Nissan Altima L32. Manual - part 436

P0605 ECM

EC-865

< COMPONENT DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

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Diagnosis Procedure

INFOID:0000000004349830

1.

INSPECTION START

 With CONSULT-III

1. Turn ignition switch ON.

2. Select “SELF-DIAG RESULTS” mode with CONSULT-III.

3. Touch “ERASE”.

4. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-864, "DTC Logic"

.

 With GST

1. Turn ignition switch ON.

2. Select Service $04 with GST.

3. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-864, "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-563, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment"

.

>> INSPECTION END

EC-866

< COMPONENT DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

P0607 ECM

P0607 ECM

Description

INFOID:0000000004468253

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:0000000004349832

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-866, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004349833

1.

INSPECTION START

With CONSULT-III

1. Turn ignition switch ON.

2. Select “SELF-DIAG RESULTS” mode with CONSULT-III.

3. Touch “ERASE”.

4. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-866, "DTC Logic"

.

5. Check DTC.

With GST

1. Turn ignition switch ON.

2. Select “Service $04” with GST.

3. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-866, "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-563, "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-867

< COMPONENT DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

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EC

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P0643 SENSOR POWER SUPPLY

DTC Logic

INFOID:0000000004349834

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8V 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-867, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004349835

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 a voltage of power source for 
sensor is excessively low or high.

• Harness or connectors

(APP sensor 1 circuit is shorted.)
(TP sensor circuit is shorted.)
(Battery current sensor circuit is shorted.)
(PSP sensor circuit is shorted.)
[Camshaft position sensor (PHASE) circuit is 
shorted.]

• Accelerator pedal position sensor
• Throttle position sensor
• Battery current sensor
• Power steering pressure sensor
• Camshaft position sensor (PHASE)

EC-868

< COMPONENT DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

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 CIRCUITS

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.

• Battery current sensor (Refer to 

EC-885, "Component Inspection"

.)

• Power steering pressure sensor (Refer to 

EC-860, "Component Inspection"

.)

• Camshaft position sensor (PHASE) (Refer to 

EC-789, "Component Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace malfunctioning component.

5.

CHECK TP SENSOR

Refer to 

EC-716, "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-565, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

.

>> INSPECTION END

7.

CHECK APP SENSOR

Refer to 

EC-926, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace accelerator pedal assembly.

APP sensor

Ground

Voltage

Connector

Terminal

E40

5

Ground

Approx. 5V

PBIA9607J

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F13

47

Electric throttle control actuator

F57

1

51

Battery current sensor

F5

1

55

PSP sensor

F40

1

59

CMP sensor (PHASE)

F55

1

E10

83

APP sensor

E40

5