Lighting: Diagnosis Scion tC I

PROBLEM SYMPTOMS TABLE

HINT

Use the table (Scheme 36), with suspected areas listed in numerical order, to determine the cause of the problem.

Inspect and repair or replace parts as necessary according to the steps in the following information.

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

1. HEADLAMP AND TAIL LAMP SYSTEM
2. TURN SIGNAL AND HAZARD WARNING SYSTEM
3. STOP LAMP SYSTEM
4. BACK UP LAMP SYSTEM
5. INTERIOR LAMP SYSTEM
6. ILLUMINATION SYSTEM

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

Scheme 47

1. INSPECT TURN SIGNAL FLASHER OPERATION Inspect power source circuit and ground circuit Remove the turn signal flasher relay from the instrument panel junction block assy. Measure the voltage according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S36334104482006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - Body ground Ignition switch OFF Below 1 V 1 - Body ground Ignition switch ON 10 to 14 V 4 - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S05229368902006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 7 - Body ground Always Below 1 ohm Inspect output operation signal Install the turn signal flasher relay to the instrument panel junction block assy. Measure the voltage according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S07338392042006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1A-27 - Body ground Hazard warning switch OFF -> ON 0 V -> 0 < = > above 9 V (60 to 120 times per minute) 1A-27 - Body ground Turn signal switch (left turn) OFF -> ON 0 V - > 0 < = > above 9 V (60 to 120 times per minute) 1A-28 - Body ground Hazard warning switch OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1A-28 - Body ground Turn signal switch (right turn) OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1B-14 - Body ground Hazard warning signal OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1B-14 - Body ground Turn signal switch (left turn) OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1B-31 - Body ground Hazard warning signal OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1B-31 - Body ground Turn signal switch (right turn) OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1S-11 - Body ground Turn signal switch (left turn) OFF -> ON Above 9 V -> 0 V 1S-12 - Body ground Turn signal switch (right turn) OFF -> ON Above 9 V -> 0 V 1S-13 - Body ground Hazard warning signal OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1S-13 - Body ground Turn signal switch (left turn) OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1S-16 - Body ground Hazard warning switch OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1S-16 - Body ground Turn signal switch (right turn) OFF -> ON 0 V ->0 < = > above 9 V (60 to 120 times per minute) 1S-17 - Body ground Hazard switch OFF -> ON Above 9 V -> 0 V
2. INSPECT REAR COMBINATION LAMP ASSY Measure the voltage according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S21088743422006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 2 - 6 Light control switch is in TAIL position 10 to 14 V 3 - 6 Shift position R 10 to 14 V 4 - 6 Turn signal switch is in LH (RH) position 0 V -> 0 < = > above 9 V (60 to 120 times per minute) 5 - 6 Brake pedal is depressed 10 to 14 V
3. INSPECT LICENSE PLATE LAMP ASSY Measure the voltage according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S36152246152006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Light control switch is in TAIL position 10 to 14 V
4. INSPECT CENTER STOP LAMP ASSY Measure the voltage according to the value(s) in the table below. Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Brake pedal is depressed 10 to 14 V
5. INSPECT INTEGRATION RELAY (INSTRUMENT PANEL JUNCTION BLOCK ASSY)
6. ILLUMINATED ENTRY SYSTEM OPERATION CHECK Front illuminated entry system controls the following: Ignition key cylinder lamp Map lamp assy (When the switch is in DOOR position) Room lamp assy (When the switch is in DOOR position) Check that the lamps come on (fade in) after: One of the following doors is opened: driver's door, passenger door, back door. Driver's door is unlocked with the ignition switch off and all doors closed. Check that the lamps go off (fade out) after: 15 seconds have elapsed with all doors closed and the ignition switch off. All doors are closed and the ignition switch is turned on. Driver's door is locked with all doors closed and the ignition switch off. 20 minutes have elapsed with the ignition key not inserted into the cylinder and no doors opened or closed. (Battery saver function)
7. BATTERY SAVER OPERATION CHECK Remove the ignition key and close all the doors. Open the driver's door to turn the ignition key cylinder lamp, map lamp and room lamp on, and leave it open. Check that the ignition key cylinder lamp, map lamp and room lamp go off in about 20 minutes. After the ignition key cylinder lamp, map lamp and room lamp go off, close the driver's door. Open any door to turn the ignition key cylinder lamp, map lamp and room lamp on, and then open another door. Check that the ignition key cylinder lamp, map lamp and room lamp go off within 20 minutes after opening the doors. Close all the doors. With the ignition key inserted, open any door to turn the ignition key cylinder lamp, map lamp and room lamp on, and then remove the ignition key. Check that the ignition key cylinder lamp, map lamp and room lamp go off within 20 minutes. HINT: When the battery saver function is in operation, the lamps do not come on unless the ignition switch is turned on or any doors is opened or closed.

Scheme 48

Scheme 49

Scheme 50

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

Scheme 60

1. HEADLAMP DIMMER SWITCH ASSY Inspect light control switch continuity. Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S37242685652006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 13 - 16 OFF 10 kohm or higher 14 - 16 OFF 10 kohm or higher 14 - 16 TAIL Below 1 ohm 13 - 16 HEAD Below 1 ohm 14 - 16 HEAD Below 1 ohm Inspect headlight dimmer switch continuity. Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S25897299062006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 8 - 16 FLASH Below 1 ohm 7 - 8 FLASH Below 1 ohm 16 - 17 LOW BEAM Below 1 ohm 7 - 16 HIGH BEAM Below 1 ohm Inspect turn signal switch continuity. Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S23856767842006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Left turn Below 1 ohm 1 - 2 Neutral 10 kohm or higher 2 - 3 Neutral 10 kohm or higher 2 - 3 Right turn Below 1 ohm
2. HEADLAMP RELAY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S30844725862006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Specified Condition 3 - 5 10 kohm or higher 3 - 5 Below 1 ohm (When battery voltage applied to terminals 1 - 2)
3. TAIL LAMP RELAY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S32196456802006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Specified Condition 3 - 5 10 kohm or higher 3 - 5 Below 1 ohm (When battery voltage applied to terminals 1 - 2)
4. AIR CONDITIONING PANEL SUB-ASSY Inspect hazard warning switch continuity. Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S08497939662006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 9 - 25 OFF 10 kohm or higher 9 - 25 ON Below 1 ohm Connect the positive lead (+) from the battery to terminal 25 and the negative (-) lead to terminal 9, then check that the lamp comes on. OK: Lamp comes on.
5. STOP LAMP SWITCH ASSY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S15373521552006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Switch pin free Below 1 ohm 3 - 4 Switch pin free 10 kohm or higher 1 - 2 Switch pin pushed in 10 kohm or higher 3 - 4 Switch pin pushed in Below 1 ohm
6. BACK UP LAMP SWITCH ASSY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S04559407622006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 OFF 10 kohm or higher 1 - 2 ON Below 1 ohm
7. PARK/NEUTRAL POSITION SWITCH ASSY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S08713318442006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Shift position R Below 1 ohm 1 - 2 Any shift position except R 10 kohm or higher
8. TRANSPONDER KEY AMPLIFIER Inspect ignition key cylinder lamp operation. Connect the battery positive (+) lead from the battery to terminal 2 and the battery negative (-) lead to terminal 6, then check that the illumination comes on. OK: Illumination comes on.
9. FRONT DOOR COURTESY LAMP SWITCH ASSY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S17161140352006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - Switch body ON (When shaft is pressed) 10 kohm or higher 1 - Switch body OFF (When shaft is not pressed) Below 1 ohm
10. BACK DOOR LOCK ASSY Inspect back door courtesy lamp switch. Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S09564188712006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Back door is closed 10 kohm or higher 1 - 2 Back door is opened Below 1 ohm
11. MAP LAMP ASSY Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S32667131852006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 3 - 4 Switch is OFF 10 kohm or higher 3 - 8 Switch is OFF 10 kohm or higher Connect the battery positive (+) lead from the battery to terminal 3 and the battery negative (-) lead to terminal 8, then check that the lamp comes on when the switch is in the DOOR position. OK: Lamp comes on. Connect the battery positive (+) lead from the battery to terminal 3 and the battery negative (-) lead to terminal 4, then check that the lamp comes on when the switch is in the ON position. OK: Lamp comes on.
12. ROOM LAMP ASSY NO.1 Measure the resistance according to the value(s) in the table shown in «TESTER CONNECTION CONDITION SPECIFICATION»(ref-224788-S00847304722006031100000) . Standard: TESTER CONNECTION CONDITION SPECIFICATIONS Tester Connection Condition Specified Condition 1 - 2 Switch is OFF 10 kohm or higher 1 - 3 Switch is OFF 10 kohm or higher Connect the battery positive (+) lead from the battery to terminal 1 and the battery negative (-) lead to terminal 2, then check that the lamp comes on when the switch is in the DOOR position. OK: Lamp comes on. Connect the battery positive (+) lead from the battery to terminal 1 and the battery negative (-) lead to terminal 3, then check that the lamp comes on when the switch is in the ON position. OK: Lamp comes on.
13. ROOM LAMP ASSY NO.2 Connect the battery positive (+) lead from the battery to terminal 2 and the battery negative (-) lead to terminal 1, then check that the lamp comes on when the switch is in the ON position. OK: Lamp comes on.
14. INDICATOR LAMP ASSY Inspect front console illumination. Connect the battery positive (+) lead from the battery to terminal 1 and the battery negative (-) lead to terminal 2, then check that the illumination comes on. OK: Illumination comes on.

Scheme 61