LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 108 (Tires, Wheels & Tire Pressure Monitoring System (TPMS) (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC C1734: BCM >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

The Signal Tech II Tool [- (J-50190)] can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.

  • Activate and display TPMS sensor IDs
  • Display tire pressure reported by the TPMS sensor
  • Read TPMS DTCs
  • Register TPMS sensor IDs

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK BCM HARNESS CONNECTORS

    Check BCM harness connectors for damage or loose connections.

    Is the inspection result normal?

    YES 

    Repair or replace connectors.

    NO 

    GO TO 2.

  2. CHECK BCM POWER SUPPLY AND GROUND

    Check BCM power supply and ground. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair or replace harness or connectors.

  3. CHECK REMOTE KEYLESS ENTRY RECEIVER POWER CIRCUIT

    Check voltage between remote keyless entry receiver connector M86 terminal 1 and ground.

    Remote keyless entry receiver Ground Voltage
    (Approx.)
    Connector Terminal
    M86 1 - Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 4. 

    NO 

    Repair or replace harness or connectors.

  4. CHECK REMOTE KEYLESS ENTRY RECEIVER SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect BCM connector M80 and remote keyless entry receiver connector.
    3. Check continuity between BCM connector M80 terminal 119 and remote keyless entry receiver connector M86 terminal 2.
      BCM Remote keyless entry receiver Continuity
      Connector Terminal Connector Terminal
      M80 119 M86 2 Yes
    4. Check continuity between BCM connector M80 terminal 119 and ground.
      BCM Ground Continuity
      Connector Terminal
      M80 119 - No

    Is the inspection result normal?

    YES 

    GO TO STEP 5. 

    NO 

    Repair or replace harness or connectors.

  5. CHECK REMOTE KEYLESS ENTRY RECEIVER GROUND CIRCUIT

    Check continuity between remote keyless entry receiver connector M86 terminal 3 and ground.

    Remote keyless entry receiver Ground Continuity
    Connector Terminal
    M86 3 - Yes

    Is the inspection result normal?

    YES 

    GO TO STEP 6. 

    NO 

    Repair or replace harness or connectors.

  6. CHECK BCM INPUT/OUTPUT SIGNALS

    Check BCM input/output signals. Refer to REFERENCE VALUE .

    Is the inspection result normal?

    YES 

    Inspection End.

    NO 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

scientia non olet · About LEMON Manuals