Nissan Altima 2007-2012 Service Manual: B2608 starter relay

Description

Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B2608 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-235, "DTC Logic".

• If DTC B2608 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-236, "DTC Logic".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Press the push-button ignition switch under the following conditions.

- CVT selector lever is in the P or N position.

- Depress the brake pedal.

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

Is DTC detected? YES >> Refer to SEC-290, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK STARTER RELAY

1. Turn ignition switch ON.

2. Check voltage between BCM harness connector and ground under the following condition.

Is the measurement value within the specification? YES >> GO TO 3

NO >> GO TO 2

2.CHECK STARTER RELAY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM harness connector M21 and IPDM E/R harness connector E17.

3. Check continuity between IPDM E/R harness connector and BCM harness connector.

4. Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation".

NO >> Repair harness or connector.

3.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

    B2607 steering lock relay
    Description BCM requests to IPDM E/R to supply power to electronic steering column lock. IPDM E/R sends status of electronic steering column lock back to BCM. DTC Logic DTC DETECTION LOGIC NOT ...

    B2609 steering status
    Description There are 2 switches in the electronic steering column lock (steering lock/unlock switch 1 and 2). BCM compares those two switches conditions to judge the present steering status. DT ...

    Other materials:

    B2557 vehicle speed
    Description BCM receives the 2 vehicle speed signals via CAN communication. One signal is transmitted by the “unified meter”. Another signal is transmitted by “ABS actuator and electric unit (control unit)”. BCM compares both signals to detect the vehicle speed. DTC Logic DTC DETEC ...

    Replacement operations
    Description This section is prepared for technicians who have attained a high level of skill and experience in repairing collision- damaged vehicles and also use modern service tools and equipment. Persons unfamiliar with body repair techniques should not attempt to repair collision-damaged ...

    U1212 DVD-ROM data forward
    Description Refer to AV-240, "System Description". DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.CHECK DVD-ROM Check DVD-ROM for dirt, scratches and warpage. Is the DVD-ROM clean and undamaged? YES >> Replace AV control unit. Refer to AV-437, "Removal and ...