Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Lost Communication with Haptic Device (B1323-B1326)

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for 12.3 Inch Display) / Lost Communication with Haptic Device (B1323-B1326)

DESCRIPTION

These DTCs are stored when communication between the radio receiver assembly and remote touch (remote operation controller assembly), combination meter assembly, headup display (meter mirror sub-assembly)* or clock assembly is not possible.

  • *: w/ Headup Display System

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1323

Lost Communication with Haptic Device

CAN reception error
  • Local bus communication line
  • Remote touch (remote operation controller assembly) power source circuit
  • Remote touch (remote operation controller assembly)
  • Radio receiver assembly
  • Harness or connector
  • No. 13 junction connector

B1324

Lost Communication with Meter

CAN reception error
  • Local bus communication line
  • Combination meter assembly power source circuit
  • Combination meter assembly
  • Radio receiver assembly
  • Harness or connector
  • No. 13 junction connector

B1325

Lost Communication with HUD

CAN reception error
  • Local bus communication line
  • Headup display (meter mirror sub-assembly) power source circuit
  • Headup display (meter mirror sub-assembly)
  • Radio receiver assembly
  • Harness or connector
  • No. 13 junction connector

B1326

Lost Communication with Clock Device (Local-CAN)

CAN reception error
  • Local bus communication line
  • Clock assembly power source circuit
  • Clock assembly
  • Radio receiver assembly
  • Harness or connector
  • No. 13 junction connector

HINT:

The radio receiver assembly is the master unit.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

    Click here

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

PROCEDURE

1.

CHECK DTC

(a) Check for DTCs.

Body Electrical > Navigation System > Trouble Codes

Result

Proceed to

DTC B1323, B1324, B1325* and B1326 are not output

A

DTC B1323, B1324, B1325* and B1326 are output

B

DTC B1323 is output

C

DTC B1324 is output

D

DTC B1325 is output

E

DTC B1326 is output

F
A

USE SIMULATION METHOD TO CHECK

C

GO TO STEP 17

D

GO TO STEP 19

E

GO TO STEP 21

F

GO TO STEP 23

B

2.

CHECK LOCAL BUS

(a) Disconnect the cable from the negative (-) battery terminal.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-10 - J161-21

Cable disconnected from negative (-) battery terminal

54 to 69 Ω

Result

Proceed to

OK

A

NG (Below 54 Ω)

B

NG (70 Ω or higher)

C
A

USE SIMULATION METHOD TO CHECK

C

GO TO STEP 13

B

3.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect the J151 radio receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-10 - J161-21

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
NG

GO TO STEP 12

OK

4.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY))

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect the J154 remote touch (remote operation controller assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-11 - J161-22

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
NG

GO TO STEP 11

OK

5.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect 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

J161-8 - J161-19

Cable disconnected from negative (-) battery terminal

200 Ω or higher
NG

GO TO STEP 10

OK

6.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - CLOCK ASSEMBLY)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect the J79 clock assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-9 - J161-20

Cable disconnected from negative (-) battery terminal

200 Ω or higher

Result

Proceed to

OK (w/o Headup Display System)

A

OK (w/ Headup Display System)

B

NG

C
A

REPLACE NO. 13 CAN JUNCTION CONNECTOR
C

GO TO STEP 9

B

7.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY))

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect the K1 headup display (meter mirror sub-assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-7 - J161-18

Cable disconnected from negative (-) battery terminal

200 Ω or higher
OK

REPLACE NO. 13 CAN JUNCTION CONNECTOR
NG

8.

CHECK HARNESS AND CONNECTOR (HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the K1 headup display (meter mirror sub-assembly) connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K1-7 (TX+) - K1-8 (TX-)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
OK

REPLACE HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.

CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J79 clock assembly connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J79-5 (TX+1) - J79-6 (TX-1)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
OK

REPLACE CLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J11 combination meter assembly connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J11-10 (TX+) - J11-9 (TX-)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.

CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J154 remote touch (remote operation controller assembly) connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J154-9 (MO+) - J154-8 (MO-)

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
OK

REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J151 radio receiver assembly connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J151-5 (CNH1) - J151-6 (CNL1)

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
OK

REPLACE RADIO RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect the J151 radio receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-10 - J161-21

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
NG

GO TO STEP 16

OK

14.

CHECK HARNESS AND CONNECTOR (NO. 13 JUNCTION CONNECTOR - REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY))

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J161 No. 13 junction connector.

(c) Connect the J154 remote touch (remote operation controller assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J161-11 - J161-22

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
OK

REPLACE NO. 17 JUNCTION CONNECTOR
NG

15.

CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J154 remote touch (remote operation controller assembly) connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J154-9 (MO+) - J154-8 (MO-)

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
OK

REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J151 radio receiver assembly connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J151-5 (CNH1) - J151-6 (CNL1)

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
OK

REPLACE RADIO RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.

CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) POWER SOURCE)

(a) Disconnect the J154 remote touch (remote operation controller assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J154-10 (GND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

J154-1 (+B) - Body ground

Always

11 to 14 V

J154-6 (ACC) - Body ground

Engine switch on (ACC)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

18.

CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J154 remote touch (remote operation controller assembly) connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J154-9 (MO+) - J154-8 (MO-)

Cable disconnected from negative (-) battery terminal

108 to 132 Ω
OK

REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

19.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY POWER SOURCE)

(a) Disconnect the J11 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J11-31 (ES) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

J11-22 (B) - Body ground

Always

11 to 14 V

J11-21 (IG+) - Body ground

Engine switch on (IG)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

20.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J11 combination meter assembly connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J11-10 (TX+) - J11-9 (TX-)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.

CHECK HARNESS AND CONNECTOR (HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) POWER SOURCE)

(a) Disconnect the K1 headup display (meter mirror sub-assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K1-6 (ES) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

K1-1 (B) - Body ground

Always

11 to 14 V

K1-2 (IG) - Body ground

Engine switch on (IG)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

22.

CHECK HARNESS AND CONNECTOR (HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the K1 headup display (meter mirror sub-assembly) connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K1-7 (TX+) - K1-8 (TX-)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
OK

REPLACE HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

23.

CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY POWER SOURCE)

(a) Disconnect the J79 clock assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J79-7 (E) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

J79-1 (B) - Body ground

Always

11 to 14 V

J79-2 (ACC) - Body ground

Engine switch on (ACC)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

24.

CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the J79 clock assembly connector.

(c) Connect the J161 No. 13 junction connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J79-5 (TX+1) - J79-6 (TX-1)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
OK

REPLACE CLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
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