Nissan Murano: Dtc/circuit Diagnosis / U1000 Can Comm Circuit
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-Nissan Murano vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability. Many electronic control units are equipped onto a Nissan Murano vehicle, and each control unit shares information and links with other control units during operation (not independently). 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. Each control unit transmits/receives data but selectively reads required data only.
DTC DETECTION LOGIC
When the ignition switch is ON, TCM cannot send the CAN communication signal continuously for 2 seconds or more.
| DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | |
| U1000 |
CAN COMM CIRCUIT (CAN Communication Line) |
Diagnosis condition | When the ignition switch is ON |
| Signal | CAN communication signal | ||
| Threshold | TCM cannot send the CAN communication signal | ||
| Diagnosis delay time | Continuously for 2 seconds or more | ||
POSSIBLE CAUSE
Harness or connector (CAN communication line is open or shorted)
FAIL-SAFE
Not changed from normal driving
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>>
GO TO 2.
CHECK DTC DETECTION
With CONSULT
-
Start the engine and wait for at least 5 seconds.
-
Check the DTC.
Is “U1000” detected?
YES>>Go to Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: INSPECTION END
For the diagnosis procedure, refer to Trouble Diagnosis Flow .
U0300 Can Communication Data
DTC Description
DTC DETECTION LOGICWhen the ignition switch is ON, the data length transmitted from each control unit is shorter than the specified length and the status continues for 2 seconds or more...
P0605 Control Module Rom
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0605
CONTROL MODULE ROM
[Internal Control Module Read Only Memory (ROM) Error]
Diagnosis condition
When turning ON the ignition switch
Signal
—
Threshold
TCM ROM area sum parity check detects malfunction in ROM...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: P2100 Throttle Control Motor Relay
DTC Description DTC DETECTION LOGIC ECM detects that the voltage of power source for throttle control motor is excessively low. ECM detects that the throttle control motor relay is stuck ON. DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P2100 ETC MOT PWR-B1 (Throttle actuator “A” control motor circuit/open) Diagnosis condition Start engine and let it idle Signal (terminal) Throttle control motor circuit Threshold ECM detects that the voltage of power source for throttle control motor is excessively low Diagnosis delay time — P2103 ETC MOT PWR-B1 (Throttle actuator “A” control motor circuit high) Diagnosis condition Ignition switch ON Signal (terminal) Throttle control motor circuit Threshold ECM detects that the throttle control motor relay is stuck ON Diagnosis delay time — POSSIBLE CAUSEDTC P2100 Harness or connectors (Throttle control motor relay circuit is open) Throttle control motor relay DTC P2103 Harness or connectors (Throttle control motor relay circuit is shorted) Throttle control motor relay FAIL-SAFE Engine operating condition in fail-safe mode Fail safe mode Nissan Murano Vehicle behavior Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx...
Nissan Murano (Z52) 2015-2024 Owners Manual: Precautions when starting and driving
WARNING Do not leave children or adults who would normally require the assistance of others alone in your vehicle. Pets should also not be left alone. They could accidentally injure themselves or others through inadvertent operation of the vehicle...
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Autolight system
The autolight system allows the headlights to turn on and off automatically. The autolight system can:
Turn on the headlights, front parking, tail, license plate and instrument panel lights automatically when it is dark. Turn off all the lights (except daylight running lights) when it is light. Keep all the lights on for a period of time after you place the ignition switch in the OFF position and all doors are closed.