Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit (electric Intake Valve Timing Control Module)

Diagnosis Procedure

1. CHECK FUSE

   1. Turn ignition switch OFF.

   2. Pull out 5 A fuse (No. 91) from IPDM E/R.

   3. Check that 5 A fuse is not blowing.

   Is the fuse blown (open)?

   YES >>

   Replace the fuse after repairing the applicable circuit.

   NO >>

   GO TO 2.

2. CHECK FUSIBLE LINK

   1. Turn ignition switch OFF.

   2. Check that the following fusible link is not blowing.

      Fusible link No.	Capacity
      F/L-I	40A

   Is the fusible link blown (open)?

   YES >>

   Replace the fusible link after repairing the applicable circuit.

   NO >>

   GO TO 3.

3. CHECK GROUND CONNECTION

   Check ground connection E9 and E15. Refer to Ground Inspection in Circuit Inspection.

   Is the inspection result normal?

   YES >>

   GO TO 4.

   NO >>

   Repair or replace error-detected parts.

4. CHECK ELECTRIC INTAKE VALVE TIMING CONTROL MODULE GROUND CIRCUIT

   1. Disconnect electric intake valve timing control module harness connectors.

   2. Check the continuity between electric intake valve timing control module harness connector and ground.

      Electric intake valve timing control module		—	Continuity
      Connector	Terminal
      F80	43	Ground	Existed

   3. Also check harness for short to power.

   Is the inspection result normal?

   YES >>

   GO TO 5.

   NO >>

   Repair or replace error-detected parts.

5. CHECK ELECTRIC INTAKE VALVE TIMING CONTROL MODULE POWER SUPPLY

   1. Reconnect electric intake valve timing control module harness connectors.

   2. Check the voltage between electric intake valve timing control module harness connector terminals as follows.

      Electric intake valve timing control module			Voltage
      Connector	+	−
      	Terminal
      F80	47	43	Battery voltage

   Is the inspection result normal?

   YES >>

   GO TO 6.

   NO >>

   Perform trouble diagnosis for power supply circuit.

6. CHECK IGNITION SWITCH SIGNAL

   Check the voltage between electric intake valve timing control module harness connectors as follows.

   Electric intake valve timing control module			Condition	Voltage
   +		−
   Connector	Terminal	Terminal
   F80	39	43	Ignition switch: ON	Battery voltage
   			Ignition switch: OFF	0 V

   Is the inspection result normal?

   YES >>

   Check intermittent incident. Refer to Intermittent Incident.

   NO >>

   GO TO 7.

7. CHECK IGNITION SWITCH SIGNAL

   1. Turn ignition switch OFF.

   2. Disconnect electric intake valve timing control module harness connectors.

   3. Disconnect IPDM E/R harness connector.

   4. Check the continuity between IPDM E/R harness connector and electric intake valve timing control module harness connector.

      IPDM E/R		Electric intake valve timing control module		Continuity
      Connector	Terminal	Connector	Terminal
      E43	19	F80	39	Existed

   5. Also check harness for short to power and short to ground.

   Is the inspection result normal?

   YES >>

   Perform trouble diagnosis for power supply circuit.

   NO >>

   Repair or replace error-detected parts.

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