DTC B1532: LVDS Signal Malfunction (from Extension Module) [10/2014 - ]: Procedure

1. Disconnect the a2 stereo component tuner assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   a2-8 (GND2) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   a2-4 (+B2) - a2-8 (GND2)	Power switch off	11 to 14 V
   a2-3 (ACC2) - a2-8 (GND2)	Power switch on (ACC)	11 to 14 V

Result: 

NG 

See step  4

Result: 

OK 

See step  2

1. Replace the navigation wire with a new or known good one (Refer to REMOVAL [10/2014 - ] ).
2. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
3. Recheck for DTCs and check that no DTCs are output.

   OK

   No DTCs are output.

Result: 

OK 

END 

Result: 

NG 

See step  3

1. Replace the stereo component tuner assembly with a new or known good one (Refer to REMOVAL [10/2014 - ] ).
2. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
3. Recheck for DTCs and check that no DTCs are output.

   OK

   No DTCs are output.

Result: 

OK 

END 

Result: 

NG 

REPLACE NAVIGATION ECU SUB-ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

1. Disconnect the a1 navigation ECU sub-assembly connector.
2. Disconnect the a2 stereo component tuner assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   a1-4 (+B2) - a2-4 (+B2)	Always	Below 1 Ω
   a1-3 (ACC2) - a2-3 (ACC2)	Always	Below 1 Ω
   a1-8 (GND2) - a2-8 (GND2)	Always	Below 1 Ω
   a1-4 (+B2) - Body ground	Always	10 kΩ or higher
   a1-3 (ACC2) - Body ground	Always	10 kΩ or higher
   a1-8 (GND2) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE NAVIGATION ECU SUB-ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPLACE NAVIGATION WIRE NO. 1 

(Refer to REMOVAL [10/2014 - ] )