Nissan Versa Sedan. Manual - part 344
P1554 BATTERY CURRENT SENSOR
EC-375
< DTC/CIRCUIT DIAGNOSIS >
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P1554 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000009496837
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to
EC-375, "Component Function Check"
.
NOTE:
Use component function check to check the overall function of the battery current sensor circuit. During this
check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Component Function Check
INFOID:0000000009496838
1.
PRECONDITIONING
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 12.8 V at idle.
• Before performing the following procedure, confirm that all load switches and A/C switch are turned
OFF.
>> GO TO 2.
2.
PERFORM COMPONENT FUNCTION CHECK
With CONSULT
1. Start engine and let it idle.
2. Select “BAT CUR SEN” in “DATA MONITOR” mode with CONSULT.
3. Check “BAT CUR SEN” indication for 10 seconds.
“BAT CUR SEN” should be above 2,300 mV at least once.
Without CONSULT
1. Start engine and let it idle.
2. Check the voltage between ECM harness connector terminals as per the following.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1554
Battery current sensor perfor-
mance
The output voltage of the battery current
sensor is lower than the specified value
while the battery voltage is high enough.
• Harness or connectors
(Battery current sensor circuit is open
or shorted.)
(APP sensor 2 circuit is open or short-
ed.)
(EVAP control system pressure sensor
circuit is shorted.)
[Crankshaft position sensor (POS) cir-
cuit is shorted.]
(Refrigerant pressure sensor circuit is
shorted.)
• Battery current sensor
• Accelerator pedal position sensor
(APP sensor 2)
• EVAP control system pressure sensor
• Crankshaft position sensor (POS)
• Refrigerant pressure sensor