Electro Multi Vision System

AUDIO / VISUAL: ELECTRO MULTI VISION SYSTEM: B1593, B15D3: No Response from Stereo Component Amplifier
B1593 - No Response from Stereo Component Amplifier
B15D3 - Stereo Component Amplifier Disconnectedn

DESCRIPTION

The display and navigation module display and stereo component amplifier assembly are connected by the MOST communication line.

When a MOST communication error occurs between the display and navigation module display and stereo component amplifier assembly, these DTCs will be stored.





* *1: w/o Rear Seat Entertainment System

* *2: w/ Rear Seat Entertainment System

HINT
For the MOST network, the display and navigation module display is the master unit.

WIRING DIAGRAM





INSPECTION PROCEDURE

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

PROCEDURE

1. CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

(a) Check that optional components (including associated wiring) which generate radio waves are not installed.

Result





HINT
* Electrical noise from radio waves generated by optional components or the wiring for those components may affect MOST communication.
* This DTC may be stored when a MOST communication error occurs due to electrical noise.

B -- CHECK FOR DTC
A -- Continue to next step.

2. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

(a) Remove optional components (including associated wiring).

NOTICE:
Do not remove optional components or associated wiring without the permission of the customer.

NEXT -- Continue to next step.

3. CHECK FOR DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTCs and check if the same trouble occurs again.

OK:

No DTCs are output.

NG -- CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - BATTERY AND BODY GROUND)

OK -- END

4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - BATTERY AND BODY GROUND)

(a) Disconnect the R38 stereo component amplifier assembly connector.





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

Standard Resistance:





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

Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - RADIO RECEIVER)

(a) Disconnect the R60 stereo component amplifier assembly connector.

(b) Disconnect the L113 radio receiver assembly connector.

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

Standard Resistance:





Result





B -- CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - TELEVISION DISPLAY)

C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - STEREO COMPONENT AMPLIFIER)

(a) Disconnect the L115 display and navigation module display connector.

(b) Disconnect the R60 stereo component amplifier assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. REPLACE STEREO COMPONENT AMPLIFIER

(a) Temporarily replace the stereo component amplifier assembly with a new or normally functioning Electronic Circuit Inspection Procedure.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Recheck for DTCs and check if the same trouble occurs again.

OK:

No DTCs are output.

NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal

OK -- END

8. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - TELEVISION DISPLAY)

(a) Disconnect the R60 stereo component amplifier assembly connector.

(b) Disconnect the R59*1 or R62*2 television display assembly connector.

*1: for 4-Passenger with Ottoman

*2: except 4-Passenger with Ottoman

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

Standard Resistance:

for 4-Passenger with Ottoman
except 4-Passenger with Ottoman










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

9. REPLACE STEREO COMPONENT AMPLIFIER

(a) Temporarily replace the stereo component amplifier assembly with a new or normally functioning Electronic Circuit Inspection Procedure.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Check for DTCs and check if the same trouble occurs again.

OK:

No DTCs are output.

NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal

OK -- END