Nissan Altima 2007-2012 Service Manual: B2602 shift position

Description

BCM confirms the shift position with the following 2 signals.

• CVT selector lever

• Speed signal from meter

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B2602 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-36, "DTC Logic".

• If DTC B2602 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-37, "DTC Logic".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine under the following conditions and wait for at least 10 seconds.

- CVT selector lever is in the P or N position

- Depress the brake pedal.

2. Drive the vehicle for at least 10 seconds at a speed greater than 4 km/h (2 MPH).

3. Check “Self diagnostic result” with CONSULT-III.

Is DTC detected? YES >> Refer to SEC-79, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK DTC WITH “COMBINATION METER”

Check “Self diagnostic result” with CONSULT-III. Refer to MWI-95, "DTC Index".

Is the inspection result normal? YES >> GO TO 2

NO >> Repair or replace malfunctioning parts.

2.CHECK CVT DEVICE POWER SUPPLY

1. Turn ignition switch to ACC.

2. Disconnect CVT device (park position switch) harness connector.

3. Check voltage between CVT device (park position switch) harness connector and ground.

Is the inspection result normal? YES >> GO TO 4

NO >> GO TO 3

3.CHECK CVT DEVICE POWER SUPPLY CIRCUIT

1. Disconnect BCM harness connector.

2. Check continuity between BCM harness connector M19 (A) terminal 84 and CVT device (park position switch) harness connector M23 (B) terminal 8.

3. Check continuity between BCM harness connector M19 (A) terminal 84 and ground.

Is the inspection result normal? YES >> Replace BCM. Refer to BCS-96, "Removal and Installation".

NO >> Repair harness or connector.

4.CHECK CVT DEVICE CIRCUIT

1. Disconnect BCM harness connector.

2. Check continuity between CVT device (park position switch) harness connector and BCM harness connector.

3. Check continuity between CVT device (park position switch) harness connector and ground.

Is the inspection result normal? YES >> GO TO 5

NO >> Repair harness or connector.

5.CHECK CVT DEVICE

Refer to SEC-78, "Component Inspection".

Is the inspection result normal? YES >> GO TO 6

NO >> Replace CVT device. Refer to TM-255, "Removal and Installation" (RE0F09B) or TM-431, "Removal and Installation" (RE0F10A).

6.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

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