Nissan Quest E52. Instruction — part 535
EC-350
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1550 BATTERY CURRENT SENSOR
P1550 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000009651194
DTC DETECTION LOGIC
NOTE:
If DTC P1550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
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 8 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait at least 10 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651195
1.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY
1.
Disconnect battery current sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between battery current sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
2.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between battery current sensor harness connector and ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1550
Battery current sensor circuit
range/performance
The output voltage of the battery current
sensor remains within the specified
range while engine is running.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Battery current sensor
Battery current sensor
Ground
Voltage (V)
Connector
Terminal
F76
1
Ground
Approx. 5
Battery current sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F76
3
F8
68
Existed
P1550 BATTERY CURRENT SENSOR
EC-351
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between battery current sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK BATTERY CURRENT SENSOR
Check battery current sensor. Refer to
EC-351, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace battery negative cable assembly.
Component Inspection
INFOID:0000000009651196
1.
CHECK BATTERY CURRENT SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect harness connectors disconnected.
3.
Disconnect battery negative cable.
4.
Install jumper cable between battery negative terminal and body
ground.
5.
Turn ignition switch ON.
6.
Check the voltage between ECM harness connector terminals
under the following conditions.
Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
PG-97, "How to Handle Battery"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace battery negative cable assembly.
Battery current sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F76
4
F8
66
Existed
ECM
Voltage (V)
Connector
+
–
Terminal
Terminal
F8
66
(Battery current
sensor signal)
68
(Sensor ground)
Approx. 2.5
JPBIA3287ZZ
EC-352
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1551, P1552 BATTERY CURRENT SENSOR
P1551, P1552 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000009651197
DTC DETECTION LOGIC
NOTE:
If DTC P1551 or P1552 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to
.
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 8 V with ignition
switch ON
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 10 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651198
1.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY
1.
Disconnect battery current sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between battery current sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
2.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between battery current sensor harness connector and ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1551
Battery current sensor circuit
low input
An excessively low voltage from the sen-
sor is sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Battery current sensor
P1552
Battery current sensor circuit
high input
An excessively high voltage from the sen-
sor is sent to ECM.
Battery current sensor
Ground
Voltage (V)
Connector
Terminal
F76
1
Ground
Approx. 5
P1551, P1552 BATTERY CURRENT SENSOR
EC-353
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between battery current sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK BATTERY CURRENT SENSOR
Check battery current sensor. Refer to
EC-351, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace battery negative cable assembly.
Component Inspection
INFOID:0000000009651199
1.
CHECK BATTERY CURRENT SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect harness connectors disconnected.
3.
Disconnect battery negative cable.
4.
Install jumper cable between battery negative terminal and body
ground.
5.
Turn ignition switch ON.
6.
Check the voltage between ECM harness connector terminals
under the following conditions.
Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
PG-97, "How to Handle Battery"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace battery negative cable assembly.
Battery current sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F76
3
F8
68
Existed
Battery current sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F76
4
F8
66
Existed
ECM
Voltage (V)
Connector
+
–
Terminal
Terminal
F8
66
(Battery current
sensor signal)
68
(Sensor ground)
Approx. 2.5
JPBIA3287ZZ
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