DTC B158F: AV Signal Stoppage (Low Battery Voltage) [12/2019 - 10/2022]: Procedure

1. Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to OPERATION CHECK [12/2019 - 10/2022]

2. Measure the auxiliary battery voltage.

   Standard Voltage

   11 to 14 V (w/o Stop and Start System)

   10.5 to 16 V (w/ Stop and Start System)

   HINT: 

   This display is updated once per second.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  3

Result: 

OK 

See step  2

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

2. Recheck for DTCs and check that no DTCs are output.

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

1. Disconnect the H1 radio and display receiver assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H1-4 (+B1) - Body ground*1	Ignition switch off	11 to 14 V
   H1-4 (+B1) - Body ground*2	Always	11 to 14 V*3 10.5 to 16 V*4

   1. *1: for HV Model
   2. *2: for Gasoline Model
   3. *3: w/o Stop and Start System
   4. *4: w/ Stop and Start System

   Result

   Result	Proceed to
   OK	A
   NG (w/o Stop and Start System)	B
   NG (w/ Stop and Start System)	C

Result: 

A 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

Result: 

B 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

C 

GO TO STOP AND START SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]