Nissan Altima 2007-2012 Service Manual: B2098 ignition relay on stuck

Description

• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN communication.

• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/ h (2.5 MPH) or less.

• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5 MPH) or when an abnormal condition occurs in CAN communication from the unified meter (Emergency OFF) - Press and hold the push-button ignition switch for 2 seconds or more.

- Press the push-button ignition switch 3 time within 1.5 seconds.

NOTE: The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch is pressed.

DTC Logic

DTC DETECTION LOGIC

Diagnosis Procedure

1. PERFORM SELF DIAGNOSIS

1. Turn the ignition switch ON.

2. Erase “Self Diagnostic Result” of IPDM E/R.

3. Turn ignition switch OFF, and wait for 1 second or more.

4. Turn the ignition switch ON. Check “Self Diagnostic Result” again.

Is “IGN RELAY ON” displayed? YES >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation".

NO >> Refer to GI-42, "Intermittent Incident".

    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 ...

    B2099 ignition relay off stuck
    Description • IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN communication. • Turn the ignition relay OFF by pressing the push-button ig ...

    Other materials:

    BCM (Body control module)
    Reference Value VALUES ON THE DIAGNOSIS TOOL Terminal Layout Physical Values 1: Sedan only 2: With LH front window anti-pinch 3: With LH and RH front window anti-pinch 4: With Intelligent Key 5: Without Intelligent Key Wiring Diagram-Coupe ...

    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 DETE ...

    B2612 steering status
    Description There are 2 switches in the steering unit. IPDM E/R compares those 2 switches conditions to judge the present steering status and transmit the result to BCM via CAN communication. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B2612 is displayed with DTC U1000, first perform th ...