Nissan Sentra manuals

Nissan Sentra Service Manual: U0155 Lost communication (IPC)

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms [Trouble diagnosis content]

DTC detection condition

Possible causes

U0155 LOST COMM (IPC) [Lost Communication With Instrument Panel Cluster (IPC) Control Module] When the ignition switch is ON, TCM is unable to receive the CAN communications signal from the combination meter continuously for 2 seconds or more.
  • Combination meter
  • Harness or connector (CAN communication line is open or shorted)

DTC CONFIRMATION PROCEDURE

1.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.

2.PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT


  1. Start the engine and wait for at least 5 seconds.
  2. Check the DTC.

Is “U0155” detected? YES >> Go to TM-156, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to LAN-16, "Trouble Diagnosis Flow Chart".

U0300 CAN COMMUNICATION DATA

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms (Trouble diagnosis content)

DTC detection condition

Possible causes

U0300 CAN COMM DATA (Internal Control Module Software Incompatibility) When 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. Control unit other than TCM

DTC CONFIRMATION PROCEDURE

1.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.

2.CHECK DTC DETECTION

With CONSULT


  1. Start the engine and wait for 5 seconds or more.
  2. Check the DTC.

Is “U0300” detected? YES >> Go to TM-157, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CONTROL UNIT CHECK

Check the number of control units replaced before “U0300” is detected.

Is one control unit replaced? YES >> The specification of the control unit replaced may be incorrect. Check the part number and the specification.

NO >> GO TO 2.

2.CONTROL UNIT CHECK

With CONSULT


  1. Remove one of the control unit replaced
  2. Assemble the old control unit before replacement.
  3. Turn ignition switch ON, and wait for 2 seconds or more.
  4. Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “U0300”detected? YES >> Turn OFF the ignition switch and check other control units in the same manner.

NO >> The specification of the control unit removed may be incorrect. Check the part number and the specification.

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