LIGHTING SYSTEM Driver Side Instrument Panel Illumination does not Turn On

WIRING DIAGRAM

Refer to the wiring diagram for "Instrument Panel Illumination does not Turn On" Click here.

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (NO. 2 INSTRUMENT PANEL GARNISH [DRIVER SIDE INSTRUMENT PANEL ILLUMINATION])


    1. Check the connection of connector of the No. 2 instrument panel garnish (driver side instrument panel illumination).

      OK
      The connector is connected securely and there are no contact problems.

    NG

    CONNECT SECURELY

    OK

  2. CHECK CONNECTOR CONNECTION CONDITION (NO. 1 INSTRUMENT PANEL GARNISH [PASSENGER SIDE INSTRUMENT PANEL ILLUMINATION])


    1. Check the connection of connector of the No. 1 instrument panel garnish (passenger side instrument panel illumination).

      OK
      The connector is connected securely and there are no contact problems.

    NG

    CONNECT SECURELY

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 1 INSTRUMENT PANEL GARNISH [PASSENGER SIDE INSTRUMENT PANEL ILLUMINATION] - NO. 2 INSTRUMENT PANEL GARNISH [DRIVER SIDE INSTRUMENT PANEL ILLUMINATION]

    A01GZV1E04

    1. Disconnect the L171 No. 1 instrument panel garnish (passenger side instrument panel illumination) connector.

    2. Disconnect the L172 No. 2 instrument panel garnish (driver side instrument panel illumination) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L172-1 (+B) - L171-4 (LED+) Always Below 1 Ω
      L172-1 (+B) - Body ground Always 10 kΩ or higher
      L172-5 (LED1) - L171-5 (DOUT) Always Below 1 Ω
      L172-5 (LED1) - Body ground Always 10 kΩ or higher
      L172-4 (LED2) - L171-13 (DO2) Always Below 1 Ω
      L172-4 (LED2) - Body ground Always 10 kΩ or higher
      L172-3 (LED3) - L171-12 (DO3) Always Below 1 Ω
      L172-3 (LED3) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK NO. 2 INSTRUMENT PANEL GARNISH SUB-ASSEMBLY (DRIVER SIDE INSTRUMENT PANEL ILLUMINATION)


    1. A01GWBEE06

      Disconnect the L172 No. 2 instrument panel garnish (driver side instrument panel illumination) connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      L172-1 (+B) - Body ground Instrument panel illumination is off (when not in sleep mode [20 minutes within opening any door]) 7.5 to 8.5 V

    NG

    REPLACE NO. 1 INSTRUMENT PANEL GARNISH SUB-ASSEMBLY (PASSENGER SIDE INSTRUMENT PANEL ILLUMINATION) Click here

    OK

  5. CHECK WAVEFORM


    1. A01GWKCE21

      Connect an oscilloscope to the No. 1 instrument panel garnish (passenger side instrument panel illumination) connector.

    2. Using an oscilloscope, check the signal waveform of the ECU.

      A01GWYNE01
      Item Content
      Terminal No. (Symbol)

      • L171-5 (DOUT) - Body ground

      • L171-13 (DO2) - Body ground

      • L171-12 (DO3) - Body ground
      Tool Setting 1 V/DIV., 2 ms/DIV.
      Condition Power switch on (IG), instrument panel illumination being dimmed after shift position moved from P
      OK
      The waveform is output as shown in the illustration.

    NG

    REPLACE NO. 1 INSTRUMENT PANEL GARNISH SUB-ASSEMBLY (PASSENGER SIDE INSTRUMENT PANEL ILLUMINATION) Click here

    OK

    REPLACE NO. 2 INSTRUMENT PANEL GARNISH SUB-ASSEMBLY (DRIVER SIDE INSTRUMENT PANEL ILLUMINATION) Click here