Ambient Light Circuit [08/2013 - ]: Procedure

1. Check symptoms.
   RESULT
   
   

   Result	Proceed to
   Ambient lights do not illuminate. (for front and rear doors)	A
   Ambient light does not illuminate. (for instrument panel)	B

B → See step   5 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. Check that the ambient lights come on.
   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Interior Illumination Light2	Ambient light (for front and rear doors)	ON/OFF	Power switch is turned off just before performing the Active Test.

   OK

   Ambient lights come on.

NG → See step   3 

OK → See step   10 

1. Disconnect the M7 front door trim board sub-assembly LH connector.
2. Disconnect the L8 front door trim board sub-assembly RH connector.
3. Disconnect the O3 rear door trim board sub-assembly LH connector.
4. Disconnect the N3 rear door trim board sub-assembly RH connector.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   M7-1 (+) - Body ground	Power switch off	11 to 14 V
   L8-1 (+) - Body ground	Power switch off	11 to 14 V
   O3-1 (+) - Body ground	Power switch off	11 to 14 V
   N3-1 (+) - Body ground	Power switch off	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the H11 main body ECU (multiplex network body ECU) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M7-2 (-) - H11-6 (LED2)	Always	Below 1 Ω
   L8-2 (-) - H11-6 (LED2)	Always	Below 1 Ω
   O3-2 (-) - H11-6 (LED2)	Always	Below 1 Ω
   N3-2 (-) - H11-6 (LED2)	Always	Below 1 Ω
   M7-2 (-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. Check that the ambient lights come on.
   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Interior Illumination Light1	Ambient light (for instrument panel)	ON/OFF	Power switch is turned off just before performing the Active Test.

   OK

   Ambient light come on.

NG → See step   6 

OK → See step   10 

1. Remove the interior illumination light sub-assembly. Refer to REMOVAL [08/2013 - ] .
2. Inspect the interior illumination light sub-assembly. Refer to INSPECTION [08/2013 - ] .

   OK

   Interior illumination light comes on.

NG → See step   11 

OK: Go to next step 

1. Disconnect the H73 interior illumination light sub-assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H73-5 (RRIL) - Body ground	Power switch off	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the H11 main body ECU (multiplex network body ECU) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H73-3 (-) - H11-5 (LED1)	Always	Below 1 Ω
   H73-3 (-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9