Nissan Sentra B18 (2020-2025) Service Manual: P155f Generator Voltage

Nissan Sentra B18 (2020-2025) Service Manual / Engine / Work Procedure (After Replacing Electric Throttle Control Actuator) / Dtc/circuit Diagnosis / P155f Generator Voltage

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P155F	GENERATOR VOLTAGE (GENERATOR VOLTAGE)	Diagnosis condition	Ignition switch ON
		Signal (terminal)	ECM power supply
		Threshold	Battery voltage measured by ECM below threshold.
		Diagnosis delay time	20 seconds or more

POSSIBLE CAUSE

ECM
Generator

FAIL-SAFE

Engine Control System

Not applicable

Idle Start/Stop System

When a DTC is detected, the start/stop indicator lamp blinks slowly and the idle start/stop system operation is prohibited.

When ECM detects error while operating the idle start/stop system, ECM restarts the engine.

Confirmation Procedure

Confirmation Procedure

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting 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 11 V at idle.

>>
GO TO 2.
DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 20 seconds.
2. Check DTC.
Witch DTC is detected?
YES >>
Refer to DTC Diagnosis Procedure.
NO-1 >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2 >>
Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK CHARGE SYSTEM

Check charge system. Refer to Work Flow (With 165-DSS-5000P) or Work Flow (Without 165-DSS-5000P).

Witch DTC is detected?
YES >>
INSPECTION END
NO >>
Repair or replace the error-detected parts.

P155e Generator Voltage

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P1564 Ascd Steering Switch

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Other materials:

Fuel-filler door
Opener operation The fuel-filler door release for the Nissan Sentra is located below the instrument panel. To open the fuel-filler door, pull the release lever firmly. To lock and secure the fuel-filler door, simply close it until it is fully seated and latched. Fuel-filler cap WARNING ...

Oil filter
Removal and Installation REMOVAL Remove engine under cover. Refer to EXT-16, "Exploded View". Drain engine oil. Refer to LU-8, "Draining". Remove the oil filter using Tool (A) as shown. : Front Tool number : KV10115801 (J-38956) WARNING: Be careful not to burn you ...

Precaution for work
When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a ...