DESCRIPTION
The stereo component tuner assembly and the radio and display receiver assembly are connected by an LVDS communication line.
This DTC is stored when an LVDS communication error occurs between the stereo component tuner assembly and the radio and display receiver assembly.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1532 |
When any of the following conditions is met:
|
|
HINT:
Even if no malfunction is present, this DTC may be stored depending on the battery condition or engine start voltage.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary.
PROCEDURE
1. |
CHECK NO. 1 NAVIGATION WIRE (STEREO COMPONENT TUNER ASSEMBLY POWER SOURCE) |
(a) Disconnect the stereo component tuner assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
S52-8 (GND2) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
S52-4 (+B2) - S52-8 (GND2) |
Always |
11 to 14 V |
S52-3 (ACC2) - S52-8 (GND2) |
Ignition switch ACC |
11 to 14 V |
*a |
Front view of wire harness connector (to Stereo Component Tuner Assembly) |
NG |
GO TO STEP 4 |
|
2. |
REPLACE NO. 1 NAVIGATION WIRE |
(a) Replace the No. 1 navigation wire with a new or known good one (See page ).
(b) Clear the DTCs (See page ).
(c) Recheck for DTCs and check that no DTCs are output.
OK:
No DTCs are output.
OK |
END |
|
3. |
REPLACE STEREO COMPONENT TUNER ASSEMBLY |
(a) Replace the stereo component tuner assembly with a new or known good one (See page ).
(b) Clear the DTCs (See page ).
(c) Recheck for DTCs and check that no DTCs are output.
OK:
No DTCs are output.
OK |
END |
NG |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
4. |
CHECK NO. 1 NAVIGATION WIRE |
(a) Disconnect the R27 radio and display receiver assembly connector.
(b) Disconnect the S52 stereo component tuner assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
R27-4 (+B2) - S52-4 (+B2) |
Always |
Below 1 Ω |
R27-3 (ACC2) - S52-3 (ACC2) |
Always |
Below 1 Ω |
R27-8 (GND2) - S52-8 (GND2) |
Always |
Below 1 Ω |
R27-4 (+B2) - Body ground |
Always |
10 kΩ or higher |
R27-3 (ACC2) - Body ground |
Always |
10 kΩ or higher |
R27-8 (GND2) - Body ground |
Always |
10 kΩ or higher |
OK |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
NG |
REPLACE NO. 1 NAVIGATION WIRE |
Confirm Cellular Phone Functionality
PROCEDURE
1.
CHECK CUSTOMER'S CELLULAR PHONE COMPATIBILITY
(a) Check if the cellular phone is compatible (Refer to http://www.toyota.com/entune/).
Result
Result
Proceed to
Cellular phone is compatible
A
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Perform the following procedure to troubleshoot the dynamic radar cruise
control system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION
The airbag sensor assembly has a built-in yaw rate and acceleration sensor.
The skid control ECU (brake actuator assembly) receives signals from the yaw
rate and acceleration sensor (airbag sensor assembly) via the CAN communication
system.
DTC No.
Detection ...