Infiniti M45 (Y34). Manual — part 432
DTC P0650 MIL
EC-417
C
D
E
F
G
H
I
J
K
L
M
A
EC
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
EC-418
DTC P1065 ECM POWER SUPPLY
DTC P1065 ECM POWER SUPPLY
PFP:23710
Component Description
ABS002MI
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
ABS002MJ
DTC Confirmation Procedure
ABS002MK
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 four times.
6.
If 1st trip DTC is detected, go to
EC-420, "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-419
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
ABS002ML
TBWA0320E
EC-420
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
ABS002MM
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-20
●
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
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