Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: U2148-87 Can Comm Err (brake Control Unit)
Intelligent Key Unit
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, CAN Low-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 items (Trouble diagnosis content) | DTC Detection Condition | |
|---|---|---|---|
| U2148-87 |
CAN comm err (brake control unit) [CAN communication error (brake control unit)] |
Diagnosis condition | Ignition switch ON |
| Signal (terminal) | CAN communication signal | ||
| Threshold | Transmission error or reception error | ||
| Diagnosis delay time | 2 seconds or more | ||
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
DTC CONFIRMATION
CONSULT
-
Ignition switch ON and wait for 2 seconds or more.
-
Select “Self diagnosis result” mode of “INTELLIGENT KEY”.
Is DTC detected?
YES>>Refer to DTC Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: Inspection End.
DTC Diagnosis Procedure
CHECK CAN COMMUNICATION
Check CAN communication. Refer to Trouble Diagnosis Flow Chart.
Is DTC “U2148-87” displayed?
YES>>Repair or replace the malfunctioning part.
NO>>Check intermittent incident. Refer to Intermittent Incident.
Automatic Back Door Control Unit
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, CAN Low-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 items (Trouble diagnosis content) | DTC Detection Condition | |
|---|---|---|---|
| U2148-87 |
CAN comm err (brake control unit) [CAN communication error (brake control unit)] |
Diagnosis condition | Ignition switch ON |
| Signal (terminal) | CAN communication signal | ||
| Threshold | Automatic back door control unit is unable to receive the CAN communications signal from ABS actuator and electric unit (control unit) | ||
| Diagnosis delay time | 2 seconds or less | ||
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
Inhibit automatic back door system all function
DTC CONFIRMATION PROCEDURE
DTC CONFIRMATION
CONSULT
-
Ignition switch ON and wait for 2 seconds or more.
-
Select “Self diagnosis result” mode of “AUTOMATIC BACK DOOR”.
Is DTC detected?
YES>>Refer to DTC Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: Inspection End.
DTC Diagnosis Procedure
CHECK CAN COMMUNICATION
Check CAN communication. Refer to Trouble Diagnosis Flow Chart.
Is DTC “U2148-87” displayed?
YES>>Repair or replace the malfunctioning part.
NO>>Check intermittent incident. Refer to Intermittent Incident.
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Stop Lamp Circuit
Component Function Check
CHECK STOP LAMP OPERATION
Ignition switch ON.
With operating the brake pedal, check that the stop lamp and high-mounted stop lamp is turned ON.
Depressed
: Stop lamp and high-mounted stop lamp ON
Fully released
: Stop lamp and high-mounted stop lamp O ...
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P2097 A/f Sensor 1
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2097
00
POST CATALYST FUEL TRIM SYS B1
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Diagnosis condition
—
Signal (terminal)
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