Lighting System (Diagnostics - Introduction): Other Toyota Corolla XI

PRECAUTION [08/2013 - ]

1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected: System See Procedure Air Conditioning System (for Automatic Air Conditioning System) Refer to «INITIALIZATION [08/2013 - ]»(ref-635429-S20696467122014070300000)
2. EXPRESSIONS OF IGNITION SWITCH The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this article. Expression Switch Type Ignition Switch (Position) Engine Switch (Condition) Ignition Switch off LOCK Off (Lock) Ignition Switch ACC ACC On (ACC) Ignition Switch ON ON On (IG) Engine Start START On (Start)
3. PRECAUTION FOR HEADLIGHT BULB REPLACEMENT If even a thin film of oil is left on the surface of a halogen bulb, its service life will be shortened because the light will burn at a higher temperature. When replacing a bulb, be sure to hold the flanged part of the light so that your hand does not contact the glass part of the bulb. Always prepare a new bulb for immediate replacement. While replacing the bulb, the lens may attract dust and moisture if removed from the vehicle for a long time. Always replace a bulb with another bulb of the same wattage. If only replacing the bulb on one side, differences in brightness and lighting color between the right and left sides may occur. Securely install the socket after bulb replacement. The lens may become cloudy or the light cavity may be filled with water through gaps around the socket if it is not installed securely.

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CAUTION / NOTICE / HINT

HINT

1. Use the following procedure to troubleshoot the lighting system.
2. *: Use the Techstream.

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP Result Proceed to NEXT Result: 1 NEXT See step 2
2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK Result Proceed to NEXT Result: 1 NEXT See step 3
3. INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. Result Proceed to NEXT Result: 1 NEXT See step 4
4. INSPECT CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000) and «DIAGNOSIS SYSTEM [04/2014 - ]»(ref-635652-S02842089492014070300000) Result Result Proceed to CAN communication system DTCs are not output. A CAN communication system DTCs are output. B Result: 2 B GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635647-S27781195552014070300000) Result: 1 A See step 5
5. CHECK FOR DTC* Check for DTCs. Refer to «DTC CHECK / CLEAR [08/2013 - ]»(ref-635445-S23081568162014070300000) Body Electrical > Main Body > Trouble Codes Result Result Proceed to DTCs are not output. A DTCs are output. B Result: 2 B See step 8 Result: 1 A See step 6
6. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635445-S33172269652014070300000) Result Result Proceed to Fault is not listed in Problem Symptoms Table. A Fault is listed in Problem Symptoms Table. B Result: 2 B GO TO PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [08/2013 - ]»(ref-635445-S33172269652014070300000) Result: 1 A See step 7
7. OVERALL ANALYSIS AND TROUBLESHOOTING* Data List / Active Test Refer to «DATA LIST / ACTIVE TEST [08/2013 - ]»(ref-635445-S09386678062014070300000) Terminals of ECU Refer to «TERMINALS OF ECU [08/2013 - ]»(ref-635445-S35690490992014070300000) Inspection On-vehicle Inspection Result Proceed to NEXT Result: 1 NEXT See step 8
8. ADJUST, REPAIR OR REPLACE Result Proceed to NEXT Result: 1 NEXT See step 9
9. CONFIRMATION TEST Result Proceed to NEXT Result: 1 NEXT END

FAIL-SAFE CHART [08/2013 - ]

1. LED HEADLIGHT SYSTEM The light control LED ECU operates in fail-safe mode if any of the following abnormal conditions are detected. Item Abnormality Detection Condition Return Condition Abnormal input voltage (High input voltage) Abnormal power source voltage (more than 17 V) is detected. Normal power source voltage (10 to 16 V) is detected. Abnormal input voltage (Low input voltage)*1 If the power source voltage is too low (8.5 to 10 V), LED output current will be limited. (Headlights will remain illuminated.) Output current limit is canceled when the voltage returns to the specified operating voltage (10 to 16 V). If the power source voltage is too low (below 6 V), headlight operation will stop. If the voltage returns to 8.5 V or more, headlight operation will resume. Abnormal output Open in output side circuit Short between output terminal and body ground Short between output terminals (Hi and Lo) Light control switch is turned from off to the head position. *1: When the headlights are on and the input voltage is between 6 and 10 V, the headlights dim.
2. AUTOMATIC LIGHT CONTROL SYSTEM If the main body ECU (multiplex network body ECU) detects a malfunction in the automatic light control sensor, the main body ECU (multiplex network body ECU) performs fail-safe control to prohibit the automatic light control. If the low beam headlights and taillights are on, the lights will remain on until the light control switch is turned off.