NISSAN

**************************** **************************** Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) A L L Diagnostic Trouble Codes ( DTC ): B Code Charts  Page 60 After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second. - GO TO 3 3.WAIT TIME Wait more than 3 seconds. - GO TO 4 4.REPEAT STEPS Repeat steps 1 to 3 twice. - GO TO 5 5.IGNITION SWITCH Turn ignition switch ON. - GO TO 6 6.DIAGNOSTIC MODE SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnosis Sensor Unit/Trouble Diagnosis Without CONSULT-III. - END Diagnosis Procedure (Component Diagnosis) Recheck SRS after each replacement. 1.HARNESS CONNECTOR Is there any visible damage to the connector? YES or NO YES - Replace the harness. NO - GO TO 2 2.WIRING HARNESS Is there any visible damage to the harness? YES or NO YES - Repl

**************************** **************************** C1146 C1113, C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR Description The yaw rate/side/decel G sensor detects the yaw rate/side/decel G affecting the vehicle, and transmits the data to the ABS actuator and electric Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 58 unit (control unit) as an analog voltage signal. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAGNOSIS RESULTS Check the self-diagnosis results. Is above displayed on the self-diagnosis display? YES - Proceed to diagnosis procedure. See: C1113. NO - Inspection End Diagnosis Procedure Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams. CAUTION: - Sudden turns (such as spin turns, acceleration turns), drifting, etc. when VDC function is OFF may cause the yaw rate/side/decel G sensor system to indicate a malfunct

**************************** **************************** P0158 P0138, P0158 HO2S2 Component Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation. On Board Diagnosis Logic The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. MALFUNCTION A Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 143 T

**************************** **************************** P0157 P0137, P0157 HO2S2 Component Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation. On Board Diagnosis Logic The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the maxi

**************************** **************************** P0150 P0130, P0150 A/F SENSOR 1 Component Description Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 125 The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element. The sensor is capable of precise measurement lambda = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide lambda range. The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich. Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensur

**************************** **************************** P0171 P0171, P0174 FUEL INJECTION SYSTEM FUNCTION On Board Diagnosis Logic With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic). Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 153 DTC Confirmation Procedure NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next step. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ign