Lighting System: Inspection

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

HEADLAMP DIMMER SWITCH ASSY

Inspect light control switch continuity.

Check that there is continuity between terminals at each switch position as shown in LIGHT CONTROL SWITCH SPECIFIED CONDITION CHART .

LIGHT CONTROL SWITCH SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
OFF	-	No continuity
TAIL	14 - 16	Continuity
HEAD	13 - 16 - 14	Continuity
AUTO	16 - 12	Continuity

Inspect headlight dimmer switch continuity.

Check that there is continuity between terminals at each switch position as shown in HEADLIGHT DIMMER SWITCH SPECIFIED CONDITION CHART .

HEADLIGHT DIMMER SWITCH SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
FLASH	7 - 8 - 16	Continuity
LOW BEAM	16 - 17	Continuity
HI BEAM	7 - 16	Continuity

Fig 1: Identifying Headlamp Dimmer Switch Assy Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Inspect turn signal switch continuity.

Check that there is continuity between terminals at each switch position as shown in TURN SIGNAL SWITCH SPECIFIED CONDITION CHART .

TURN SIGNAL SWITCH SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
Right turn	2 - 3	Continuity
Neutral	-	No continuity
Left turn	1 - 2	Continuity

Inspect front fog light switch continuity.

Check that there is continuity between terminals at each switch position as shown in FRONT FOG LIGHT SPECIFIED CONDITION CHART .

FRONT FOG LIGHT SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
OFF	-	No continuity
ON	10 - 11	Continuity

HAZARD WARNING SIGNAL SWITCH ASSY

Check that there is continuity between terminals at each switch position as shown in HAZARD WARNING SIGNAL SPECIFIED CONDITION CHART .

HAZARD WARNING SIGNAL SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
OFF	1 - 4	No continuity
ON	1 - 4	Continuity
Illumination circuit	8 - 9	Continuity

Inspect illumination operation.
1. Connect the positive (+) lead from the battery to terminal 8 and negative (-) lead to terminal 9, then check that the illumination lights up.

LUGGAGE COMPARTMENT DOOR LOCK ASSY
1. Inspect luggage compartment door courtesy lamp switch continuity.
  1. Check that there is continuity between terminal 2 and body ground when switch is operated.
    Standard:
    
    ON (When shaft is pressed): No continuity
    
    OFF (When shaft is not pressed): Continuity
    
    Fig 2: Luggage Compartment Door Lock Assy Converter Terminal
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

FOG LAMP RELAY

Inspect relay continuity.

FOG LAMP RELAY SPECIFIED CONDITION CHART

Condition	Tester connection	Specified condition
Constant	1 - 2	Continuity
Apply B+ between terminals 1 and 2.	3 - 5	Continuity

Fig 3: Measuring Relay Continuity For Fog Lamp

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ROOF CONSOLE BOX ASSY
1. Inspect map lamp continuity.
  1. Check that there is continuity between terminal 6 and 7 when switch is operated.
    Standard:
    
    ON: Continuity OFF: No continuity
    
    Fig 4: Identifying Roof Console Box Assy Converter Terminal
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ROOM LAMP ASSY NO.1

Inspect room lamp assy No. 1 continuity.

Check that there is continuity between terminals at each switch position as shown in ROOM LAMP ASSEMBLY SPECIFIED CONDITION CHART .

Standard:

ROOM LAMP ASSEMBLY SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
OFF	-	No continuity
DOOR	1 - 2	Continuity
ON	1 - 3	Continuity

Fig 5: Identifying Room Lamp Assy No.1 Converter Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

COURTESY LAMP ASSY
1. Inspect courtesy lamp assy continuity.
  1. Check that there is continuity between terminals when switch is operated.
    Standard:
    
    ON (When shaft is pressed): No continuity
    
    OFF (When shaft is not pressed): Continuity
GLOVE BOX LAMP ASSY
1. Inspect glove box lamp assy continuity.
  1. Check that there is continuity between terminals when switch is operated.
    Standard:
    
    ON (When shaft is pressed): No continuity
    
    OFF (When shaft is not pressed): Continuity
LUGGAGE COMPARTMENT LAMP ASSY NO.1
1. Inspect luggage compartment lamp assy No. 1.
2. Check that there is continuity between terminals when switch is operated.
  Standard:
  
  ON: Continuity OFF:
  
  No continuity

TAIL LAMP RELAY

Inspect relay continuity.

TAIL LAMP RELAY SPECIFIED CONDITION CHART

Switch operation	Tester connection	Specified condition
Constant	1 - 2	Continuity
Apply B+ between terminal 1 and 2	3 - 5	Continuity

Fig 6: Checking Tail Lamp Relay Continuity

DAY TIME RUNNING LIGHT RELAY NO.1

Inspect relay continuity.

DAY TIME RUNNING LIGHT RELAY NO.1 SPECIFIED CONDITION CHART

Condition	Tester connection	Specified condition
Constant	1 - 3, 2 - 4	Continuity
Apply B+ between terminal 1 and 3	4 - 5	Continuity

Fig 7: Checking Day Time Running Light Relay No.1 Continuity

DAY TIME RUNNING LIGHT RELAY NO.2

Inspect relay continuity.

DAY TIME RUNNING LIGHT RELAY NO.2 SPECIFIED CONDITION CHART

Condition	Tester connection	Specified condition
Constant	1 - 2	Continuity
Apply B+ between terminal 1 and 2	3 - 5	Continuity

Fig 8: Identifying Day Time Running Light Relay No.2 Continuity