Nissan Pathfinder. Manual — part 515
EC-366
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1550 BATTERY CURRENT SENSOR
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
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-367, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace battery negative cable assembly.
Component Inspection
INFOID:0000000009178281
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-86, "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
F34
3
F52
68
Existed
Battery current sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F34
4
F52
66
Existed
ECM
Voltage (V)
Connector
+
–
Terminal
Terminal
F52
66
68
Approx. 2.5
JPBIA3287ZZ
P1551, P1552 BATTERY CURRENT SENSOR
EC-367
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1551, P1552 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000009178282
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:0000000009178283
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
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.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1551
BAT CURRENT SENSOR
(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
BAT CURRENT SENSOR
(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
F34
1
Ground
Approx. 5
EC-368
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1551, P1552 BATTERY CURRENT SENSOR
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
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-373, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace battery negative cable assembly.
Component Inspection
INFOID:0000000009178284
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-86, "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
F34
3
F52
68
Existed
Battery current sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F34
4
F52
66
Existed
ECM
Voltage (V)
Connector
+
–
Terminal
Terminal
F52
66
68
Approx. 2.5
JPBIA3287ZZ
P1553 BATTERY CURRENT SENSOR
EC-369
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1553 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000009178285
DTC DETECTION LOGIC
NOTE:
If DTC P1553 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:0000000009178286
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
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.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1553
BAT CURRENT SENSOR
(Battery current sensor perfor-
mance)
The signal voltage transmitted from the
sensor to ECM is higher than the amount
of the maximum power generation.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Battery current sensor
Battery current sensor
Ground
Voltage (V)
Connector
Terminal
F34
1
Ground
Approx. 5
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