Infiniti M35/M45 Y50. Manual — part 679
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DTC P0603 ECM POWER SUPPLY
EC-1189
[VK45DE]
C
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EC
4.
PERFORM DTC CONFIRMATION PROCEDURE
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-1186, "DTC Confirmation Procedure"
5.
Is the 1st trip DTC P0603 displayed again?
With GST
1.
Turn ignition switch ON.
2.
Select Service $04 with GST.
3.
Perform DTC Confirmation Procedure.
See
EC-1186, "DTC Confirmation Procedure"
4.
Is the 1st trip DTC P0603 displayed again?
Yes or No
Yes
>> GO TO 5.
No
>> INSPECTION END
5.
REPLACE ECM
1.
Replace ECM.
2.
Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-248, "ECM Re-Communicating Function"
3.
Perform
4.
Perform
EC-788, "Accelerator Pedal Released Position Learning"
5.
Perform
EC-788, "Throttle Valve Closed Position Learning"
6.
Perform
EC-788, "Idle Air Volume Learning"
>> INSPECTION END
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EC-1190
[VK45DE]
DTC P0605 ECM
DTC P0605 ECM
PFP:23710
Component Description
NBS005JU
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis Logic
NBS005JV
This self-diagnosis has one or two trip detection logic.
FAIL-SAFE MODE
ECM enters fail-safe mode when the malfunction A is detected.
DTC Confirmation Procedure
NBS005JW
Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform
PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION
B, perform PROCEDURE FOR MALFUNCTION C.
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.
PROCEDURE FOR MALFUNCTION A
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
If 1st trip DTC is detected, go to
.
With GST
Follow the procedure “With CONSULT-II” above.
PBIB1164E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0605
0605
Engine control module
A)
ECM calculation function is malfunctioning.
●
ECM
B)
ECM EEP-ROM system is malfunctioning.
C)
ECM self shut-off function is malfunctioning.
Detected items
Engine operation condition in fail-safe mode
Malfunction A
●
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx.
5 degrees) by the return spring.
●
ECM deactivates ASCD operation.
SEF058Y
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DTC P0605 ECM
EC-1191
[VK45DE]
C
D
E
F
G
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M
A
EC
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
.
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
.
With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic Procedure
NBS005JX
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-1190, "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-1190, "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-1192
[VK45DE]
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-248, "ECM Re-Communicating Function"
3.
Perform
4.
Perform
EC-788, "Accelerator Pedal Released Position Learning"
5.
Perform
EC-788, "Throttle Valve Closed Position Learning"
.
6.
Perform
EC-788, "Idle Air Volume Learning"
.
>> INSPECTION END
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