Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSINFINITI2013QX56 AWD V8-5.6L (VK56VD)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUS
2013 Infiniti QX56 AWD V8-5.6L (VK56VD)
Information Bus
2013 Infiniti QX56 AWD V8-5.6L (VK56VD)SECTION Information Bus
Service Precautions
Description and Operation
Testing and Inspection- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Symptom Related Diagnostic Procedures
- Component Tests and General Diagnostics
- Main Line Between ABS and DLC Circuit
- Main Line Between ADP and PWBD Circuit
- Main Line Between RDR-R and RDR-L Circuit
- Malfunction Area Chart
- Main Line Between RDR-L and Lane Circuit
- Main Line Between Lane and APA Circuit
- DLC Branch Line Circuit (CAN Communication Circuit 1)
- Sonar Branch Line Circuit
- CAN Gateway
- A-Bag Branch Line Circuit
- ABS Branch Line Circuit
- ADP Branch Line Circuit
- AFS Branch Line Circuit
- APA Branch Line Circuit
- AV Branch Line Circuit
- BCM Branch Line Circuit
- CAN Communication Circuit 1
- CAN Communication Circuit 2
- CGW Branch Line Circuit (CAN Communication Circuit 1)
- E-SUS Branch Line Circuit
- ECM Branch Line Circuit
- HVAC Branch Line Circuit
- ICC Branch Line Circuit
- IPDM-ER Branch Line Circuit
- ITS Communication Circuit
- Lane Branch Line Circuit
- Laser Branch Line Circuit
- M&A Branch Line Circuit
- Main Line Between DLC and ADP Circuit
- Power Supply and Ground Circuit
- PSB Branch Line Circuit
- PWBD Branch Line Circuit
- RDR-L Branch Line Circuit
- RDR-R Branch Line Circuit
- STRG Branch Line Circuit
- TCM Branch Line Circuit
- TPMS Branch Line Circuit
- 4WD Branch Line Circuit
- CGW BRANCH Line Circuit (CAN Communication Circuit 2)
- DLC BRANCH Line Circuit (CAN Communication Circuit 2)
- AVM BRANCH Line Circuit
- Scan Tool Testing and Procedures
- Pinout Values and Diagnostic Parameters
- Programming and Relearning
Locations
Service and Repair
Diagrams
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.