 1)

F55

1

63

CMP sensor (PHASE) (bank 2)

F60

1

E10

83

APP sensor

E40

5