DESCRIPTION
The radio receiver assembly and navigation ECU are connected via video signal (digital) lines.
This DTC is stored when a video signal (digital) line is disconnected.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
B153A | GVIF Disconnected (from Extension Module to H/U) | GVIF disconnected (from navigation ECU to radio receiver assembly) |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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
PROCEDURE
1. | CHECK DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs(b) Turn the engine switch off.
(c) Turn the engine switch on (IG).
(d) Press the "MAP" switch and check for DTCs.
Body Electrical > Navigation System > Trouble CodesOK:
No DTCs are output.
OK | ![]() | USE SIMULATION METHOD TO CHECK |
|
2. | CHECK NO. 1 NAVIGATION WIRE (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the z31 radio receiver assembly connector. |
|
(b) Disconnect the z32 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
z31-1 (GV2-) - z32-1 (GVO-) | Always | Below 1 Ω |
z31-2 (GV2+) - z32-2 (GVO+) | Always | Below 1 Ω |
z31-3 (GVG2) - z32-3 (GVG1) | Always | Below 1 Ω |
NG | ![]() | REPLACE NO. 1 NAVIGATION WIRE |
|
3. | REPLACE NAVIGATION ECU |
(a) Replace the navigation ECU with a new or known good one.
Click here
|
4. | CHECK DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs(b) Turn the engine switch off.
(c) Turn the engine switch on (IG).
(d) Press the "MAP" switch and check for DTCs.
Body Electrical > Navigation System > Trouble CodesOK:
No DTCs are output.
OK | ![]() | END (NAVIGATION ECU IS DEFECTIVE) |
NG | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Steering Column Assembly: Inspection
INSPECTION PROCEDURE 1. INSPECT PRELOAD (a) Secure the steering column assembly in a vise using aluminum plates, cloths and wooden blocks. NOTICE:
Do not overtighten the vise, as the steering column assembly may become deformed.
Support the steering column assembly with wooden blocks or si ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System (w/o Automatic Headlight Beam Level Control System): Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of ...