Section 1000 (Interior Light System): Inspection

WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

w/ Sliding Roof:

INSPECT FRONT PERSONAL LIGHT SWITCH CONTINUITY

FRONT PERSONAL LIGHT SWITCH TERMINALS CONTINUITY (W/ SLIDING ROOF)

Switch position	Tester connection	Specified condition
OFF	-	No continuity
ON	1-4	Continuity

If continuity is not as specified, replace the light assembly or bulb.

Fig 1: Inspecting Front Personal Light Switch Continuity (W/Sliding Roof)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

w/o Sliding Roof:

INSPECT FRONT PERSONAL LIGHT SWITCH CONTINUITY

FRONT PERSONAL LIGHT SWITCH TERMINALS CONTINUITY (W/O SLIDING ROOF)

Switch position	Tester connection	Specified condition
OFF	-	No continuity
ON	1-2	Continuity

If continuity is not as specified, replace the light assembly or bulb.

Fig 2: Inspecting Front Personal Light Switch Continuity (W/O Sliding Roof)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT FRONT PERSONAL LIGHT SWITCH CIRCUIT (See ILLUMINATION CIRCUIT )
w/o Reader sensor:
INSPECT ROOM LIGHT CONTINUITY
1. Disconnect the connector from the room light.
2. Turn the room light switch ON, check that continuity exists between terminal 2 and body ground.
  
  Fig 3: Checking Continuity Between Terminal 2 & Body Ground (W/O Reader Sensor)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the room light switch DOOR, check that continuity exists between terminals 1 and 2.
If continuity is not as specified, replace the light assembly or bulb.

Fig 4: Checking Continuity Between Terminals 1 & 2 (W/O Reader Sensor)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
w/ Reader sensor:
INSPECT ROOM LIGHT CONTINUITY
1. Disconnect the connector from the room light.
2. Turn the room light switch ON, check that continuity exists between terminal 2 and 3.
  
  Fig 5: Checking Continuity Between Terminal 2 & 3 (W/ Reader Sensor)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the room light switch DOOR, check that continuity exists between terminals 1 and 3.
If continuity is not as specified, replace the light assembly or bulb.

Fig 6: Checking Continuity Between Terminal 1 & 3 (W/ Reader Sensor)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT FRONT DOOR COURTESY SWITCH CONTINUITY
1. Check that continuity exists between terminals and the switch body with the switch ON (switch pin released: opened door).
2. Check that no continuity exists between terminals and the switch body with the switch OFF (switch pin pushed in: closed door).
If operation is not as specified, replace the switch.

Fig 7: Inspecting Front Door Courtesy Switch Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT REAR DOOR COURTESY SWITCH CONTINUITY
1. Check that continuity exists between terminals and the switch body with the switch ON (switch pin released: opened door).
2. Check that no continuity exists between terminals and the switch body with the switch OFF (switch pin pushed in: closed door).
If operation is not as specified, replace the switch.

Fig 8: Inspecting Rear Door Courtesy Switch Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CONTINUITY
1. Check that continuity exists between terminals and the switch body with the switch ON (switch pin released: opened door).
2. Check that no continuity exists between terminals and the switch body with the switch OFF (switch pin pushed in: closed door).
If operation is not as specified, replace the switch.

Fig 9: Inspecting Luggage Compartment Door Courtesy Switch Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT LUGGAGE COMPARTMENT LIGHT CONTINUITY
Using the ohmmeter, check that continuity exists between terminals.

If continuity is not as specified, replace the light assembly or bulb.

Fig 10: Inspecting Luggage Compartment Light Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

REAR ROOM LIGHT SWITCH CONTINUITY

REAR ROOM LIGHT SWITCH TERMINALS CONTINUITY

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

If continuity is not as specified, replace the light assembly or bulb.

Fig 11: Rear Room Light Switch Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VANITY LIGHT CONTINUITY

VANITY LIGHT SWITCH TERMINALS CONTINUITY

Switch position	Tester connection	Specified condition
OFF (closed)	-	No continuity
ON (opened)	1-2	Continuity

If continuity is not as specified, replace the vanity light assembly or bulb.

Fig 12: Inspecting Vanity Light Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VANITY LIGHT CIRCUIT (See ILLUMINATION CIRCUIT )

Disconnect the connector from the light and inspect the connector on the wire harness side, as shown in Fig 13 .

Fig 13: Identifying Vanity Light Circuit

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

VANITY LIGHT SWITCH CONNECTOR TERMINALS SPECIFIED CONDITION

Tester connection	Condition	Specified condition
2 - Ground	Always	Continuity
1 - Ground	Always	Battery Positive Voltage

If circuit is not as specified, inspect power source or wire harness.

INSPECT DOOR COURTESY LIGHT CONTINUITY
Using an ohmmeter, check that continuity exists between terminals.

If continuity is not as specified, replace the light assembly or bulb.

Fig 14: Inspecting Door Courtesy Light Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT DOOR COURTESY LIGHT CIRCUIT (See ILLUMINATION CIRCUIT )

Fig 15: Inspecting Door Courtesy Light Circuit
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CONTINUITY

LUGGAGE COMPARTMENT DOOR COURTESY SWITCH TERMINALS CONTINUITY

Switch position	Tester connection	Specified condition
OFF (closed)	-	No continuity
ON (opened)	2 - Switch body	Continuity

If continuity is not as specified, replace the switch.

Fig 16: Inspecting Luggage Compartment Door Courtesy Switch Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

BACK DOOR COURTESY SWITCH CONTINUITY

BACK DOOR COURTESY SWITCH TERMINALS CONTINUITY

Switch position	Tester connection	Specified condition
OFF (closed)	-	No continuity
ON (opened)	3-4	Continuity

If continuity is not as specified, replace the switch.

Fig 17: Back Door Courtesy Switch Continuity

INSPECT LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CIRCUIT (See LUGGAGE COURTESY SWITCH CIRCUIT )

Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown in Fig 18 .

Fig 18: Inspecting Luggage Compartment Door Courtesy Switch Circuit

LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CONNECTOR TERMINALS CONTINUITY

Tester connection	Condition	Specified condition
2 - Body ground	Luggage compartment door courtesy switch ON (door opened)	Continuity

If circuit is not as specified, inspect power source or wire harness.

INSPECT LICENSE PLATE LIGHT CONTINUITY
Using an ohmmeter, check that continuity exists between terminals.

If continuity is not as specified, replace the light assembly or bulb.

Fig 19: Inspecting License Plate Light Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT LICENSE PLATE LIGHT CIRCUIT

Disconnect the connector from the light and inspect the connector on the wire harness side, as shown in Fig 20 .

Fig 20: Inspecting License Plate Light Circuit

LICENSE PLATE LIGHT CONNECTOR TERMINALS SPECIFIED CONDITION

Tester connection	Condition	Specified condition
1 - Ground	Always	Continuity
2 - Ground	Light control switch TAIL or HEAD	Battery Positive Voltage

If circuit is not as specified, inspect power source or wire harness.