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LIGHTING SYSTEM, Diagnostic DTC:B2415

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DTC Code DTC Name
B2415 Vehicle Speed Sensor Malfunction
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DESCRIPTION

The headlight leveling ECU receives the vehicle speed signal from the combination meter.

Tip:

  • A voltage of 12 V or 5 V is output from each ECU connected to the combination meter and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU connected to the combination meter controls its respective system based on this pulse signal.

  • If a short occurs in any of the ECUs connected to the combination meter, or in the wire harness of an ECU connected to the combination meter, the systems in the diagram below will not operate normally.

DTC Code DTC Detection Condition Trouble Area
B2415

One of the following conditions is met:


  • Malfunction in the combination meter.

  • Open or short in the vehicle speed sensor circuit.

  • Malfunction in the headlight leveling ECU.

  • Combination meter assembly

  • Harness or connector

  • Headlight leveling ECU assembly
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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CHECK COMBINATION METER SYSTEM


    1. Inspect the circuits that send vehicle speed signals to this system in the meter system (Click here).

      Tip:

      During inspection for the meter section, if there is an instruction that indicates to proceed to the next suspected area, proceed to the next step.


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    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY)


    1. A01IO3BE06

      Disconnect the H62 combination meter connector.

    2. Disconnect the A49 headlight leveling ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H62-3 (+S) - A49-16 (SPDR) Always Below 1 Ω
      Table 1. Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *2

      Front view of wire harness connector

      (to Headlight Leveling ECU Assembly)
      Table 2. Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

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    REPLACE HEADLIGHT LEVELING ECU ASSEMBLYClick here

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    REPLACE HEADLIGHT LEVELING ECU ASSEMBLYClick here

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    REPAIR OR REPLACE HARNESS OR CONNECTOR