Diagnosis Procedure
WARNING: This page is about a different car, the 2011 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
- CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Disconnect BCM and combination switch.
- Check continuity between BCM harness connector and combination switch harness connector.CONTINUITY REFERENCE CHART
System BCM Combination switch Continuity Connector Terminal Connector Terminal INPUT 1 M18 (A) 6 M28 (B) 6 Yes INPUT 2 5 7 INPUT 3 4 10 INPUT 4 3 9 INPUT 5 2 8 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.
CONTINUITY REFERENCE CHARTSystem BCM Ground Continuity Connector Terminal INPUT 1 M18 6 No INPUT 2 5 INPUT 3 4 INPUT 4 3 INPUT 5 2 Does continuity exist?
YES: Repair or replace harness.
NO: GO TO 3
- CHECK BCM OUTPUT VOLTAGE
- Connect BCM.
- Turn ignition switch ON.
- Check voltage between BCM harness connector and ground.
Courtesy of NISSAN MOTOR CO., U.S.A.
VOLTAGE REFERENCE CHARTSystem Terminals Voltage (Approx.) (+) (-) BCM Ground Connector Terminal INPUT 1 M18 6 Refer to "REFERENCE VALUE ". INPUT 2 5 INPUT 3 4 INPUT 4 3 INPUT 5 2 Is the measurement value normal?
YES: GO TO 4
NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".
- CHECK COMBINATION SWITCH
Check combination switch. Refer to "DESCRIPTION ".
Is the check result normal?
YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".
NO: Replace the combination switch (applicable parts). Refer to "REMOVAL AND INSTALLATION ".