Nissan Rogue (T33) 2021-Present Service Manual: 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
-
Ignition switch ON.
-
Perform “MAC key writing”. Refer to Description.
-
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
-
Ignition switch ON.
-
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
-
Perform “MAC key writing”. Refer to Description.
-
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
-
Perform “MAC key writing”. Refer to Description.
-
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
-
Restart CONSULT.
-
Perform “MAC key writing”. Refer to Description.
-
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
-
Restart CONSULT.
-
Perform “MAC key writing”. Refer to Description.
-
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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