Nissan Quest E52. Instruction — part 531
EC-334
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0603 ECM POWER SUPPLY
2.
Erase DTC.
3.
Perform DTC CONFIRMATION PROCEDURE.
See
Is the 1st trip DTC P0603 displayed again?
YES
>> Replace ECM. Refer to
EC-460, "Removal and Installation"
NO
>> INSPECTION END
P0605 ECM
EC-335
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0605 ECM
DTC Logic
INFOID:0000000009651170
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
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.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1.
Turn ignition switch ON.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1.
Turn ignition switch ON and wait at least 1 second.
2.
Turn ignition switch OFF, wait at least 10 seconds, and then turn it ON.
3.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> GO TO 4.
4.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1.
Turn ignition switch ON and wait at least 1 second.
2.
Turn ignition switch OFF, wait at least 10 seconds, and then turn it ON.
3.
Repeat step 2 for 32 times.
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651171
1.
INSPECTION START
1.
Turn ignition switch ON.
2.
Erase DTC.
3.
Perform DTC CONFIRMATION PROCEDURE.
See
.
Is the 1st trip DTC P0605 displayed again?
YES
>> Replace ECM. Refer to
EC-460, "Removal and Installation"
NO
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0605
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.
EC-336
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0607 ECM
P0607 ECM
DTC Logic
INFOID:0000000009651172
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651173
1.
INSPECTION START
1.
Turn ignition switch ON.
2.
Erase DTC.
3.
Perform DTC CONFIRMATION PROCEDURE.
See
4.
Check DTC.
Is the DTC P0607 displayed again?
Yes
>> Replace ECM. Refer to
EC-460, "Removal and Installation"
No
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0607
CAN communication bus
When detecting error during the initial diagno-
sis of CAN controller of ECM.
• ECM
P0643 SENSOR POWER SUPPLY
EC-337
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0643 SENSOR POWER SUPPLY
DTC Logic
INFOID:0000000009651174
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
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 10 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC
Is DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651175
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY
1.
Disconnect accelerator pedal position (APP) sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P0643
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.)
(TP sensor circuit is shorted.)
[CMP sensor (PHASE) circuit is shorted.)
(Battery current sensor circuit is shorted.)
• Accelerator pedal position sensor
• Throttle position sensor
• Camshaft position sensor (PHASE)
• Battery current sensor
APP sensor
Ground
Voltage (V)
Connector
Terminal
E110
4
Ground
Approx. 5
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