Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION START
Will CONSULT be used?

Will CONSULT be used?

YES: GO TO 2.

NO: GO TO 3.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT
1. Turn ignition switch OFF and then ON.
2. Select "VENT CONTROL/V" in "ACTIVE TEST" mode with CONSULT.
3. Touch "ON/OFF" on CONSULT screen.
4. Check for operating sound of the valve.
  Clicking sound should be heard.
  
  Is the inspection result normal?
  
  YES: GO TO 7.
  
  NO: GO TO 3.

CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect EVAP canister vent control valve harness connector.
Turn ignition switch ON.

Check the voltage between EVAP canister vent control valve harness connector and ground.

EVAP canister vent control valve		Ground	Voltage
Connector	Terminal	Ground	Voltage
B253	1	Ground	Battery voltage

Is the inspection result normal?

YES: GO TO 5.

NO: GO TO 4.

DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E106, M6
- Harness connectors B201, M117
- Harness connectors B101, B102
- Harness for open or short between EVAP canister vent control valve and IPDM E/R
  : Repair open circuit, short to ground or short to power in harness or connectors.

CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between EVAP canister vent control valve harness connector and ECM harness connector.

EVAP canister vent control valve		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B253	2	M160	127	Existed

Also check harness for short to ground and short to power.
Is the inspection result normal?

YES: GO TO 7.

NO: GO TO 6.

DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors B201, M117
- Harness connectors B101, B102
- Harness for open or short between EVAP canister vent control valve and ECM
  : Repair open circuit, short to ground or short to power in harness or connectors.
CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
  Is the inspection result normal?
  
  YES: GO TO 8.
  
  NO: Clean the rubber tube using an air blower.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 9.

NO: Replace EVAP canister vent control valve. Refer to "VK50VE: EXPLODED VIEW ".
CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

: INSPECTION END