Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Open in Turn Signal Circuit (B1507)

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Open in Turn Signal Circuit (B1507)

DESCRIPTION

These DTCs are stored when the combination meter assembly detects an open in a turn signal light circuit, or a short in a turn signal light circuit or the hazard warning light circuit.

HINT:

  • If there is an open in a front turn signal light circuit or rear turn signal light circuit, the turn signal lights on the side with the open circuit will blink faster than usual.
  • If there is an open in a side turn signal light circuit, DTC B1507 will not be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

B1507

Open in Turn Signal Circuit

Diagnosis Condition:

  • Battery voltage is 10 V or more

Malfunction Status:

  • Open in front turn signal light circuit
  • Open in rear turn signal light circuit
  • Harness or connector
  • Combination meter assembly
for TMK Made
  • No. 1 headlight ECU sub-assembly*1
  • Headlight unit
  • Front turn signal light socket*2
  • Front turn signal light bulb*2
  • Rear light cord*2
  • Rear turn signal light bulb*2
  • Rear light assembly*3
  • Rear light socket and wire*3
for TMMC Made
  • Headlight assembly
  • Front turn signal light socket*2
  • Front turn signal light bulb*2
  • Rear combination light assembly
  • Rear light cord*2
  • Rear turn signal light bulb*2
  • Rear light assembly*3
  • Rear light socket and wire*3

DTC stored

-
  • *1: w/ Automatic Headlight Beam Level Control System
  • *2: for Bulb Type Turn Signal Light
  • *3: for LED Type Turn Signal Light

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • When replacing the No. 1 headlight ECU sub-assembly LH, always replace it with a new one. If a No. 1 headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • Inspect the LEDs and bulbs for this system before performing the following procedure.

PROCEDURE

1.

CHECK SYMPTOMS

(a) Check the problem symptoms.

Result

Proceed to

LH side front turn signal light does not blink

A

LH side rear turn signal light (rear combination light assembly side) does not blink

B

LH side rear turn signal light (rear light assembly side) does not blink

C

LH side rear turn signal light (rear combination light assembly and rear light assembly) does not blink

D

RH side front turn signal light does not blink

E

RH side rear turn signal light (rear combination light assembly) does not blink

F

LH side rear turn signal light (rear light assembly) does not blink

G

LH side rear turn signal light (rear combination light assembly and rear light assembly) does not blink

H
B

GO TO STEP 13

C

GO TO STEP 15

D

GO TO STEP 18

E

GO TO STEP 19

F

GO TO STEP 30

G

GO TO STEP 32

H

GO TO STEP 35

A

2.

CONFIRM MODEL

Result

Proceed to

w/o Automatic Headlight Beam Level Control System

A

w/ Automatic Headlight Beam Level Control System

(for Bulb Type Front Turn Signal Light (for TMK Made))

B

w/ Automatic Headlight Beam Level Control System

(for Bulb Type Front Turn Signal Light (for TMMC Made))

C

w/ Automatic Headlight Beam Level Control System

(for LED Type Front Turn Signal Light (for TMK Made))

D

w/ Automatic Headlight Beam Level Control System

(for LED Type Front Turn Signal Light (for TMMC Made))

E
A

GO TO STEP 7

C

GO TO STEP 5

D

GO TO STEP 8

E

GO TO STEP 10

B

3.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly LH)

-

-

(a) Remove the No. 1 headlight ECU sub-assembly LH.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A49-11 (TNS) - B-9 (TURN+)

Always

Below 1 Ω

A49-12 (GND) - B-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH

OK

4.

CHECK LH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT LH)

(a) Remove the front turn signal light socket LH.

Click here

(b) Interchange the headlight unit LH with RH and connect the connectors.

Click here

(c) Connect the front turn signal light socket LH connectors.

(d) Connect the No. 1 headlight ECU sub-assembly LH connectors.

(e) Operate the turn signal switch and check that the LH side front turn signal light operates normally.

HINT:

If the LH side front turn signal light operates normally, the headlight unit LH is malfunctioning.

Result

Proceed to

LH side front turn signal light operates normally

A

Problem symptoms do not change

(LH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT UNIT LH

B

GO TO STEP 7

5.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY (HEADLAMP ASSEMBLY LH)

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly (Headlight Assembly LH))

-

-

(a) Remove the No. 1 headlight ECU sub-assembly (headlight assembly LH).

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A49-11 (TNS) - B-9 (TURN+)

Always

Below 1 Ω

A49-12 (GND) - B-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE HEADLIGHT ASSEMBLY LH

OK

6.

CHECK LH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT (HEADLIGHT ASSEMBLY LH))

(a) Remove the front turn signal light socket LH.

Click here

(b) Interchange the headlight unit (headlight assembly LH with RH) and connect the connectors.

Click here

(c) Connect the front turn signal light socket LH connectors.

(d) Connect the No. 1 headlight ECU sub-assembly (headlight assembly LH) connectors.

(e) Operate the turn signal switch and check that the LH side front turn signal light operates normally.

HINT:

If the LH side front turn signal light operates normally, the headlight unit (headlight assembly LH) is malfunctioning.

Result

Proceed to

LH side front turn signal light operates normally

A

Problem symptoms do not change

(LH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT ASSEMBLY LH

B

7.

CHECK LH SIDE FRONT TURN SIGNAL LIGHT (Front Turn Signal Light Socket LH)

(a) Interchange the front turn signal light socket LH with RH and connect the connectors.

Click here

(b) Operate the turn signal switch and check that the LH side front turn signal light operates normally.

HINT:

If the LH side front turn signal light operates normally, the front turn signal light socket LH is malfunctioning.

Result

Proceed to

LH side front turn signal light operates normally

A

Problem symptoms do not change

(LH side front turn signal light does not blink)

B
A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET LH

B

GO TO STEP 12

8.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly LH)

-

-

(a) Remove the No. 1 headlight ECU sub-assembly LH.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A49-11 (TNS) - B-20 (TURN+)

Always

Below 1 Ω

A49-12 (GND) - B-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH

OK

9.

CHECK LH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT LH)

(a) Interchange the headlight unit LH with RH and connect the connectors.

Click here

(b) Connect the No. 1 headlight ECU sub-assembly LH connectors.

(c) Operate the turn signal switch and check that the LH side front turn signal light operates normally.

HINT:

If the LH side front turn signal light operates normally, the headlight unit LH is malfunctioning.

Result

Proceed to

LH side front turn signal light operates normally

A

Problem symptoms do not change

(LH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT UNIT LH

B

GO TO STEP 12

10.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY (HEADLIGHT ASSEMBLY LH)

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly (Headlight Assembly LH))

-

-

(a) Remove the No. 1 headlight ECU sub-assembly (headlight assembly LH).

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A49-11 (TNS) - B-20 (TURN+)

Always

Below 1 Ω

A49-12 (GND) - B-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE HEADLIGHT ASSEMBLY LH

OK

11.

CHECK LH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT (HEADLIGHT ASSEMBLY LH))

(a) Interchange the headlight unit (headlight assembly LH with RH) and connect the connectors.

Click here

(b) Connect the No. 1 headlight ECU sub-assembly (headlight assembly LH) connectors.

(c) Operate the turn signal switch and check that the LH side front turn signal light operates normally.

HINT:

If the LH side front turn signal light operates normally, the headlight unit (headlight assembly LH) is malfunctioning.

Result

Proceed to

LH side front turn signal light operates normally

A

Problem symptoms do not change

(LH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT ASSEMBLY LH

B

12.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the A21*1 or A49*2 headlight assembly LH connector.

(b) Disconnect the J11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A21-11(TNS)*1 or A49-11 (TNS)*2 - J11-13 (LL)

Always

Below 1 Ω

A21-2 (E) - Body ground*1

Always

Below 1 Ω

A49-12 (GND) - Body ground

Always

Below 1 Ω
  • *1: w/o Automatic Headlight Beam Level Control System
  • *2: w/ Automatic Headlight Beam Level Control System
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.

INSPECT REAR COMBINATION LIGHT ASSEMBLY LH

(a) Remove the rear combination light assembly LH.

w/ Rear No. 2 Seat: Click here

w/o Rear No. 2 Seat: Click here

(b) Inspect the turn signal light in the rear combination light assembly LH.

w/ Rear No. 2 Seat: Click here

w/o Rear No. 2 Seat: Click here

Result

Proceed to

OK

A

NG

(for Bulb Type Rear Turn Signal Light)

B

NG

(for LED Type Rear Turn Signal Light)

C
B

REPLACE REAR LIGHT CORD LH

C

REPLACE REAR COMBINATION LIGHT ASSEMBLY LH

A

14.

CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the S31 rear combination light assembly LH connector.

(b) Disconnect the J11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

S31-4 (TRN) - J11-11 (TRNL)

Always

Below 1 Ω

S31-3 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.

INSPECT REAR LGHT ASSEMBLY LH

(a) Remove the rear light assembly LH.

Click here

(b) Inspect the turn signal light in the rear light assembly LH.

Click here

NG

GO TO STEP 17

OK

16.

CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the Z21 rear light assembly LH connector.

(b) Disconnect the J11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

Z21-6 (B) - J11-11 (TRNL)

Always

Below 1 Ω

Z21-1 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.

CHECK LH SIDE REAR TURN SIGNAL LIGHT (REAR LIGHT SOCKET AND WIRE LH)

(a) Interchange the rear light socket and wire LH with RH and connect the connectors.

Click here

(b) Operate the turn signal switch and check that the LH side rear turn signal light operates normally.

HINT:

If the LH side rear turn signal light operates normally, the rear light socket and wire LH is malfunctioning.

Result

Proceed to

LH side rear turn signal light operates normally

A

Problem symptoms do not change

(LH side rear turn signal light does not blink)

B
A

REPLACE REAR LIGHT SOCKET AND WIRE LH

B

REPLACE REAR LIGHT ASSEMBLY LH

18.

CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH AND REAR LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the S31 rear combination light assembly LH connector.

(b) Disconnect the Z21 rear light assembly LH connector.

(c) Disconnect the J11 combination meter assembly connector.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

S31-4 (TRN) - J11-11 (TRNL)

Always

Below 1 Ω

Z21-6 (B) - J11-11 (TRNL)

Always

Below 1 Ω

S31-3 (E) - Body ground

Always

Below 1 Ω

Z21-1 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

19.

CONFIRM MODEL

Result

Proceed to

w/o Automatic Headlight Beam Level Control System

A

w/ Automatic Headlight Beam Level Control System

(for Bulb Type Front Turn Signal Light (for TMK Made))

B

w/ Automatic Headlight Beam Level Control System

(for Bulb Type Front Turn Signal Light (for TMMC Made))

C

w/ Automatic Headlight Beam Level Control System

(for LED Type Front Turn Signal Light (for TMK Made))

D

w/ Automatic Headlight Beam Level Control System

(for LED Type Front Turn Signal Light (for TMMC Made))

E
A

GO TO STEP 24

C

GO TO STEP 22

D

GO TO STEP 25

E

GO TO STEP 27

B

20.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly RH)

-

-

(a) Remove the No. 1 headlight ECU sub-assembly RH.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A50-11 (TNS) - D-9 (TURN+)

Always

Below 1 Ω

A50-12 (GND) - D-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE NO. 1 HEADLAMP ECU SUB-ASSEMBLY RH

OK

21.

CHECK RH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT RH)

(a) Remove the front turn signal light socket RH.

Click here

(b) Interchange the headlight unit RH with LH and connect the connectors.

Click here

(c) Connect the front turn signal light socket RH connectors.

(d) Connect the No. 1 headlight ECU sub-assembly RH connectors.

(e) Operate the turn signal switch and check that the RH side front turn signal light operates normally.

HINT:

If the RH side front turn signal light operates normally, the headlight unit RH is malfunctioning.

Result

Proceed to

RH side front turn signal light operates normally

A

Problem symptoms do not change

(RH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT UNIT RH

B

GO TO STEP 24

22.

INSPECT HEADLAMP ECU SUB-ASSEMBLY (HEADLIGHTASSEMBLY RH)

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly (Headlight Assembly RH))

-

-

(a) Remove the No. 1 headlight ECU sub-assembly (headlight assembly RH).

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A50-11 (TNS) - D-9 (TURN+)

Always

Below 1 Ω

A50-12 (GND) - D-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE HEADLIGHT ASSEMBLY RH

OK

23.

CHECK RH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT (HEADLIGHT ASSEMBLY RH))

(a) Remove the front turn signal light socket RH.

Click here

(b) Interchange the headlight unit (headlight assembly RH with LH) and connect the connectors.

Click here

(c) Connect the front turn signal light socket RH connectors.

(d) Connect the No. 1 headlight ECU sub-assembly (headlight assembly RH) connectors.

(e) Operate the turn signal switch and check that the RH side front turn signal light operates normally.

HINT:

If the RH side front turn signal light operates normally, the headlight unit (headlight assembly RH) is malfunctioning.

Result

Proceed to

RH side front turn signal light operates normally

A

Problem symptoms do not change

(RH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT ASSEMBLY RH

B

24.

CHECK RH SIDE FRONT TURN SIGNAL LIGHT (Front Turn Signal Light Socket RH)

(a) Interchange the front turn signal light socket RH with LH and connect the connectors.

Click here

(b) Operate the turn signal switch and check that the RH side front turn signal light operates normally.

HINT:

If the RH side front turn signal light operates normally, the front turn signal light socket RH is malfunctioning.

Result

Proceed to

RH side front turn signal light operates normally

A

Problem symptoms do not change

(RH side front turn signal light does not blink)

B
A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET RH

B

GO TO STEP 29

25.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly RH)

-

-

(a) Remove the No. 1 headlight ECU sub-assembly RH.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A50-11 (TNS) - E-20 (TURN+)

Always

Below 1 Ω

A50-12 (GND) - E-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH

OK

26.

CHECK RH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT RH)

(a) Interchange the headlight unit RH with LH and connect the connectors.

Click here

(b) Connect the No. 1 headlight ECU sub-assembly RH connectors.

(c) Operate the turn signal switch and check that the RH side front turn signal light operates normally.

HINT:

If the RH side front turn signal light operates normally, the headlight unit RH is malfunctioning.

Result

Proceed to

RH side front turn signal light operates normally

A

Problem symptoms do not change

(RH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT UNIT RH

B

GO TO STEP 29

27.

INSPECT NO. 1 HEADLIGHT ECU SUB-ASSEMBLY (HEADLIGHT ASSEMBLY RH)

*a

Component without harness connected

(No. 1 Headlight ECU Sub-assembly (Headlight Assembly RH))

-

-

(a) Remove the No. 1 headlight ECU sub-assembly (headlight assembly RH).

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A50-11 (TNS) - E-20 (TURN+)

Always

Below 1 Ω

A50-12 (GND) - E-13 (TURN-)

Always

Below 1 Ω
NG

REPLACE HEADLIGHT ASSEMBLY RH

OK

28.

CHECK RH SIDE FRONT TURN SIGNAL LIGHT (HEADLIGHT UNIT (HEADLIGHT ASSEMBLY RH))

(a) Interchange the headlight unit (headlight assembly RH with LH) and connect the connectors.

Click here

(b) Connect the No. 1 headlight ECU sub-assembly (headlight assembly RH) connectors.

(c) Operate the turn signal switch and check that the RH side front turn signal light operates normally.

HINT:

If the RH side front turn signal light operates normally, the headlight unit (headlight assembly RH) is malfunctioning.

Result

Proceed to

RH side front turn signal light operates normally

A

Problem symptoms do not change

(RH side front turn signal light does not blink)

B
A

REPLACE HEADLIGHT ASSEMBLY RH

B

29.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the A25*1 or A50*2 headlight assembly RH connector.

(b) Disconnect the J11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A25-11 (TNS)*1 or A50-11 (TNS)*2 - J11-7 (LR)

Always

Below 1 Ω

A25-2 (E) - Body ground*2

Always

Below 1 Ω

A50-12 (GND) - Body ground

Always

Below 1 Ω
  • *1: w/o Automatic Headlight Beam Level Control System
  • *2: w/ Automatic Headlight Beam Level Control System
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

30.

INSPECT REAR COMBINATION LIGHT ASSEMBLY RH

(a) Remove the rear combination light assembly RH.

w/ Rear No. 2 Seat: Click here

w/o Rear No. 2 Seat: Click here

(b) Inspect the turn signal light in the rear combination light assembly RH.

w/ Rear No. 2 Seat: Click here

w/o Rear No. 2 Seat: Click here

Result

Proceed to

OK

A

NG

(for Bulb Type Rear Turn Signal Light)

B

NG

(for LED Type Rear Turn Signal Light)

C
B

REPLACE REAR LIGHT CORD RH

C

REPLACE REAR COMBINATION LLIGHT ASSEMBLY RH

A

31.

CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the S33 rear combination light assembly RH connector.

(b) Disconnect the J11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

S33-4 (TRN) - J11-5 (TRNR)

Always

Below 1 Ω

S33-3 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

32.

INSPECT REAR LIGHT ASSEMBLY RH

(a) Remove the rear light assembly RH.

Click here

(b) Inspect the turn signal light in the rear light assembly RH.

Click here

NG

GO TO STEP 34

OK

33.

CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the Z20 rear light assembly RH connector.

(b) Disconnect the J11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

Z20-6 (B) - J11-5 (TRNR)

Always

Below 1 Ω

Z20-1 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

34.

CHECK RH SIDE REAR TURN SIGNAL LIGHT (REAR LIGHT SOCKET AND WIRE RH)

(a) Interchange the rear light socket and wire RH with LH and connect the connectors.

Click here

(b) Operate the turn signal switch and check that the RH side rear turn signal light operates normally.

HINT:

If the RH side rear turn signal light operates normally, the rear light socket and wire RH is malfunctioning.

Result

Proceed to

RH side rear turn signal light operates normally

A

Problem symptoms do not change

(RH side rear turn signal light does not blink)

B
A

REPLACE REAR LIGHT SOCKET AND WIRE RH

B

REPLACE REAR LIGHT ASSEMBLY RH

35.

CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH AND REAR LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the S33 rear combination light assembly RH connector.

(b) Disconnect the Z20 rear light assembly RH connector.

(c) Disconnect the J11 combination meter assembly connector.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

S33-4 (TRN) - J11-5 (TRNR)

Always

Below 1 Ω

Z20-6 (B) - J11-5 (TRNR)

Always

Below 1 Ω

S33-3 (E) - Body ground

Always

Below 1 Ω

Z20-1 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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