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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (3 Of 3)) >> DTC/Circuit Diagnosis >> DTC P2100, P2103: Throttle Control Motor Relay >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

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.

  1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Disconnect IPDM E/R harness connector.
    4. Check the continuity between IPDM E/R harness connector and ECM harness connector.
      IPDM E/R ECM Continuity
      Connector Terminal Connector Terminal
      F19 57 F78 2 Existed
    5. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair open circuit, short to ground or short to power in harness or connectors.

  2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT

    1. Check the continuity between IPDM E/R harness connector and ECM harness connector.
      IPDM E/R ECM Continuity
      Connector Terminal Connector Terminal
      F24 65 F78 8 Existed
    2. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    Perform the trouble diagnosis for power supply circuit.

    NO 

    Repair open circuit, short to ground or short to power in harness or connectors.

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