Nissan Frontier D40. Manual — part 516
P0605 ECM
EC-755
< COMPONENT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0605 ECM
Component Description
INFOID:0000000005273736
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
INFOID:0000000005273737
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
INFOID:0000000005273738
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 perform the following before conduct-
ing the next step.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
PROCEDURE FOR MALFUNCTION A
1.
Turn ignition switch ON.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
PROCEDURE FOR MALFUNCTION B
With CONSULT-III
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
PROCEDURE FOR MALFUNCTION C
With CONSULT-III
1.
Turn ignition switch ON and wait at least 1 second.
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.
EC-756
< COMPONENT DIAGNOSIS >
[VQ40DE]
P0605 ECM
2.
Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
3.
Repeat step 2 for 32 times.
4.
Check 1st trip DTC.
5.
If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000005273739
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-755, "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-755, "DTC Confirmation Procedure"
4.
Is the 1st trip DTC P0605 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, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"
.
3.
4.
EC-473, "Accelerator Pedal Released Position Learning"
5.
EC-473, "Throttle Valve Closed Position Learning"
6.
EC-473, "Idle Air Volume Learning"
.
>> INSPECTION END
P0607 ECM
EC-757
< COMPONENT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0607 ECM
Description
INFOID:0000000005273740
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:0000000005273741
This self-diagnosis has the one trip detection logic.
DTC Confirmation Procedure
INFOID:0000000005273742
1.
Turn ignition switch ON.
2.
Check DTC.
3.
If DTC is detected, go to
.
Diagnosis Procedure
INFOID:0000000005273743
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-757, "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-757, "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, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"
.
3.
4.
EC-473, "Accelerator Pedal Released Position Learning"
.
5.
EC-473, "Throttle Valve Closed Position Learning"
6.
EC-473, "Idle Air Volume Learning"
.
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0607
0607
CAN communication bus
When detecting error during the initial diagno-
sis of CAN controller of ECM.
• ECM
EC-758
< COMPONENT DIAGNOSIS >
[VQ40DE]
P0643 SENSOR POWER SUPPLY
P0643 SENSOR POWER SUPPLY
On Board Diagnosis Logic
INFOID:0000000005273744
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 illuminates.
DTC Confirmation Procedure
INFOID:0000000005273745
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next step.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
1.
Start engine and let it idle for 1 second.
2.
Check 1st trip DTC.
3.
If DTC is detected, go to
.
Diagnosis Procedure
INFOID:0000000005273746
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten three ground three screws on the body. Refer to
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)
• EVAP control system pressure sensor
• Power steering pressure sensor
• Refrigerant pressure sensor
• Battery current 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.
BBIA0539E
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