Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: U2140-87 Can Comm Err (ecm)
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 | |
|---|---|---|---|
| U2140-87 |
CAN comm err (ECM) [CAN communication error (ECM)] |
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 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
Check CAN communication. Refer to Trouble Diagnosis Flow Chart.
Is DTC “U2140-87” displayed?
YES>>Repair or replace the malfunctioning part.
NO>>Check intermittent incident. Refer to Intermittent Incident.
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Intelligent Around View Monitor. Preparation. Preparation
Preparation
Special Service Tools
The actual shape of the tools may differ from those illustrated here.
Tool number
(TechMate No.)
Tool name Description
-
(NI-53373)
ADAS calibration laser level
Target setup and ADAS calibration
-
(NI-53371)
ADAS calibration rod
...
P2237 Ho2s2
DTC Description
To judge malfunctions, the diagnosis checks that the A/F signal
computed by ECM from the A/F sensor 1 signal fluctuates according to
fuel feedback control.DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2237
00
...
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Service Data and Specifications (sds)
Periodical Maintenance Specification
ENGINE COOLANT CAPACITY (APPROXIMATE)Unit: (US qt, Imp qt) Engine coolant capacity (With reservoir tank at “MAX” level)
8.5 (9, 7-1/2)
Reservoir tank engine coolant capacity (At “MAX” level)
0. ...
