AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 Sequoia)

Last Modified: 11-29-2007		1.6 C
Service Category: Audio/Visual/Telematics	Section: Audio/Video
Model Year: 2008	Model: Sequoia	Doc ID: RM00000183U023X
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 Sequoia)

DTC

01-D6

No Master

DTC

01-D7

Connection Check Error

DESCRIPTION

DTC Code	DTC Detection Condition	Trouble Area
01-D6*1	When either of the following conditions is met: The device that stores (stored) the code has (had) been disconnected when the ignition switch is ACC or ON. The master device has (had) been disconnected when this code is stored.	Radio receiver power source circuit Power source circuit of the component which has stored this code AVC-LAN circuit between the radio receiver assembly and the component which has stored this code Component which has stored this code Radio receiver assembly
01-D7*2	When either of the following conditions is met: The device that stored the code has (had) been disconnected after the engine starts (started). The master device has (had) been disconnected when this code is (was) stored.

HINT:

*1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.
*2: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

NOTICE:

Before starting troubleshooting, be sure to clear DTCs to clear codes stored due to the reasons described in Hint above. Then, check for DTCs and troubleshoot according to the output DTCs.
The radio receiver assembly is the master unit.
Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

INSPECTION PROCEDURE

NOTICE:

Be sure to read Description before performing the following procedures.

PROCEDURE

1.	CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

(a) Refer to Radio Receiver Power Source Circuit .

HINT:

If the power source circuit is operating normally, proceed to the next step.

2.	IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

(a) Enter the diagnostic mode.

(b) Press the preset switch "3" to change to "Detailed Information Mode".

Component Table

Component	Physical Address
Stereo component amplifier	440
"Bluetooth" handsfree module	19D
Television display*	1B0

HINT:

*: w/ Rear Seat Entertainment System

"440 (stereo component amplifier)" is the component which has stored this code in the example shown in the illustration.

For details of the DTC display, refer to "DTC Check/Clear" .

3.	CHECK COMPONENT WHICH HAS STORED THIS CODE

(a) Select the component which has stored this code.

HINT:

The "Bluetooth" handsfree module is built into the radio receiver assembly. If there is a problem between the "Bluetooth" handsfree module and radio receiver assembly, replace the radio receiver assembly.

Component Table

Component	Proceed to
Except "Bluetooth" handsfree module	A
"Bluetooth" handsfree module (for Column Shift Type)	B

4.	CHECK POWER SOURCE CIRCUIT OF COMPONENT WHICH HAS STORED THIS CODE

(a) Inspect the power source circuit of the component which has stored this code.

HINT:

If the power source circuit is operating normally, proceed to the next step.

Component Table

Component	Proceed to
Stereo component amplifier	Stereo Component Amplifier Power Source Circuit
Television display*	Television Display Assembly Power Source Circuit

HINT:

*: w/ Rear Seat Entertainment System

5.	INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the I4 and I8* radio receiver assembly connectors.

HINT:

*: w/ Rear Seat Entertainment System

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I4-5 (ATX+) - I4-15 (ATX-)	Always	60 to 80 Ω
I8-9 (TXM+) - I8-10 (TXM-)*	Always	60 to 80 Ω

HINT:

*: w/ Rear Seat Entertainment System

6.	CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

HINT:

For details of the connectors, refer to "Terminals of ECU" .

(a) Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

(1) Disconnect all connectors between the radio receiver assembly and the component which has stored this code.

(2) Check for an open or short in the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

OK:

There is no open or short circuit.

7.	REPLACE COMPONENT WHICH HAS STORED THIS CODE

(a) Replace the component which has stored this code with a normal one and check if the same problem occurs again.

OK:

Same problem does not occur.