Lighting Control System (Interior) (Diagnostics & Circuit Tests): Overview Toyota 4Runner V

SYSTEM DESCRIPTION

1. ILLUMINATION CONTROL SYSTEM (Illuminated Entry System) The illuminated entry system has the following control functions: Control Outline Lighting Actuation Area-linked*1 When a registered key enters any actuation area around the doors, the lights that operate turn on. Engine switch illumination Map light assembly No. 1 room light assembly Door mirror foot light Door Lock/Unlock-linked When any door is unlocked, the lights that operate turn on. Engine switch illumination*1 Ignition key cylinder light*2 Map light assembly No. 1 room light assembly Door mirror foot light Interior foot light Inside handle illumination When all doors are closed, the lights that operate turn off. Door Open/Close-linked When any door is opened, the lights that operate turn on. Engine switch illumination*1 Ignition key cylinder light*2 Map light assembly No. 1 room light assembly Door mirror foot light Interior foot light Inside handle illumination Courtesy light When all doors are closed, the lights that operate turn off. Back Door Open/Close-linked When back door is opened, the lights that operate turn on. Spot light assembly When back doors are closed, the lights that operate turn off. Engine Switch-linked*1 Ignition Switch-linked*2 When the ignition switch is turned from ACC or ON to off, the lights that operate turn on. Engine switch illumination*1 Ignition key cylinder light*2 Map light assembly No. 1 room light assembly Interior foot light Inside handle illumination When the ignition switch is turned from off to ACC or ON the lights that operate turn on. Center console spot light Battery Saving When the doors remain in the same condition for 20 minutes and the key is outside the vehicle exterior detection area, the illumination of the items listed to the right turns off.*1 When the doors remain in the same condition for 20 minutes and the key is not in the ignition key cylinder, the illumination of the items listed to the right turns off.*2 Engine switch illumination*1 Ignition key cylinder light*2 Map light assembly No. 1 room light assembly Interior foot light Inside handle illumination Spot light assembly *1: w/ Smart Key System *2: w/o Smart Key System

OPERATION CHECK

1. INSPECT ILLUMINATED ENTRY SYSTEM OPERATION NOTE: Perform this inspection with the customize parameters at the initial setting. HINT: The illuminated entry system illuminates the lights below. Engine switch illumination*1 Ignition key cylinder light*2 Map light No. 1 room light Door mirror foot light*3 Interior foot light*4 Inside handle illumination*5 The operation and condition of this control are described below. Operation Condition Lights fade in and illuminate constantly Any door is opened when all the doors are closed. Lights illuminate for 15 seconds, and then fade out When any of the following conditions is met: The key is brought within any vehicle exterior detection area when the ignition switch is off and all the doors are closed.*1 Any door is unlocked when the ignition switch is off and all the doors are closed and locked. The ignition switch is turned from ACC to off when all doors are closed. All the doors are closed when any door is opened and the ignition switch is off. Lights fade out immediately When either of the following conditions is met: The ignition switch is turned from off to ACC when all the doors are closed. All the doors are locked when the ignition switch is off, all the doors are closed and any door is unlocked. Battery saving The doors remain in the same condition for 20 minutes and the key is outside the vehicle exterior detection area.*1 The doors remain in the same condition for 20 minutes and the key is not inserted into the ignition key cylinder.*2 *1: w/o Smart Key System *2: w/ Smart Key System *3: w/ Door Mirror Foot Light *4: w/ Interior Foot Light *5: w/ Inside Handle Illumination
2. INSPECT CENTER CONSOLE SPOT LIGHT CONTROL OPERATION NOTE: Perform this inspection with the customize parameter at the initial settings. HINT: The center console spot light control illuminates the light below. Center console spot light The operation and condition of this control are described below. Operation Condition Light fade in When either of the following conditions is met, the center console spot light fades in. The ignition switch is ACC The ignition switch is ON Light fade out The ignition switch is off.

DESCRIPTION

This circuit detects the ignition switch ON or off condition, and sends it to the main body ECU.

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This circuit detects the ignition switch ACC or off condition, and sends it to the main body ECU.

Scheme 6

The main body ECU receives a door open/closed signal from each door courtesy light switch.

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1. READ VALUE USING TECHSTREAM (DOOR COURTESY LIGHT SWITCH) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-422216-S12064364352011092600000) . MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note RR Door Courtesy SW Rear door courtesy light switch RH signal / ON or OFF ON: Rear door RH open OFF: Rear door RH closed - RL Door Courtesy SW Rear door courtesy light switch LH signal / ON or OFF ON: Rear door LH open OFF: Rear door LH closed - FR Door Courtesy SW Front door courtesy light switch RH signal / ON or OFF ON: Front door RH closed OFF: Front door RH open - FL Door Courtesy SW Front door courtesy light switch LH signal / ON or OFF ON: Front door LH closed OFF: Front door LH open - OK Normal conditions listed above are displayed. RESULT Result Proceed to OK A NG (Front door courtesy light switch does not operate) B NG (Rear door courtesy light switch does not operate) C B --> See step 3 C --> See step 5 A --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422216-S05551403972011092600000)
3. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY Remove the front door courtesy light switch. Refer to «REMOVAL»(ref-422222-S04489092972011092600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - Switch body Pin not pushed Below 1 ohms Pin pushed 10 kohms or higher NG --> See step 7 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY - MAIN BODY ECU) Disconnect the O5 or N5 front door courtesy light switch connector. Remove the main body ECU. Refer to «REMOVAL»(ref-422214-S08215784352011092600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance for LH for RH Tester Connection Condition Specified Condition O5-1 - A-2 (FLCY) Always Below 1 ohms O5-1 - Body ground Always 10 kohms or higher Tester Connection Condition Specified Condition N5-1 - A-4 (FRCY) Always Below 1 ohms N5-1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
5. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY Remove the rear door courtesy light switch. Refer to «REMOVAL»(ref-422222-S22548790602011092600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - Switch body Pin not pushed Below 1 ohms Pin pushed 10 kohms or higher NG --> See step 8 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY - MAIN BODY ECU) Disconnect the O6 or N7 rear door courtesy light switch connector. Disconnect the F8 or F9 main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance for LH for RH Tester Connection Condition Specified Condition O6-1 - F8-3 (LCTY) Always Below 1 ohms O6-1 - Body ground Always 10 kohms or higher Tester Connection Condition Specified Condition N7-1 - F9-6 (RCTY) Always Below 1 ohms N7-1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
7. REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422222-S04489092972011092600000)
8. REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422222-S22548790602011092600000)

The multiplex network door ECU receives a back door open/closed signal from the back door lock.

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1. READ VALUE USING TECHSTREAM (BACK DOOR COURTESY LIGHT SWITCH) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-422216-S12064364352011092600000) . BACK DOOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note Back Door Courtesy Switch Back door courtesy light switch signal / ON or OFF ON: Back door open OFF: Back door closed - OK Tester display changes according to opening and closing of back door. NG --> See step 3 OK --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422216-S05551403972011092600000)
3. INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY LIGHT SWITCH) Remove the back door lock. Refer to «REMOVAL»(ref-422234-S38696699052011092600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 - 3 Open-latch Below 1 ohms Full-latch 10 kohms or higher TEXT IN ILLUSTRATION Full-latch Open-latch NG --> See step 5 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MULTIPLEX NETWORK DOOR ECU) Disconnect the W8 back door lock connector. Disconnect the W10 multiplex network door ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition W8-2 (S) - W10-10 (BDCY) Always Below 1 ohms W8-2 (S) - Body ground Always 10 kohms or higher W8-3 (E) - W10-18 (CTYE) Always Below 1 ohms W8-3 (E) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MULTIPLEX NETWORK DOOR ECU
5. REPLACE BACK DOOR LOCK ASSEMBLY. Refer to «REMOVAL»(ref-422234-S38696699052011092600000)

The main body ECU controls the center console spot light.

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The main body ECU controls the inside handle illumination.

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The multiplex network door ECU controls the spot light.

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The main body ECU controls the door mirror foot light.

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