Door Mirror Foot Light Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Door Mirror Foot Light Circuit
- Door Mirror Foot Light Circuit

DESCRIPTION

* Control of the exterior foot lights is performed by the mirror control ECU, which is installed inside the driver door and turns on/off the puddle light in each door mirror.

* The mirror control ECU uses CAN communication to receive signals transmitted from each ECU (the IG SW signal, park shift position signal, driver seat courtesy signal, passenger seat courtesy signal, and door lock/unlock output factor signal) and then controls the illumination of the exterior foot lights.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (FOOT LIGHT)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Mirror ECU / Active Test / Foot Light.

(e) Check that the Puddle light turns on/off.

Mirror ECU





OK:

Puddle light turns on/off.

NG -- CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR - MIRROR ECU, BODY GROUND)
OK -- Continue to next step.

2. CHECK CAN COMMUNICATION SYSTEM

(a) Check for CAN communication system DTCs output.

OK:

CAN communication system DTCs are not output.

NG -- GO TO CAN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
OK -- Continue to next step.

3. CHECK VEHICLE CONDITION

(a) Identify the control system where the problem occurs.

Result





E -- READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH)

D -- READ VALUE USING TECHSTREAM (COURTESY SWITCH)

C -- READ VALUE USING TECHSTREAM (IG SW)

B -- READ VALUE USING TECHSTREAM (SHIFT SW STATUS (P RANGE))

A -- REPLACE OUTER MIRROR CONTROL ECU

4. READ VALUE USING TECHSTREAM (SHIFT SW STATUS (P RANGE))

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus:

(1) for 1UR-FE engine model: Powertrain / ECT / Data List / Shift SW Status (P Range)

(2) for 3UR-FE, 3UR-FBE engine model: Powertrain / Engine and ECT / Data List / Shift SW Status (P Range)

(e) According to the display on the Techstream, read the Data List.

ECT*1 or Engine and ECT*2





*1: for 1UR-FE engine model

*2: for 3UR-FE, 3UR-FBE engine mode

OK:

The Techstream display changes normally when shift lever is moved.

Result





E -- GO TO FLOW CHART (PARK/NEUTRAL POSITION SWITCH CIRCUIT) How to Proceed With Troubleshooting

D -- GO TO FLOW CHART (PARK/NEUTRAL POSITION SWITCH CIRCUIT)

C -- GO TO FLOW CHART (PARK/NEUTRAL POSITION SWITCH CIRCUIT)

B -- GO TO FLOW CHART (PARK/NEUTRAL POSITION SWITCH CIRCUIT)

A -- REPLACE OUTER MIRROR CONTROL ECU

5. READ VALUE USING TECHSTREAM (IG SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List / IG SW.

(e) According to the display on the Techstream, read the Data List.

Main Body





OK:

The Techstream display changes normally when ignition switch is operated.

NG -- INSPECT FUSE (ECU-IG NO. 2)

OK -- REPLACE OUTER MIRROR CONTROL ECU

6. INSPECT FUSE (ECU-IG NO. 2)

(a) Remove the ECU-IG No. 2 fuse from the main Body ECU.





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

Standard Resistance:





(c) Reinstall the ECU-IG No. 2 fuse.

NG -- REPLACE FUSE

OK -- REPLACE MAIN BODY ECU

7. READ VALUE USING TECHSTREAM (COURTESY SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) According to the display on the Techstream, read the Data List.

Main Body





OK:

The Techstream display changes normally when door courtesy light switch is operated.

NG -- GO TO DOOR COURTESY SWITCH CIRCUIT Door Courtesy Switch Circuit

OK -- REPLACE OUTER MIRROR CONTROL ECU

8. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List / D-Door Lock Pos SW.

(e) According to the display on the Techstream, read the Data List.

Main Body





OK:

The Techstream display changes normally when door lock switch is operated.

NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM How To Proceed With Troubleshooting

OK -- REPLACE OUTER MIRROR CONTROL ECU

9. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR - MIRROR ECU, BODY GROUND)





(a) for LH:

(1) Disconnect the M5 outer rear view mirror assembly LH connector.

(2) Disconnect the M8 mirror control ECU connector.

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

Standard Resistance:





(4) Reconnect the mirror control ECU connector.

(5) Reconnect the outer rear view mirror assembly LH connector.

(b) for RH:

(1) Disconnect the L6 outer rear view mirror assembly RH connector.

(2) Disconnect the M8 mirror control ECU connector.

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

Standard Resistance:





(4) Reconnect the mirror control ECU connector.

(5) Reconnect the outer rear view mirror assembly RH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

10. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY

(a) Remove the outer rear view mirror assembly Removal.





(b) Apply battery voltage to the terminals and check that the puddle light turn on.

OK:





(c) Reinstall the outer rear view mirror assembly.

NG -- INSPECT PUDDLE LIGHT

OK -- REPLACE OUTER MIRROR CONTROL ECU

11. INSPECT PUDDLE LIGHT

(a) Temporarily replace the puddle light bulb with a new or normally functioning one Removal.

(b) Check that the puddle light turn on.

OK:

Puddle light turn on.

NG -- REPLACE OUTER REAR VIEW MIRROR ASSEMBLY Removal

OK -- END