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.

CAUTION / NOTICE / HINT

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]

   

   *1	Front view of wire harness connector: (to No. 2 Instrument Panel Garnish [Driver Side Instrument Panel Illumination])
   *2	Front view of wire harness connector: (to No. 1 Instrument Panel Garnish [Passenger Side Instrument Panel Illumination])

   
   

   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. 

      *1	Front view of wire harness connector: (to No. 2 Instrument Panel Garnish [Driver Side Instrument Panel Illumination])

      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. 

      *1	Component with harness connected: (to No. 1 Instrument Panel Garnish [Passenger Side Instrument Panel Illumination])

      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.

      

      *1	Waveform example

      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.

   
   

   OK

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

   NG

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