Nissan Altima 2007-2012 Service Manual: B2109 steering lock relay

Description

The steering lock relay ON signal is transmitted to IPDM E/R by BCM via CAN communication.

IPDM E/R turns the steering lock relay ON and transmits the release of the steering to BCM.

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B2109 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-433, "DTC Logic".

• If DTC B2109 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-434, "DTC Logic".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Press the push-button ignition switch under the following conditions and wait for at least 1 second.

- CVT selector lever is in the P or N position

- Do not depress the brake pedal

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

Is DTC detected? YES >> Refer to SEC-440, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK POWER SUPPLY CIRCUIT

Check IPDM E/R power supply circuit. Refer to PCS-23, "Diagnosis Procedure".

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

NO >> Repair the malfunctioning parts

2.CHECK FUSE

1. Turn ignition switch OFF.

2. Check 10A fuse (No. 40, located in IPDM E/R).

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

NO >> Check the following.

• Harness for open or short between IPDM E/R and battery

• Fuse

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