Dtc B15D3 Stereo Component Amplifier Disconnected

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

CHECK FOR DTC

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

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY

DESCRIPTION

HINT:

1. Even if no fault is present, this DTC may be stored depending on the battery condition.
   
2. The navigation receiver assembly is the master unit.
   

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

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

HINT:

When replacing the navigation receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services (w/ Connected Services Function).

1. If DTC B15C3 is output, perform the troubleshooting of DTC B15C3 first.
   

   Result

   Result	Proceed to
   DTC B15C3 is not output.	A
   DTC B15C3 is output.	B

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

   Result

   Result	Proceed to
   Optional components (including associated wiring) are installed.	A
   Optional components (including associated wiring) are not installed.	B

   HINT:

   1. Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.
      
   2. This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.
      

1. Remove optional components (including associated wiring).
   

   NOTICE:

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

1. Clear the DTCs (LandCruiser RM0000011BU0W7X.html).
   

2. Recheck for DTCs and check if the same DTC is output again (LandCruiser RM0000011BU0W7X.html).
   

   OK:

   No DTCs are output.
   

1. Disconnect the stereo component amplifier assembly connectors.
   

   
   
   
   
   

   Text in Illustration

   *A	for JBL Made	*B	except JBL Made
   *a	Front view of wire harness connector (to Stereo Component Amplifier Assembly)	-	-

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

   Standard Resistance:

   for JBL Made

   Tester Connection	Condition	Specified Condition
   H64-2 (GND) - Body ground	Always	Below 1 Ω
   H64-6 (GND2) - Body ground	Always	Below 1 Ω

   except JBL Made

   Tester Connection	Condition	Specified Condition
   H67-3 (GND) - Body ground	Always	Below 1 Ω
   H67-18 (GND2) - Body ground	Always	Below 1 Ω

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

   Standard Voltage:

   for JBL Made

   Tester Connection	Condition	Specified Condition
   H64-1 (+B) - H64-2 (GND)	Always	11 to 14 V
   H64-3 (+B2) - H64-2 (GND)	Always	11 to 14 V
   H63-12 (ACC) - H64-2 (GND)	Engine switch on (ACC)	11 to 14 V

   except JBL Made

   Tester Connection	Condition	Specified Condition
   H67-1 (+B) - H67-3 (GND)	Always	11 to 14 V
   H67-16 (+B2) - H67-3 (GND)	Always	11 to 14 V
   H63-12 (ACC) - H67-3 (GND)	Engine switch on (ACC)	11 to 14 V

1. Disconnect the H56 navigation receiver assembly connector.
   

2. Disconnect the H63 stereo component amplifier assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   H56-7 (TX1+) - H63-8 (TX+)	Always	Below 1 Ω
   H56-8 (TX1-) - H63-7 (TX-)	Always	Below 1 Ω
   H56-7 (TX1+) - Body ground	Always	10 kΩ or higher
   H56-8 (TX1-) - Body ground	Always	10 kΩ or higher

1. Replace the stereo component amplifier assembly with a known good one (LandCruiser RM000003AI9027X.html).
   

2. Clear the DTCs (LandCruiser RM0000011BU0W7X.html).
   

3. Recheck for DTCs and check if the same DTC is output again.
   

   OK:

   No DTCs are output.