P0058 P0037, P0038, P0057, P0058 HO2S2 HEATER

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P0058
P0037, P0038, P0057, P0058 HO2S2 HEATER
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine
coolant temperature.
OPERATION
On Board Diagnosis Logic
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 51
DTC Confirmation Procedure
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5 V and 16 V at idle.
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 the engine and keep the engine speed between 3,500 rpm and 4,000 rpm for at least 1 minute under no load.
6. Let engine idle for 1 minute.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to See: P0037.
Diagnosis Procedure
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Power Supply And Ground Circuit/Ground Inspection.
OK or NG
OK - GO TO 2.
NG - Repair or replace ground connections.
2.CHECK HO2S2 POWER SUPPLY CIRCUIT
1. Disconnect heated oxygen sensor 2 harness connector.
2. Turn ignition switch ON.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 52
3. Check voltage between HO2S2 terminal 3 and ground with
CONSULT-III or tester.
Voltage: Battery voltage
OK or NG
OK - GO TO 4.
NG - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E5, F14
- IPDM E/R harness connector E119
- 15 A fuse (No. 54)
- Harness for open or short between heated oxygen sensor 2 and fuse
- Repair harness or connectors.
4.CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK - GO TO 5.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HEATED OXYGEN SENSOR 2 HEATER
See: P0037.
OK or NG
OK - GO TO 6.
NG - Replace malfunctioning heated oxygen sensor 2.
6.CHECK INTERMITTENT INCIDENT
See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Check Terminal and See: Testing and Inspection/Initial
Inspection and Diagnostic Overview/Intermittent Incident.
- INSPECTION END
Component Inspection
HEATED OXYGEN SENSOR 2 HEATER
1. Check resistance between HO2S2 terminals as follows.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 53
2. If NG, replace heated oxygen sensor 2.
CAUTION:
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a
concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or
J-43897-12 and approved anti-seize lubricant.

P0057 P0037, P0038, P0057, P0058 HO2S2 HEATER

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P0057
P0037, P0038, P0057, P0058 HO2S2 HEATER
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine
coolant temperature.
OPERATION
On Board Diagnosis Logic
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 48
DTC Confirmation Procedure
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5 V and 16 V at idle.
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 the engine and keep the engine speed between 3,500 rpm and 4,000 rpm for at least 1 minute under no load.
6. Let engine idle for 1 minute.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to See: P0037.
Diagnosis Procedure
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Power Supply And Ground Circuit/Ground Inspection.
OK or NG
OK - GO TO 2.
NG - Repair or replace ground connections.
2.CHECK HO2S2 POWER SUPPLY CIRCUIT
1. Disconnect heated oxygen sensor 2 harness connector.
2. Turn ignition switch ON.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 49
3. Check voltage between HO2S2 terminal 3 and ground with
CONSULT-III or tester.
Voltage: Battery voltage
OK or NG
OK - GO TO 4.
NG - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E5, F14
- IPDM E/R harness connector E119
- 15 A fuse (No. 54)
- Harness for open or short between heated oxygen sensor 2 and fuse
- Repair harness or connectors.
4.CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK - GO TO 5.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HEATED OXYGEN SENSOR 2 HEATER
See: P0037.
OK or NG
OK - GO TO 6.
NG - Replace malfunctioning heated oxygen sensor 2.
6.CHECK INTERMITTENT INCIDENT
See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Check Terminal and See: Testing and Inspection/Initial
Inspection and Diagnostic Overview/Intermittent Incident.
- INSPECTION END
Component Inspection
HEATED OXYGEN SENSOR 2 HEATER
1. Check resistance between HO2S2 terminals as follows.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 50
2. If NG, replace heated oxygen sensor 2.
CAUTION:
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a
concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or
J-43897-12 and approved anti-seize lubricant.

C1184 C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER

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C1184
C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER
Description
The active brake booster consists of a vacuum booster, an active booster control group and a delta stroke sensor. If a brake booster system
malfunction occurs due to loss of vacuum, the delta stroke sensor will signal the ABS actuator and electric unit (control unit) that a booster
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 79
malfunction has occurred. The active booster then applies supplemental force to the master cylinder relative to the amount of force exerted on the
brake pedal.
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: C1178.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the active booster connector and ABS actuator and electric unit (control unit) connector and inspect the terminals for deformation,
disconnection, looseness, or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair connector.
2.ACTIVE BOOSTER CIRCUIT INSPECTION
1. Measure the continuity between ABS actuator and electric unit
(control unit) connector E125 (A) and active booster connector
E49 (B).
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 80
2. Measure the continuity between ABS actuator and electric unit (control unit) connector E125 (A) and body ground.
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness or connector.
3.ACTIVE BOOSTER INSPECTION
1. Reconnect the active booster and ABS actuator and electric unit (control unit) connectors.
2. Perform the active booster component inspection. See: C1178.
Is the inspection result normal?
YES - Replace the ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Replace the active booster. See: Brakes and Traction Control/Power Brake Assist/Vacuum Brake Booster/Service and Repair/Removal and
Replacement/Removal And Installation.
Component Inspection
1.CHECK DATA MONITOR
Use "DATA MONITOR" to check if the status of "RELEASE SWITCH NO" and "RELEASE SWITCH NC" is normal.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1178.
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END

C1167 C1164, C1165, C1166, C1167 CV/SV SYSTEM

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C1167
C1164, C1165, C1166, C1167 CV/SV SYSTEM
Description
CV1, CV2 (CUT VALVE)
The cut valve shuts off the normal brake fluid path from the master cylinder, when VDC/TCS is activated.
SV1, SV2 (SUCTION VALVE)
The suction valve supplies the brake fluid from the master cylinder to the pump, when VDC/TCS is activated.
DTC Logic
DTC DETECTION LOGIC
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 71
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: C1164.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check voltage between ABS actuator and electric unit (control unit) connector E125 terminal 32 and ground.
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace malfunctioning components.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 72
3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 16, 47 and ground.
Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Repair or replace malfunctioning components.
Component Inspection
1.CHECK ACTIVE TEST
1. Select each test menu item on "ACTIVE TEST".
2. On the display, touch "Up", "ACT UP", and "ACT KEEP", and check that the system operates as shown in the table below.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1164.
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END

Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) P CODE Page 114

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Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 114
Without CONSULT-III
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) signal] and ground.
6. Check the voltage when revving up to 4,000 rpm under no load at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.58 V and below 0.18 V at least once during this procedure.
If the voltage can be confirmed at step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position.
The voltage should be above 0.58 V and below 0.18V at least once during this procedure.
8. If NG, replace heated oxygen sensor 2.
CAUTION:
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (1.6 ft) onto a hard surface such as a
concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

P0131 P0131, P0151 A/F SENSOR 1

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Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 100
- INSPECTION END
P0131
P0131, P0151 A/F SENSOR 1
Component Description
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
ensure the required operating temperature of about 800癈 (1,472癋).
On Board Diagnosis Logic
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately low.
DTC Confirmation Procedure
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT-III.
3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication.
If the indication is constantly approx. 0 V, go to See: P0131.
If the indication is not constantly approx. 0 V, go to next step.
4. Turn ignition switch OFF, wait at least 10 seconds and then restart engine.
5. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.
6. Maintain the following conditions for about 20 consecutive seconds.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 101
NOTE:
- Keep the accelerator pedal as steady as possible during the cruising.
- If this procedure is not completed within 1 minute after restarting engine at step 4, return to step 4.
7. Check 1st trip DTC.
8. If 1st trip DTC is displayed, go to See: P0131.
WITH GST
Follow the procedure "WITH CONSULT-III" above.
Diagnosis Procedure
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Power Supply And Ground Circuit/Ground Inspection.
OK or NG
OK - GO TO 2.
NG - Repair or replace ground connections.
2.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect A/F sensor 1 harness connector.
2. Turn ignition switch ON.
3. Check voltage between A/F sensor 1 terminal 4 and ground with
CONSULT-III or tester.
Voltage: Battery voltage
OK or NG
OK - GO TO 4.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  P CODE Page 102
NG - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E5, F14
- IPDM E/R harness connector E119
- 15 A fuse (No. 54)
- Harness for open or short between A/F sensor 1 and fuse
- Repair or replace harness or connectors.
4.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to Wiring Diagram.
Continuity should exist.
4. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram.
Continuity should not exist.
5. Also check harness for short to power.
OK or NG
OK - GO TO 5.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK INTERMITTENT INCIDENT
See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Check Terminal and See: Testing and Inspection/Initial
Inspection and Diagnostic Overview/Intermittent Incident.
OK or NG
OK - GO TO 6.
NG - Repair or replace.
6.REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1.
CAUTION:
- Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (1.6 ft) onto a hard surface such as a
concrete floor; use a new one.
- Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads (using Oxygen Sensor Thread Cleaner tool J-43897-18
or J-43897-12) and approved anti-seize lubricant.
- INSPECTION END

C1181 C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER

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C1181
C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER
Description
The active brake booster consists of a vacuum booster, an active booster control group and a delta stroke sensor. If a brake booster system
malfunction occurs due to loss of vacuum, the delta stroke sensor will signal the ABS actuator and electric unit (control unit) that a booster
malfunction has occurred. The active booster then applies supplemental force to the master cylinder relative to the amount of force exerted on the
brake pedal.
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: C1178.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the active booster connector and ABS actuator and electric unit (control unit) connector and inspect the terminals for deformation,
disconnection, looseness, or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair connector.
2.ACTIVE BOOSTER CIRCUIT INSPECTION
1. Measure the continuity between ABS actuator and electric unit
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 78
(control unit) connector E125 (A) and active booster connector
E49 (B).
2. Measure the continuity between ABS actuator and electric unit (control unit) connector E125 (A) and body ground.
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness or connector.
3.ACTIVE BOOSTER INSPECTION
1. Reconnect the active booster and ABS actuator and electric unit (control unit) connectors.
2. Perform the active booster component inspection. See: C1178.
Is the inspection result normal?
YES - Replace the ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Replace the active booster. See: Brakes and Traction Control/Power Brake Assist/Vacuum Brake Booster/Service and Repair/Removal and
Replacement/Removal And Installation.
Component Inspection
1.CHECK DATA MONITOR
Use "DATA MONITOR" to check if the status of "RELEASE SWITCH NO" and "RELEASE SWITCH NC" is normal.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1178.
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END

C1144 C1143, C1144 STEERING ANGLE SENSOR

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C1144
C1143, C1144 STEERING ANGLE SENSOR
Description
The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel, and transmits the data to the ABS
actuator and electric unit (control unit) via CAN communication.
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: C1143.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect steering angle sensor connector.
4. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
5. Reconnect connectors and then perform the self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK STEERING ANGLE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect steering angle sensor connector.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 55
3. Check continuity between steering angle sensor connector M17 terminal 2 and ground.
4. Turn ignition switch ON.
5. Check voltage between steering angle sensor connector M17 terminal 3 and ground.
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace malfunctioning components.
3.STEERING ANGLE SENSOR INSPECTION
1. Connect the steering angle sensor connector and ABS actuator and electric unit (control unit) connector.
2. Perform the steering angle sensor component inspection. See: C1143.
Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Replace steering angle sensor and adjust neutral position of steering angle sensor. See: Brakes and Traction Control/Antilock Brakes /
Traction Control Systems/Steering Angle Sensor/Service and Repair.
Component Inspection
1.CHECK DATA MONITOR
Select "STR ANGLE SIG" in "DATA MONITOR" and check steering angle sensor signal.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1143.
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 56
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END

C1140 C1140 ACTUATOR RLY

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C1140
C1140 ACTUATOR RLY
Description
Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and electric unit (control unit).
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: C1140.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 49
4. Reconnect connectors and then perform the self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check voltage between ABS actuator and electric unit (control unit) connector E125 terminal 32 and ground.
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace malfunctioning components.
3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 16, 47 and ground.
Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Repair or replace malfunctioning components.
Component Inspection
1.CHECK ACTIVE TEST
1. On "ACTIVE TEST", select "ABS MOTOR".
2. Touch "On" and "Off" on screen. Make sure motor relay and actuator relay operates as shown in table below.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1140.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 50
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END

C1126 C1120, C1122, C1124, C1126 IN ABS SOL

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C1126
C1120, C1122, C1124, C1126 IN ABS SOL
Description
The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the signals transmitted by the ABS actuator
and electric unit (control unit).
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: C1120.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 41
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check voltage between ABS actuator and electric unit (control unit) connector E125 terminal 32 and ground.
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace malfunctioning components.
3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 16, 47 and ground.
Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Repair or replace malfunctioning components.
Component Inspection
1.CHECK ACTIVE TEST
1. Select each test menu item on "ACTIVE TEST".
2. On the display, touch "Up", "Keep", and "Down", and check that the system operates as shown in the table below.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 42
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1120.
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END

C1113 C1113, C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR

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C1113
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
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 malfunction. This is not a malfunction if normal operation can be resumed after restarting the engine.
- If vehicle is on turn table at entrance to parking garage, or on other moving surface, VDC OFF indicator lamp may illuminate and
CONSULT-III self-diagnosis may indicate yaw rate sensor system malfunction. However, in this case there is no malfunction in yaw
rate sensor system. Take vehicle off of turn table or other moving surface, and start engine. Results will return to normal.
1.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (control unit) connector and yaw rate/side/decel G sensor connector.
2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair or replace as necessary.
2.YAW RATE/SIDE/DECEL G SENSOR HARNESS INSPECTION
Check continuity between the ABS actuator and electric unit (control unit) connector E125 (A) and the yaw rate/side/decel G sensor connector
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE)  C CODE Page 24
M108 (B).
Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace as necessary.
3.YAW RATE/SIDE/DECEL G SENSOR INSPECTION
1. Connect the yaw rate/side/decel G sensor connector and ABS actuator and electric unit (control unit) connector.
2. Perform the yaw rate/side/decel G sensor component inspection. See: C1113.
Is the inspection result normal?
YES - Replace the ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Replace the yaw rate/side/decel G sensor. See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate
Sensor/Service and Repair.
Component Inspection
1.CHECK DATA MONITOR
Select "YAW RATE SEN", "SIDE G-SENSOR", "DECEL G-SEN" in "DATA MONITOR" and check yaw rate/side/decel G sensor signal.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1113.
Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END