Nissan Altima 2007-2012 Service Manual: B2603 shift position status

Description

BCM confirms the shift position with the following 2 signals.

• CVT selector lever

• P/N position switch

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-36, "DTC Logic".

• If DTC B2603 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 1 second.

- CVT selector lever is in the P position.

- Do not depress the brake pedal.

2. Shift to N and wait for at least 1 second.

3. Shift to any gear other than P or N and wait for at least 1 second.

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

Is DTC detected? YES >> Refer to SEC-81, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK DTC WITH IPDM E/R

Check “Self diagnostic result” with CONSULT-III. Refer to PCS-45, "DTC Index".

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

NO >> Repair or replace malfunctioning parts.

2.CHECK PNP SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM harness connector and BCM harness connector.

3. Check continuity between TCM harness connector F16 (A) terminal 20 and BCM harness connector M18 (B) terminal 48.

4. Check continuity between TCM harness connector F16 (A) terminal 20 and ground.

Is the inspection result normal? YES >> GO TO 3

NO >> Repair harness or connector.

3.CHECK CVT DEVICE POWER SUPPLY

1. Turn ignition switch OFF.

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 5

NO >> GO TO 4

4.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.

5.CHECK CVT DEVICE CIRCUIT

1. Disconnect BCM harness connector.

2. Check continuity between BCM harness connector M19 (A) terminal 87 and CVT device (park position switch) harness connector M23 (B) terminal 9.

3. Check continuity between BCM harness connector M19 (A) terminal 87 and ground.

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

NO >> Repair harness or connector.

6.CHECK CVT DEVICE

Refer to SEC-78, "Component Inspection".

Is the inspection result normal? YES >> GO TO 7

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

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

    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 ...

    B2604 PNP switch
    Description BCM confirms the shift position with the following 4 signals. • CVT selector lever • P/N position switch • P position signal from IPDM E/R (CAN) • P position signal from TC ...

    Other materials:

    How to follow trouble diagnoses
    Description NOTICE: Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing. • Before performing trouble diagnoses, read the “Work Flow” in each section. • After repairs, re-check that the problem ...

    U1000 can comm circuit
    Description Refer to LAN-7, "System Description". DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE Diagnosis Procedure 1. PERFORM SELF DIAGNOSTIC 1. Turn ignition switch ON and wait for 2 second or more. 2. Check “Self Diagnostic Result” of IPDM E/R. Is “CAN C ...

    Lan system circuit
    Description SYMPTOM: Mode door motor, intake door motor and/or air mix door motor does not operate normally. Diagnosis Procedure DIAGNOSIS PROCEDURE FOR LAN CIRCUIT 1.CHECK POWER SUPPLY FOR DOOR MOTORS 1. Press ignition switch ON. 2. Check voltage between front air control connector M37 ...