Lighting System (Diagnostics - Introduction): Overview Toyota RAV4 IV

SYSTEM DESCRIPTION

1. LIGHTING SYSTEM Illumination control system (Illuminated entry system): When the doors are unlocked by a key or transmitter operation, or when a door is opened or closed, the illuminated entry system turns on the room light, map light, foot light and transponder key amplifier*. *: w/o Smart Key System The main body ECU receives the following signals (A). Door courtesy switch signal Door detection switch signal Ignition switch signal The main body ECU controls the following signal based on the signals listed in A. Illumination operation signal The main body ECU controls the on/off and fade-in/fade-out operation of the following parts. Room light Map light Foot light Transponder key amplifier* *: w/o Smart Key System Battery saver system: When the ignition switch is turned off and any of the doors is open continuously for 20 minutes, the main body ECU turns the illumination operation signal off. As a result, the room light, map light, foot light and transponder key amplifier* turn off. *: w/o Smart Key System The main body ECU receives the following signals (B). Door courtesy switch signal Ignition switch signal The main body ECU controls the following signal based on the signals listed in B (C). Illumination operation signal The main body ECU controls the illumination period of the following parts based on the signals listed in C. Room light Map light Foot light Transponder key amplifier* *: w/o Smart Key System Manual light control system: This system functions when lights such as the headlights and taillights are illuminated by manual operation of the light control switch. The main body ECU receives the following signals (D). Light control switch signal Headlight dimmer switch signal Front fog light switch signal The main body ECU controls the following signals based on the signals listed in D (E). Headlight relay operation signal Taillight relay operation signal Daytime running light No. 2 relay operation signal Daytime running light No. 3 relay operation signal Daytime running light No. 4 relay operation signal Front fog light relay operation signal The main body ECU controls the on/off operation of the following parts based on the signals listed in E. Headlight (LOW) Headlight (HIGH) Side marker light (front and rear) Front fog light Light auto turn off system: When the headlights and taillights are illuminated by the operation of the light control switch, if the ignition switch is turned off, this system continues illuminating the headlights and taillights for approximately 30 seconds, and then turns off the lights. However, when all the doors are locked manually, using the door lock button, using the key or pressing LOCK on the transmitter turns the headlights and taillights off immediately. The main body ECU receives the following signals (F). Door courtesy switch signal Ignition switch signal The main body ECU controls the following signals based on the signals listed in F (G). Headlight relay operation signal Taillight relay operation signal Daytime running light No. 2 relay operation signal Daytime running light No. 3 relay operation signal Daytime running light No. 4 relay operation signal Front fog light relay operation signal The main body ECU controls the illumination period of the following parts based on the signals listed in G. Headlight (LOW) Headlight (HIGH) Side marker light (front and rear) Front fog light Automatic light control system: When the automatic light control sensor is ON while the vehicle is being driven and the light control switch is in the AUTO position, the headlights and taillights automatically illuminate. When this system is operating with the lights ON, turning the ignition switch off and opening the driver's door turns off the lights. The main body ECU receives the following signals (H). Door courtesy switch signal Automatic light control sensor signal Light control switch signal The main body ECU controls the following signals based on the signals listed in H (I). Headlight relay operation signal Taillight relay operation signal Panel relay operation signal The main body ECU controls the illumination period of the following parts based on the signals listed in I. Headlight Taillight Clearance light Daytime running light system: This system is directly connected to the high-beam headlights and is designed to automatically activate the daytime running lights in order to increase the visibility of the vehicle. The main body ECU receives the following (J). Ignition switch signal Engine speed Parking brake switch signal Light control switch signal The main body ECU controls the following signal based on the signals listed in J (K). Daytime running light No. 2 relay operation signal The main body ECU controls the on/off operation of the following part based on the signal listed in K. Headlight (HIGH)

OPERATION CHECK

1. ILLUMINATED ENTRY SYSTEM OPERATION CHECK The illuminated entry system controls the following lights: Transponder key amplifier* Foot light Map light and room light *: w/o Smart Key System Check that the lights come on when unlocking any of the doors that are closed and locked with the ignition switch off. Then check that the lights fade out under the following conditions: Leave the doors unlocked for 15 seconds. Turn the ignition switch to ACC or ON. Lock all the doors. Check that the lights stay on for at least 15 seconds after opening any of the doors before fading out. Then check that the lights fade out 15 seconds after closing all the doors. Check that the lights stay lit after turning the ignition switch off with all the doors closed and the ignition switch in the ACC or ON position. Then check that the lights fade out under the following conditions: Leave the doors unlocked for 15 seconds. Turn the ignition switch to ACC or ON. Lock all the doors. Check that the lights stay on for at least 15 seconds after opening any of the doors. Then check that the lights fade out 15 seconds after closing all the doors. Check that the lights come on when opening any of the doors and fade out when closing and locking all the doors or turning the ignition switch to the ACC or ON position.
2. FOOT LIGHT OPERATION CHECK Check that the lights come on when unlocking any of the doors that are closed and locked with the ignition switch off. Then check that the lights fade out under the following conditions: Leave the doors unlocked for 15 seconds. Lock all the closed doors and turn the ignition switch off. Check that the lights stay on for at least 15 seconds under the following conditions before going off. Turn the ignition switch to ON, and move the shift lever to the P position. Open any of the doors. Check that the lights dim before going off when turning the ignition switch to ON and shifting the shift lever into any position other than P. Check the conditions below before the lights go off. The lights dim when shifting the shift lever into a position other than P and closing all the doors with the ignition switch ON. The lights come on for 15 seconds and fade out when shifting the shift lever into the P position and closing all the doors with the ignition switch off. Check that the lights come on after opening any of the doors. Check that the lights fade out 15 seconds after closing all the doors, or locking all the doors. Check that the lights come on gradually with the ignition switch ON and the shift lever in the P position. Check that the lights dim when shifting the shift lever from P into another position with all the doors closed. Check that the lights stay dimmed with the ignition switch ON and the shift lever in a position other than P.
3. BATTERY SAVER OPERATION CHECK Turn the ignition switch off and close all the doors. Open any door to turn the room light on, and leave it open. Check that the light goes off after about 20 minutes. After the room light goes off, close the driver's door. Open any door to turn the room light on, and then open another door. Check that the room light goes off within 20 minutes after opening the doors. Close all the doors. Open any door to turn the room light on. Check that the room light goes off within 20 minutes.
4. LIGHT AUTO TURN OFF OPERATION CHECK Turn the ignition switch to ON, and turn the light control switch to the TAIL or HEAD position. Turn the ignition switch off and open the driver's door, and check that the headlights go off after about 30 seconds. Turn the ignition switch to ON, and turn the light control switch to the TAIL or HEAD position. Turn the ignition switch off and open the driver's door. Before the headlight goes off after about 30 seconds, lock all the doors and press the LOCK switch on the wireless transmitter. Check that the headlights go off immediately.
5. AUTOMATIC LIGHT CONTROL OPERATION CHECK Turn the ignition switch to ON. Turn the light control switch to the AUTO position. Cover the automatic light control sensor and check that the taillights and headlights come on in that order. Uncover the automatic light control sensor and check that the headlights and taillights go off in that order.
6. DAYTIME RUNNING LIGHT OPERATION CHECK Check that the headlights come on when the light control switch is off with the engine running and the parking brake released. Then check that the lights go off under the following conditions: Turn the light control switch to the TAIL or HEAD position. Turn the ignition switch off. Check that the headlights go off immediately.