Nissan Maxima Service and Repair Manual: B2604 transmission range switch

Description

BCM confirms the shift position with the following 4 signals.

  •  CVT selector lever

  •  Transmission range switch

  •  P position signal from IPDM E/R (CAN)

  •  P position signal from TCM (CAN)

DTC Logic

DTC DETECTION LOGIC

NOTE:

  • If DTC B2604 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-29, "DTC Logic".

  • If DTC B2604 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-30, "DTC Logic".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

  1.  Start the engine under the following conditions and wait for at least 1 second.

    •  CVT selector lever is in the P position

    •  Do not depress the brake pedal

  2.  Use CVT selector lever to select each gear one at a time. Wait at each gear for at least 1 second.

  3.  Check "Self diagnostic result" with CONSULT.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to SEC-147, "Wiring Diagram" or SEC-128, "Wiring Diagram".

1.CHECK DTC WITH TCM

Check "Self diagnostic result" with CONSULT. Refer to PCS-27, "DTC Index".

2.CHECK TRANSMISSION RANGE SWITCH CIRCUIT

  1.  Turn ignition switch OFF.

  2.  Disconnect TCM harness connector and BCM harness connector.

  3.  Check continuity between TCM harness connector F15 (A) terminal 20 and BCM harness connector M18 (B) terminal 48.

4. Check continuity between TCM harness connector F15 (A) terminal 20 and ground.

3.CHECK INTERMITTENT INCIDENT

Refer to GI-41, "Intermittent Incident".

 Inspection End.

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