2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 809
1.CHECK CAN COMMUNICATION
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check "Self Diagnostic Result" of "METER/M&A"
YES - See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic
Overview/CAN Fundamental/Trouble Diagnosis Flow Chart.
NO - See: Testing and Inspection/Scan Tool Testing and Procedures/CONSULT-III/GST Data Link Connector (DLC) Circuit.
LT
ACTIVE AFS
DTC U1000 CAN COMM CIRCUIT
PG
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
U1000 CAN COMM CIRCUIT
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check "Self Diagnostic Result" of IPDM E/R.
Is "U1000: CAN COMM CIRCUIT" displayed?
YES - See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic
Overview/CAN Fundamental/Trouble Diagnosis Flow Chart.
NO - See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Perform Efficient Diagnosis For an Electrical Incident.
TF
TROUBLE DIAGNOSIS FOR SYSTEM
DTC U1000 CAN COMMUNICATION LINE
DIAGNOSTIC PROCEDURE
- Check the following if "CAN COMM CIRCUIT [U1000]" is detected in self-diagnosis results of CONSULT-III.
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-III
1. Turn ignition switch "ON" and start engine.
2. Select "SELF-DIAG RESULTS" mode for "ALL MODE AWD/4WD" with in CONSULT-III.
3. Perform the self-diagnosis.
Is the "CAN COMM CIRCUIT [U1000]" displayed?
YES - Print out CONSULT-III screen and go to See: Powertrain Management/Computers and Control Systems/Information Bus/Application and
ID/CAN System Specification Chart.
NO - INSPECTION END
U1001
U1001 CAN COMM CIRCUIT
Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with
high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, 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 line, CAN L line) allowing a high rate of information transmission with less wiring.
