Inspection Procedure

INSPECT NIGHTTIME ILLUMINATION

Turn on the light switch and check the nighttime illuminations of the vehicle interior.

Result:

RESULT CHART

Result	Proceed to
Only radio receiver nighttime illumination does not activate	A
No nighttime illumination at all	B

A: Go to next step

CHECK DRIVER SIDE JUNCTION BLOCK (PANEL2 VOLTAGE)

Removed the 2E junction block connector.

Fig 1: Identifying 2E Junction Block Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage of the wire harness side connector.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
PANEL2 (2E-5) - Body ground	10 to 14 V

NG: REPLACE DRIVER SIDE JUNCTION BLOCK

OK: Go to next step

CHECK WIRE HARNESS (RADIO RECEIVER - DRIVER SIDE JUNCTION BLOCK AND BODY GROUND)

Disconnect the R3 receiver connector.

Fig 2: Identifying R3 Receiver Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance of the wire harness side connector.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
ILL+ (R3-2) - Body ground	Light control switch OFF	Below 1 V
ILL+ (R3-2) - Body ground	Light control switch TAIL or HEAD	10 to 14 V

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
ILL- (R3-12) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE