Diagnostic Procedure

CHECK BCM CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors M18 and M20.
3. Check terminals for damage or loose connections.
Inspection results OK?

YES: GO TO 2.

NO: Repair or replace damaged parts.
CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT
Check continuity between BCM harness connector M18 terminal 15 and ground.

Continuity should not exist.

Fig 1: Checking Continuity Between BCM Harness Connector M18 Terminal 15 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Does continuity exist?

YES: Repair circuit for short to ground.

NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".