Infiniti F50. Manual - part 443

 

  Index      Infiniti     Infiniti F50 - service repair manual 2006 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  441  442  443  444   ..

 

 

Infiniti F50. Manual - part 443

 

 

DTC P0650 MIL

EC-413

C

D

E

F

G

H

I

J

K

L

M

A

EC

4. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors F105, M135

Harness for open or short between ECM and combination meter

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

5. 

CHECK COMBINATION METER

1.

Turn ignition switch “OFF”.

2.

Disconnect combination meter harness connector.

3.

Check continuity under the following conditions.

OK or NG

OK

>> GO TO 6.

NG

>> Replace combination meter. Refer to 

DI-27, "Removal and Installation for Combination Meter"

 .

6. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

CONDITION

Combination meter terminal No. (Polarity)

Continuity

1

65 (+) - 59 (–)

Should exist.

2

59 (+) - 65 (–)

Should not exist.

PBIB1399E

EC-414

DTC P1065 ECM POWER SUPPLY

DTC P1065 ECM POWER SUPPLY

PFP:23710

Component Description

EBS00MGR

Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air vol-
ume learning value memory, etc.

On Board Diagnosis Logic

EBS00MGS

DTC Confirmation Procedure

EBS00MGT

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.

 WITH CONSULT-II

1.

Turn ignition switch “ON” and wait at least 1 second.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and let it idle for 1 second.

4.

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

5.

Repeat steps 3 and 4 for 4 times.

6.

If 1st trip DTC is detected, go to 

EC-416, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF093X

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1065
1065

ECM power supply circuit

ECM back-up RAM system does not 
function properly.

Harness or connectors
[ECM power supply (back-up) circuit is 
open or shorted.]

ECM

SEF058Y

DTC P1065 ECM POWER SUPPLY

EC-415

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

EBS00MGU

TBWM0106E

EC-416

DTC P1065 ECM POWER SUPPLY

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

EBS00MGV

1. 

CHECK ECM POWER SUPPLY

1.

Turn ignition switch “OFF”.

2.

Disconnect ECM harness connector.

3.

Check voltage between ECM terminal 95 and ground with CON-
SULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors M135, F105

Joint connector-16

Fuse block (J/B) No.2 connector M145

10A fuse

Harness for open or short between ECM and battery

>> Repair or replace harness or connectors.

3. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness or connectors.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

95

W

Power supply for ECM 
(Back-up)

[Ignition switch “OFF”]

BATTERY VOLTAGE
(11 - 14V)

Voltage: Battery voltage

PBIB0087E

 

 

 

 

 

 

 

Content   ..  441  442  443  444   ..