Toyota 4Runner: Inside Handle Illumination Light Circuit

Toyota 4Runner Service Manual / Vehicle Interior / Lighting (int) / Lighting System / Inside Handle Illumination Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the inside handle illumination.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.	CHECK DOOR INSIDE HANDLE ILLUMINATION

(a) Check the each door inside handle illumination.

Result

Result	Proceed to
Front door inside handle illumination does not come on.	A
Rear door inside handle illumination does not come on.	B

GO TO STEP 5

2.	INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY (FRONT DOOR INSIDE HANDLE ILLUMINATION) (LH OR RH)

(a) Remove the No. 1 interior illumination light assembly (front door inside handle illumination) (See page ).

(b) Connect a positive (+) lead from the battery to terminal 1 and a negative (-) lead to terminal 2.

Text in Illustration

*a	Component without harness connected (No. 1 Interior Illumination Light Assembly (Front Door Inside Handle Illumination))

OK:

No. 1 interior illumination light assembly (front door inside handle illumination) comes on

REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY (FRONT DOOR INSIDE HANDLE ILLUMINATION)

3.	CHECK HARNESS AND CONNECTOR (BATTERY - NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY)

(a) Disconnect the h2*1 or g3*2 No. 1 interior illumination light assembly (front door inside handle illumination) connector.

(b) Measure the voltage according to the value(s) in the table below.

*1: for LH
*2: for RH

Standard Voltage:

for LH

Tester Connection	Condition	Specified Condition
h2-2 - Body ground	Always	11 to 14 V

for RH

Tester Connection	Condition	Specified Condition
g3-2 - Body ground	Always	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (NO. 1 INTERIOR ILLUMINATION - DRIVER SIDE JUNCTION BLOCK)

(a) Disconnect the h2*1 or g3*2 No. 1 interior illumination light assembly (front door inside handle illumination) connector.

(b) Disconnect the 2B driver side junction block assembly connector.

*1: for LH
*2: for RH

Standard Resistance (Check for Open):

for LH

Tester Connection	Condition	Specified Condition
h2-1 - 2B-36	Always	Below 1 Ω

for RH

Tester Connection	Condition	Specified Condition
g3-1 - 2B-36	Always	Below 1 Ω

Standard Resistance (Check for Short):

for LH

Tester Connection	Condition	Specified Condition
h2-1 or 2B-36 - Body ground	Always	10 kΩ or higher

for RH

Tester Connection	Condition	Specified Condition
g3-1 or 2B-36 - Body ground	Always	10 kΩ or higher

Result

Result	Proceed to
NG	A
OK	B

REPAIR OR REPLACE HARNESS OR CONNECTOR

GO TO STEP 8

5.	INSPECT NO. 2 INTERIOR ILLUMINATION LIGHT ASSEMBLY (REAR DOOR INSIDE HANDLE ILLUMINATION) (LH OR RH)

(a) Remove the No. 2 interior illumination light assembly (rear door inside handle illumination) (See page ).

(b) Connect a positive (+) lead from the battery to terminal 1 and a negative (-) lead to terminal 2.

Text in Illustration

*a	Component without harness connected (No. 2 Interior Illumination Light Assembly (Rear Door Inside Handle Illumination))

OK:

No. 2 interior illumination light assembly (rear door inside handle illumination) comes on

REPLACE NO. 2 INTERIOR ILLUMINATION LIGHT ASSEMBLY (REAR DOOR INSIDE HANDLE ILLUMINATION)

6.	CHECK HARNESS AND CONNECTOR (BATTERY - NO. 2 INTERIOR ILLUMINATION LIGHT ASSEMBLY)

(a) Disconnect the j2*1 or i2*2 No. 2 interior illumination light (rear door inside handle illumination) connector.

(b) Measure the voltage according to the value(s) in the table below.

*1: for LH
*2: for RH

Standard Voltage:

for LH

Tester Connection	Condition	Specified Condition
j2-2 - Body ground	Always	11 to 14 V

for RH

Tester Connection	Condition	Specified Condition
i2-2 - Body ground	Always	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK HARNESS AND CONNECTOR (NO. 2 INTERIOR ILLUMINATION - DRIVER SIDE JUNCTION BLOCK)

(a) Disconnect the j2*1 or i2*2 No. 2 interior illumination light (rear door inside handle illumination) connector.

(b) Disconnect the 2B driver side junction block assembly connector.

*1: for LH
*2: for RH

Standard Resistance (Check for Open):

for LH

Tester Connection	Condition	Specified Condition
j2-1 - 2B-36	Always	Below 1 Ω

for RH

Tester Connection	Condition	Specified Condition
i2-1 - 2B-36	Always	Below 1 Ω

Standard Resistance (Check for Short):

for LH

Tester Connection	Condition	Specified Condition
j2-1 or 2B-36 - Body ground	Always	10 kΩ or higher

for RH

Tester Connection	Condition	Specified Condition
i2-1 or 2B-36 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY

(a) Remove the driver side junction block assembly (See page ).

Text in Illustration

Component without harness connected

(Driver Side Junction Block Assembly)

(b) Remove the main body ECU (multiplex network body ECU) from driver side junction block assembly.

Standard Resistance:

Tester Connection	Condition	Specified Condition
2B-36 - A-26 (FSPT)	Always	Below 1 Ω

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY

Interior Light Auto Cut Circuit

DESCRIPTION The main body ECU (multiplex network body ECU) controls operation of the DOME relay in order to supply power to the interior lights. When battery saving control operates while the int ...

Luggage Room Light Circuit

DESCRIPTION The multiplex network door ECU controls the spot light. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses and bulbs for circuits related to this system before perform ...

Other materials about Toyota 4Runner:

Reverse Signal Circuit
DESCRIPTION The navigation receiver assembly receives a reverse signal from the park/neutral position switch assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: After replacing the navigation receiver assembly of vehicles subscribed t ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE STEERING LOCK ACTUATOR ASSEMBLY (a) Using a center punch, mark the center of the tapered-head bolt. (b) Using a 3 to 4 mm (0.118 to 0.157 in.) drill, drill a hole in the 2 bolts. (c) Using a screw extractor, remo ...