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) |
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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 Audio and Visual 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 |
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2. | CHECK NO. 1 NAVIGATION WIRE (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the z31 radio receiver assembly connector. |
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(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 |
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3. | REPLACE NAVIGATION ECU |
(a) Replace the Navigation ECU with a new or known good one.
Click here
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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 > Audio And Visual System (for 8 Inch Display): Telematics Transceiver Disconnected (B15DB)
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Black Out Tape (for Rear Door): Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
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