Infiniti G35 (V35). Manual - part 404

DTC P0605 ECM

EC-497

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PROCEDURE FOR MALFUNCTION B

 With CONSULT-II

1.

Turn ignition switch ON and wait at least 1 second.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.

4.

If 1st trip DTC is detected, go to 

EC-497, "Diagnostic Procedure"

.

 With GST

Follow the procedure “With CONSULT-II” above.

PROCEDURE FOR MALFUNCTION C

 With CONSULT-II

1.

Turn ignition switch ON and wait at least 1 second.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.

4.

Repeat step 3 for 32 times.

5.

If 1st trip DTC is detected, go to 

EC-497, "Diagnostic Procedure"

.

 With GST

Follow the procedure “With CONSULT-II” above.

Diagnostic Procedure

NBS000V2

1. 

INSPECTION START

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “SELF DIAG RESULTS” mode with CONSULT-II.

3.

Touch “ERASE”.

4.

Perform DTC Confirmation Procedure.
See 

EC-496, "DTC Confirmation Procedure"

 .

5.

Is the 1st trip DTC P0605 displayed again?

 With GST

1.

Turn ignition switch ON.

2.

Select Service $04 with GST.

3.

Perform DTC Confirmation Procedure.
See 

EC-496, "DTC Confirmation Procedure"

 .

4.

Is the 1st trip DTC P0605 displayed again?

Yes or No

Yes

>> GO TO 2.

No

>> INSPECTION END

SEF058Y

SEF058Y

EC-498

DTC P0605 ECM

2. 

REPLACE ECM

1.

Replace ECM.

2.

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

BL-217, "ECM Re-Communicating Function"

 .

3.

Perform 

EC-77, "VIN Registration"

 .

4.

Perform 

EC-78, "Exhaust Valve Timing Control Learning (M/T models)"

 .

5.

Perform 

EC-79, "Accelerator Pedal Released Position Learning"

 .

6.

Perform 

EC-79, "Throttle Valve Closed Position Learning"

 .

7.

Perform 

EC-79, "Idle Air Volume Learning"

 .

>> INSPECTION END

DTC P0643 SENSOR POWER SUPPLY

EC-499

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DTC P0643 SENSOR POWER SUPPLY

PFP:18919

On Board Diagnosis Logic

NBS000XT

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

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

DTC Confirmation Procedure

NBS000XU

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-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and let it idle for 1 second.

4.

If DTC is detected, go to 

EC-502, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P0643
0643

Sensor power supply 
circuit short

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

●

Harness or connectors
(The APP sensor 1 circuit is shorted.)
(The EVAP control system pressure sensor 
circuit is shorted.)
(The PSP sensor circuit is shorted.)
(The refrigerant pressure sensor circuit is 
shorted.)

●

Accelerator pedal position sensor
(APP sensor 1)

●

EVAP control system pressure sensor

●

Power steering pressure sensor

●

Refrigerant 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.

SEF058Y

EC-500

DTC P0643 SENSOR POWER SUPPLY

Wiring Diagram

NBS000XV

TBWB0083E