Lexus ES: AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION
This DTC is stored when a video or audio signal is interrupted due to auxiliary battery voltage input to the radio receiver assembly dropping temporarily.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B158F | AV Signal Stoppage (Low Battery Voltage) | A video or audio signal is interrupted when the auxiliary battery voltage drops |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
Click here
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When replacing the radio receiver assembly, always replace it with a new one. If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio receiver assembly may not operate normally.
PROCEDURE
| 1. | CHECK VEHICLE SIGNAL (OPERATION CHECK) |
| (a) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check. Click here |
|
(b) Measure the auxiliary battery voltage.
Standard Voltage:
11 to 15.5 V
HINT:
This display is updated once per second.
| NG | .gif) | GO TO STEP 3 |
|
| 2. | CHECK DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs(b) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble CodesOK:
No DTCs are output.
| OK | | END |
| NG | | REPLACE RADIO RECEIVER ASSEMBLY |
| 3. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY POWER SOURCE) |
(a) Disconnect the G5 radio receiver assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G5-4 (+B1) - Body ground | Power switch off | 11 to 14 V |
| OK | | REPLACE RADIO RECEIVER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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SEE MORE:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Road Sign Assist System DTC No. Detection Item Link U012587 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message U012987 Lost Communication with Brake System Control Module Missing Message U014087 Lost Communic
Installation
INSTALLATION PROCEDURE 1. INSTALL TIRE PRESSURE WARNING ECU AND RECEIVER NOTICE:
Do not drop the tire pressure warning ECU and receiver, strike it with tools or subject it to impact.
If the tire pressure warning ECU and receiver is subjected to an impact, replace it with a new one.
(a) Conne
