Nissan Sentra manuals

Nissan Sentra Service Manual: U1002 System comm (CAN)

DTC Logic

DTC DETECTION LOGIC

DTC

Display item

Malfunction detected condition

Possible cause

U1002 SYSTEM COMM(CAN) When ABS actuator and electric unit (control unit) is not transmitting or receiving CAN communication signal for 2 seconds or less.
  • CAN communication line
  • ABS actuator and electric unit (control unit)

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.DTC REPRODUCTION PROCEDURE

With CONSULT


  1. Turn the ignition switch ON.

  2. Perform self diagnosis for “ABS”.

Is DTC “U1002” detected? YES >> Proceed to BRC-88, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

CAUTION:

1.CHECK CAN DIAGNOSIS SUPPORT MONITOR

  1. Select “ABS” and “CAN Diagnosis Support Monitor” in order with CONSULT.

  2. Check malfunction history between each control unit connected to ABS actuator and electric unit (control unit).

Check the result of “PAST”? All items are “OK”>>Refer to GI-39, "Intermittent Incident".

“TRANSMIT DIAG” is other than “OK”>>GO TO 2.

A control unit other than ABS actuator and electric unit (control unit) is anything other than “OK”>>GO TO 3.

2.CHECK TRANSMITTING SIDE UNIT

Check the ABS actuator and electric unit (control unit) harness connector terminals 14 and 26 for damage or loose connection.

Is the inspection result normal? YES >> Erase self-diagnosis results. Then perform self-diagnosis for “ABS” with CONSULT.

NO >> Recheck terminals for damage or loose connection.

3.CHECK APPLICABLE CONTROL UNIT

Check damage or loose connection of each CAN communication line harness connector terminals.

Is the inspection result normal? YES >> Erase self-diagnosis results. Then perform self-diagnosis for applicable control unit with CONSULT.

NO >> Recheck terminals for damage or loose connection.

U1000 CAN Comm circuit
DTC Logic DTC DETECTION LOGIC DTC Display Item Malfunction detected condition Possible causes U1000 CAN COMM CIRCUIT When CAN communication signal is not continuously ...

U1010 Control unit (CAN)
Description Initial diagnosis of ABS actuator and electric unit (control unit) DTC Logic DTC DETECTION LOGIC DTC Items (CONSULT screen terms) DTC detection condition Possible ...

Other materials:

Power outlet
Center Console Console Box (if so equipped) The power outlets are for powering electrical accessories such as cellular telephones. They are rated at 12 volt, 120W (10A) maximum. The power outlets are powered only when the ignition switch is in the ACC or ON position. CAUTION The ...

Dtc/circuit diagnosis
Sport mode switch Component function check 1. Check sport mode switch operation Turn ignition switch on. Check sport mode indicator lamp turns on/off on combination meter when turn sport mode switch on/off. Is the inspection result normal? Yes >> inspection end. No >> ...

Ecm branch line circuit
Diagnosis procedure 1.Check connector Turn the ignition switch off. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ecm for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? Yes > ...

© 2014-2025 Copyright www.nisentra.com