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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1610 (Transfer Case) >> Trouble Diagnosis For System >> Transfer Control Unit >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECTION START 

    Do you have CONSULT-II?

    YES or NO 

    1. YES: GO TO 2.
    2. NO: GO TO 3.
  2. PERFORM SELF-DIAGNOSIS (WITH CONSULT-II) 

    With CONSULT-II 

    1. Turn ignition switch "ON". (Do not start engine.)
    2. Select "SELF-DIAG RESULTS" mode for "ALL MODE AWD/4WD" with CONSULT-II.
    3. Touch "ERASE".
    4. Turn ignition switch "OFF" and wait at least 10 seconds.
    5. Perform the self-diagnosis again.

    Is the "CONTROL UNIT 1 [P1802]", "CONTROL UNIT 2 [P1803]", "CONTROL UNIT 3 [P1804]" or "CONTROL UNIT 4 [P1809]" displayed? 

    1. YES: Replace transfer control unit. Refer to "TRANSFER CONTROL UNIT ".
    2. NO: Inspection End.
  3. PERFORM SELF-DIAGNOSIS (WITHOUT CONSULT-II) 

    Without CONSULT-II 

    1. Perform the self-diagnosis and then erase self-diagnostic results. Refer to "SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II) " and "ERASE SELF-DIAGNOSIS ".
    2. Perform the self-diagnosis again.

    Do the self-diagnostic results indicate AD converter? 

    1. YES: Replace transfer control unit. Refer to "TRANSFER CONTROL UNIT ".
    2. NO: Inspection End.