Nissan Rogue (T33) 2021-Present Service Manual: U007a-00 Control Module Comm Bus H Off
DTC Description
DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Ariya vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Ariya vehicle is equipped with many electronic control unit, 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-High line, CANLow line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. CAN Communication Signal Chart. Refer to CAN Communication Signal Chart.
DTC DETECTION LOGIC
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | |
|---|---|---|---|
| U007A-00 |
Control module comm Bus H Off (Control module communication Bus H Off) |
Diagnosis condition | Engine running at idle |
| Signal (terminal) | CAN communication signal | ||
| Threshold | Sub starter & generator cannot communicate CAN communication signal | ||
| Diagnosis delay time | 2 second or less | ||
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
Inhibit the idle start/stop system
DTC CONFIRMATION PROCEDURE
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
-
Start the engine and let it idle and wait for 2 seconds or more.
-
Select “Self diagnosis result” mode of “Sub starter & generator”.
Is DTC detected?
YES>>Refer to Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: Inspection End.
Diagnosis Procedure
CHECK CAN COMMUNICATION SYSTEM
Check CAN communication. Refer to Trouble Diagnosis Flow Chart.
>>
Inspection End.
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