Door Mirror Foot Light Circuit: Procedure

1. Connect Techstream to the DLC3.
2. Turn the ignition switch on (IG).
3. Turn Techstream on.
4. Select the following menu items: Body Electrical / Main Body / Active Test.
5. Check the operation.
   MAIN BODY
   
   

   Item	Test Details	Diagnostic Note
   Side Mirror Foot Light	Door mirror foot lights ON / OFF	-

   OK

   Door mirror foot lights come on.

NG → See step   2 

OK → See step   7 

1. Disconnect the D7 main body ECU connector.
   Fig 1: Inspecting Main Body ECU (Instrument Panel Junction Block)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a service wire, connect D7-4 of the wire harness side and body ground.

   OK

   Door mirror foot lights come on.

NG → See step   3 

OK → REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) 

1. Remove the G/H fuse from the engine room relay block.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   G/H fuse	Always	Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Remove the door mirror foot light relay from the No. 2 engine room relay block.
   Fig 2: Measuring Resistance Of Door Mirror Foot Light Relay (MIR LP)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   3 - 5	Voltage is not applied between terminals 1 and 2	10 kΩ or higher
   3 - 5	Apply the battery voltage between terminals 1 and 2	Below 1 Ω

NG → REPLACE DOOR MIRROR FOOT LIGHT RELAY 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 3: Checking Harness And Connector (Battery - Door Mirror Foot Light Relay)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Condition	Specified Condition
   Door mirror foot light relay terminal 5 - Body ground	Always	11 to 14 V
   Door mirror foot light relay terminal 2 - Body ground	Always	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the D7 main body ECU connector.
   Fig 4: Checking Harness And Connector (Door Mirror Foot Light Relay - Main Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   Door mirror foot light relay terminal 1 - D7-4 (MLRY)	Always	Below 1 Ω
   D7-4 (MLRY) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (DOOR MIRROR FOOT LIGHT RELAY - MAIN BODY ECU) 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (DOOR MIRROR FOOT LIGHT RELAY - BODY GROUND)