Component Function Check

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM-ENGINE CONTROL SYSTEM- ".

1. PERFORM COMPONENT FUNCTION CHECK-I

   Without CONSULT 

   1. Start engine and warm it up to the normal operating temperature.
   2. Turn ignition switch OFF and wait at least 10 seconds.
   3. Turn ignition switch ON.
   4. Turn ignition switch OFF and wait at least 10 seconds.
   5. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
   6. Let engine idle for 1 minute.
   7. Check the voltage between ECM harness connector terminals under the following conditions.
      Fig 1: Checking Voltage Between ECM Harness Connector Terminals (Under No Load Condition)

      Courtesy of NISSAN NORTH AMERICA, INC.

      DTC	ECM			Condition	Voltage
      	Connector	+	-
      		Terminal	Terminal
      P0138	F13	33 [HO2S2 (bank 1) signal]	35 (Sensor ground)	Revving up to 4, 000 RPM under no load at least 10 times	The voltage should be below 0.18 V at least once during this procedure.
      P0158		34 [HO2S2 (bank 2) signal]

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: GO TO 2.

2. PERFORM COMPONENT FUNCTION CHECK-II

   Check the voltage between ECM harness connector terminals under the following conditions.

   Fig 2: Checking Voltage Between ECM Harness Connector Terminals (At Idle Engine Condition)

   Courtesy of NISSAN NORTH AMERICA, INC.

   DTC	ECM			Condition	Voltage
   	Connector	+	-
   		Terminal	Terminal
   P0138	F13	33 [HO2S2 (bank 1) signal]	35 (Sensor ground)	Keeping engine speed at idle for 10 minutes	The voltage should be below 0.18 V at least once during this procedure.
   P0158		34 [HO2S2 (bank 2) signal]

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: GO TO 3.

3. PERFORM COMPONENT FUNCTION CHECK-III

   Check the voltage between ECM harness connector terminals under the following conditions.

   Fig 3: Checking Voltage Between ECM Harness Connector Terminals (Coasting From 80 Km/h In D Position)

   Courtesy of NISSAN NORTH AMERICA, INC.

   DTC	ECM			Condition	Voltage
   	Connector	+	-
   		Terminal	Terminal
   P0138	F13	33 [HO2S2 (bank 1) signal]	35 (Sensor ground)	Coasting from 80 km/h (50 MPH) in D position	The voltage should be below 0.18 V at least once during this procedure.
   P0158		34 [HO2S2 (bank 2) signal]

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Go to "DIAGNOSIS PROCEDURE ".