B1593

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION 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 the 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 the stereo component amplifier assembly, these DTCs are stored.

B1593 - B15D3:

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 for optional components.

(1) 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 the optional components (including associated wiring).

NOTICE:
Do not remove the 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 R32*1 or H6*2 stereo component amplifier assembly connector.

*1: for DVD Changer Models

*2: for CD Changer Models

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

Standard Resistance:

for DVD Changer Models

for CD Changer Models

Text in Illustration

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

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

(a) Disconnect the H2 display and navigation module display connector.

(b) Disconnect the R34*1 or H10*2 stereo component amplifier assembly connector.

*1: for DVD Changer Models

*2: for CD Changer Models

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

Standard Resistance:

for DVD Changer Models

for CD Changer Models

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

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

(a) Disconnect the R34*1 or H10*2 stereo component amplifier assembly connector.

*1: for DVD Changer Models

*2: for CD Changer Models

(b) Disconnect the H1 radio receiver assembly connector.

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

Standard Resistance:

for DVD Changer Models

for CD Changer Models

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

7. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY

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

(b) Replace the stereo component amplifier assembly Removal.

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

(d) 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