Nissan Qashqai J11. Manual - part 237
ECH-246
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
P0641 SENSOR POWER SUPPLY
P0641 SENSOR POWER SUPPLY
DTC Logic
INFOID:0000000010379139
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
Turn ignition switch OFF and wait at least 12 minutes.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check trip DTC.
Is DTC detected?
YES
>> Proceed to
ECH-246, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010379140
1.
CHECK SENSOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> GO TO 2.
2.
CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0641
SENSOR REFERENCE
VOLTAGE A
(Sensor reference voltage “A”
circuit/open)
• ECM detects that the voltage of power
source for sensor remains at more than 5.5
V for 0.15 second or more.
• ECM detects that the voltage of power
source for sensor remains at less than 4.5
V for 0.15 second or more.
• Harness or connectors
(The APP sensor 2 power supply circuit)
(Intake manifold pressure sensor power
supply circuit)
(Refrigerant pressure sensor power sup-
ply circuit)
(Crankshaft position sensor power sup-
ply circuit)
• Accelerator pedal position sensor 2
• Intake manifold pressure sensor
• Refrigerant pressure sensor
• Crankshaft position sensor
+
−
Voltage
(Approx.)
ECM
Connectors
Terminal
E9
23
Ground
5.0 V
F18
117
F17
57
F17
41