Nissan Rogue (T33) 2021-Present Service Manual: U1327 Mac Key

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / U1327 Mac Key

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U1327 52

MAC Key update

(MAC Key update) 		Diagnosis condition —
Signal (terminal) —
Threshold MAC key writing is incomplete.
Diagnosis delay time —
54 Diagnosis condition —
Signal (terminal) —
Threshold MAC key is not written after ECM replacement.
Diagnosis delay time —

POSSIBLE CAUSE

U1327–52

  • Network communication error between CONSULT and ECM

  • ECM used in other vehicles is installed in the Nissan Ariya vehicle

  • ECM

U1327–54

  • Writing of MAC key has not been executed

  • ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

U1327–52

CHECK DTC PRIORITY

If DTC U1327-52 is displayed with DTC U1327-54, first perform the trouble diagnosis for DTC U1327-54

Is DTC U1327-54 detected?

YES>>

Proceed to DTC U1327-54 DTC Description.

NO>>

GO TO 2

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Ignition switch ON.

  2. Perform “MAC key writing”. Refer to Description.

  3. Perform “MAC Diagnosis” of “ENGINE” using CONSULT.

Is DTC U1327-52 detected as the current malfunction?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

U1327–54

CHECK DTC PRIORITY

With CONSULT

  1. Ignition switch ON.

  2. Perform “MAC Diagnosis” of “ENGINE” using CONSULT.

Is DTC U1327-54 detected as the current malfunction?

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

U1327–52

CHECK DTC PRIORITY

If DTC U1327-52 is displayed with DTC U1327-54, first perform the trouble diagnosis for DTC U1327-54.

Is DTC U1327 detected?

YES>>

Proceed to DTC Description.

NO>>

GO TO 2

PERFORM MAC KEY WRITING

With CONSULT

  1. Perform “MAC key writing”. Refer to Description.

  2. Perform “MAC Diagnosis” of “ENGINE” using CONSULT.

Is DTC U1327-52 detected?

YES>>

GO TO 3

NO>>

INSPECTION END

REPLACE ECM

Replace ECM. Refer to ECM : Removal & Installation.

>>

INSPECTION END

U1327–54

PERFORM MAC KEY WRITING

With CONSULT

  1. Perform “MAC key writing”. Refer to Description.

  2. Perform “MAC Diagnosis” of “ENGINE” using CONSULT.

Is DTC U1327-54 detected as the current malfunction?

YES>>

GO TO 2.

NO>>

INSPECTION END

PERFORM MAC KEY WRITING (SECOND TIMES)

With CONSULT

  1. Restart CONSULT.

  2. Perform “MAC key writing”. Refer to Description.

  3. Perform “MAC Diagnosis” of “ENGINE” using CONSULT.

Is DTC U1327-54 detected as the current malfunction?

YES>>

GO TO 3.

NO>>

INSPECTION END

PERFORM MAC KEY WRITING (THIRD TIMES)

With CONSULT

  1. Restart CONSULT.

  2. Perform “MAC key writing”. Refer to Description.

  3. Perform “MAC Diagnosis” of “ENGINE” using CONSULT.

Is DTC U1327-54 detected as the current malfunction?

YES>>

Replace ECM. Refer to ECM : Removal & Installation.

NO>>

INSPECTION END

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