Nissan Altima 2007-2012 Service Manual: 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 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”.

3. Turn ignition switch OFF.

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

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

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

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