Nissan Murano: Icc/adas (adas Control Unit) / U1000-01 Can Comm Circuit

DTC Description

CAN COMMUNICATION

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Murano vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Murano vehicle is equipped with many electronic control units, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads the required data only.

CAN communication signal chart. Refer to CAN Communication Signal Chart.

DTC DETECTION LOGIC

If “U1000–01” is detected, first diagnose the CAN communication system.

POSSIBLE CAUSE

• CAN communication system

• ITS communication

FAIL-SAFE

The following systems are canceled:

• Vehicle-to-vehicle distance control mode

• Conventional (fixed speed) cruise control mode

• Automatic Emergency Braking (AEB) with pedestrian detection

• Automatic Emergency Braking (AEB)

• Intelligent Forward Collision Warning (I-FCW)

• Lane Departure Warning (LDW)

• Intelligent Lane Intervention (I-LI)

• Blind Spot Warning (BSW)

• Rear Cross Traffic Alert (RCTA)

• Rear Automatic Braking (RAB)

• Traffic Sign Recognition (TSR)

• Intelligent Drive Alert (I-DA)

NOTE:

With the detection of “U1000–01” some systems do not perform the fail-safe operation. A system controlling based on a signal received from the control unit performs fail-safe operation when the communication with the ADAS control unit becomes inoperable.

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Start the engine.

2. Turn the MAIN switch of ICC system ON.

3. Perform “All DTC Reading”.

4. Check if the “U1000–01” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.

Is “U1000–01” detected as the current malfunction?

Refer to DTC Description.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: Inspection End

PERFORM THE SELF-DIAGNOSIS

CONSULT

1. Turn the ignition switch ON.

2. Turn the MAIN switch of ICC system ON, and then wait for 30 seconds or more.

3. Perform “All DTC Reading”.

4. Check if the “U1000–01” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.

Is “U1000–01” detected as the current malfunction?

Refer to CAN Communication Signal Chart

Inspection End