Nissan Frontier D40. Manual - part 398

P0607 ECM

EC-283

< COMPONENT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0607 ECM

Description

INFOID:0000000005273295

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.

On Board Diagnosis Logic

INFOID:0000000005273296

This self-diagnosis has the one trip detection logic (A/T models).
The MIL will not light up for this diagnosis (M/T models).

DTC Confirmation Procedure

INFOID:0000000005273297

 WITH CONSULT-III

1.

Turn ignition switch ON.

2.

Check 1st trip.

3.

If 1st trip DTC is detected, go to 

EC-283, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000005273298

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-283, "DTC Confirmation Procedure"

.

5.

Is the DTC P0607 displayed again?

With GST

1.

Turn ignition switch ON.

2.

Select “Service $04” with GST.

3.

Perform DTC Confirmation Procedure.
See 

EC-283, "DTC Confirmation Procedure"

.

4.

Is the DTC P0607 displayed again?

Yes or No

Yes

>> GO TO 2.

No

>> INSPECTION END

2.

REPLACE ECM

1.

Replace ECM.

2.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

SEC-7, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

.

3.

Perform 

EC-24, "VIN Registration"

.

4.

Perform 

EC-24, "Accelerator Pedal Released Position Learning"

.

5.

Perform 

EC-24, "Throttle Valve Closed Position Learning"

.

6.

Perform 

EC-24, "Idle Air Volume Learning"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0607
0607

CAN communication bus

When detecting error during the initial diagno-
sis for CAN controller of each control unit.

• ECM

EC-284

< COMPONENT DIAGNOSIS >

[QR25DE]

P0607 ECM

>> INSPECTION END

P0643 SENSOR POWER SUPPLY

EC-285

< COMPONENT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0643 SENSOR POWER SUPPLY

On Board Diagnosis Logic

INFOID:0000000005273299

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up. 

DTC Confirmation Procedure

INFOID:0000000005273300

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

 WITH CONSULT-III

1.

Start engine and let it idle for 1 second.

2.

Check DTC.

3.

If DTC is detected, go to 

EC-285, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000005273301

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"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0643
0643

Sensor power supply circuit 
short

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

• Harness or connectors

(APP sensor 1 circuit is shorted.)
(PSP sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is short-
ed.)
(Battery current sensor circuit is shorted.)
(EVAP control system pressure sensor circuit 
is shorted.)

• Accelerator pedal position sensor

(APP sensor 1)

• Power steering pressure sensor
• Refrigerant pressure sensor
• Battery current sensor
• EVAP control system pressure sensor

Engine operation condition in fail-safe mode

ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return 
spring.

BBIA0614E

EC-286

< COMPONENT DIAGNOSIS >

[QR25DE]

P0643 SENSOR POWER SUPPLY

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect accelerator pedal position (APP) sensor harness
connector.

2.

Turn ignition switch ON.

3.

Check voltage between APP sensor terminal 2 and ground with
CONSULT-III or tester.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 3.

3.

CHECK SENSOR POWER SUPPLY CIRCUITS

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

OK or NG

OK

>> GO TO 4.

NG

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

4.

CHECK COMPONENTS

Check the following.
• EVAP control system pressure sensor (Refer to 

EC-238, "Component Inspection"

.)

• Refrigerant pressure sensor (Refer to 

EC-394, "Component Description"

.)

• Battery current sensor (Refer to 

EC-304, "Component Inspection"

.)

• Power steering pressure sensor (Refer to 

EC-278, "Component Inspection"

.)

OK or NG

OK

>> GO TO 5.

NG

>> Replace malfunctioning component.

5.

CHECK APP SENSOR

Refer to 

EC-354, "Component Inspection"

.

OK or NG

OK

>> GO TO 7.

BBIA0592E

Voltage: Approximately 5V

PBIB2608E

ECM terminal

Sensor terminal

90

APP sensor terminal 2

48

EVAP control system pressure sensor terminal 3

49

Refrigerant pressure sensor terminal 3

49

Battery current sensor terminal 1

68

PSP sensor terminal 3