Nissan Maxima Service and Repair Manual: B2190 nats antenna AMP.

Nissan Maxima Service and Repair Manual / Body exterior, doors, roof & vehicle security / Security control system / DTC/circuit diagnosis / B2190 nats antenna AMP.

Description

Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed.

Prohibits the start of engine when an unregistered ID of Intelligent Key is used.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

  1.  Insert Intelligent Key into the key slot.

  2.  Check "Self Diagnostic Result" with CONSULT.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1.  Press the push-button ignition switch.

  2.  Check "Self Diagnostic Result" with CONSULT.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to SEC-147, "Wiring Diagram".

1. INSPECTION START

Check the case in which DTC is detected.

  •  Case1: It is detected when Intelligent Key is inserted into key slot.

  •  Case2: It is detected after Intelligent Key is inserted into key slot and push-button ignition switch is pressed.

In which case is DTC detected?

Case1.  GO TO 2

Case2.  GO TO 4

2.CHECK KEY SLOT INPUT SIGNAL

  1.  Turn ignition switch OFF.

  2.  Disconnect key slot harness connector.

  3.  Check voltage between key slot harness connector M40 terminal 2 and ground.

3.CHECK KEY SLOT CIRCUIT

  1.  Disconnect BCM harness connector.

  2.  Check continuity between key slot harness connector M40 (A) terminal 2 and BCM harness connector M19 (B) terminal 68.

3. Check continuity between key slot harness connector M40 (A) terminal 2 and ground.

4.CHECK PUSH-IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns ON.

5.CHECK KEY SLOT COMMUNICATION SIGNAL

  1.  Turn ignition switch OFF.

  2.  Disconnect key slot harness connector.

  3.  Check voltage between key slot harness connector M40 terminal 3 and ground.

6.CHECK KEY SLOT COMMUNICATION SIGNAL CIRCUIT

  1.  Disconnect BCM harness connector.

  2.  Check continuity between key slot harness connector M40 (A) terminal 3 and BCM harness connector M19 (B) terminal 69.

3. Check continuity between key slot harness connector M40 (A) terminal 3 and ground.

7.CHECK KEY SLOT GROUND CIRCUIT

  1.  Turn ignition switch OFF.

  2.  Disconnect key slot harness connector.

  3.  Check continuity between key slot harness connector M40 terminal 7 and ground.

8.CHECK INTERMITTENT INCIDENT

Refer to GI-41, "Intermittent Incident".

 Inspection End.

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