Diagnosis Procedure
WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect the BCM and combination switch.
- Check continuity between BCM harness connector and combination switch harness connector.TERMINAL CONTINUITY REFERENCE CHART
System BCM Combination switch Continuity Connector Terminal Connector Terminal INPUT 1 M19 (A) 95 M28 (B) 11 Yes INPUT 2 97 9 INPUT 3 76 7 INPUT 4 96 10 INPUT 5 75 13 Courtesy of NISSAN MOTOR CO., U.S.A.
Does continuity exist?
YES: GO TO 2
NO: Repair or replace harness.
- CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
TERMINAL CONTINUITY REFERENCE CHARTSystem BCM Ground Continuity Connector Terminal INPUT 1 M19 95 No INPUT 2 97 INPUT 3 76 INPUT 4 96 INPUT 5 75 Courtesy of NISSAN MOTOR CO., U.S.A.
Does continuity exist?
YES: Repair or replace harness.
NO: GO TO 3
- CHECK BCM OUTPUT VOLTAGE
- Connect the BCM.
- Check voltage between BCM harness connector and ground.TERMINAL VOLTAGE REFERENCE CHART
System Terminals Voltage (Approx.) (+) (-) BCM Ground Connector Terminal INPUT 1 M19 95 Refer to "PHYSICAL VALUES ". INPUT 2 97 INPUT 3 76 INPUT 4 96 INPUT 5 75 Courtesy of NISSAN MOTOR CO., U.S.A.
Is the measurement normal?
YES: GO TO 4
NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".
- CHECK BCM INPUT SIGNAL
- Connect the combination switch.
- Turn ON any switch in the system that is malfunctioning.
- Check voltage between BCM harness connector and ground.TERMINAL VOLTAGE REFERENCE CHART
System Terminals Voltage (Approx.) (+) (-) BCM Ground Connector Terminal INPUT 1 M19 95 Refer to "PHYSICAL VALUES ". INPUT 2 97 INPUT 3 76 INPUT 4 96 INPUT 5 75 Is the measurement normal when any of the switches is turned ON?
YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".
NO: Replace the combination switch. Refer to "REMOVAL AND INSTALLATION ".