Nissan Sentra B18 (2020-2025) Service Manual: P34c8 Electric Intake Valve Timing Control Module

Nissan Sentra B18 (2020-2025) Service Manual / Engine / Work Procedure (After Replacing Electric Throttle Control Actuator) / Dtc/circuit Diagnosis / P34c8 Electric Intake Valve Timing Control Module

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P34C8	Camshaft position control module (Camshaft position control module performance)	Diagnosis condition	Ignition switch ON
		Signal (terminal)	—
		Threshold	Internal CPU error is detected
		Diagnosis delay time	—

POSSIBLE CAUSE

Electric intake valve timing (IVT) control module

FAIL-SAFE

Engine Control System

Engine operating condition in fail-safe mode
Fail safe mode		Nissan Sentra Vehicle behavior
Device fix mode		This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position. The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).
Combustion control mode	Stratified charge combustion control at starting	No stratified charge combustion at starting (cold start).
	Idle speed control	Stops feedback control of idle speed and controls with specified speed.
	Recovery speed control at decelerating	Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.
	Idle neutral control	Stops idle neutral control.
Others		ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)

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 turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>>
GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC 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

REPLACE ELECTRIC INTAKE VALVE TIMING (IVT) CONTROL MODULE

Replace electric IVT control module. Refer to Removal & Installation.

>>
INSPECTION END

P34af Electric Intake Valve Timing Control Position Sensor

Dtc Description DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms ( ...

Component Parts /circuit Diagnosis

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Other materials:

Side Oil Seal
Removal and Installation Removal and Installation REMOVAL Remove front drive shafts. Refer to Removal and Installation (LH)and Removal and Installation (RH). Remove differential side oil seals (1) from clutch housing and transaxle case using a suitable tool. CAUTION: ...

Clutch Master Cylinder (clutch Switch)
Component Function Check Component Function Check CHECK FUNCTION CONSULT Ignition switch ON. Select “INTELLIGENT KEY” mode of “BCM”. ...

Symptom Table
Symptom Table Note: Perform the self-diagnosis with CONSULT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected. Symptom Possible cause ...