Toyota Tacoma (2015-2018) Service Manual: LVDS Signal Malfunction (from Extension Module) (B1532,B156C)

Toyota Tacoma (2015-2018) Service Manual / Navigation / Multi Info Display / Navigation System / LVDS Signal Malfunction (from Extension Module) (B1532,B156C)

DESCRIPTION

DTC Code	DTC Detection Condition	Trouble Area
B1532	When one of the conditions below is met: Video signal (digital) is lost. The stereo component tuner assembly is not connected while the ignition switch is ON or ACC. Communication between the navigation receiver assembly and the stereo component tuner assembly is not possible when the engine is started.	Stereo component tuner assembly Navigation receiver assembly Harness or connector No. 1 navigation wire
B156C

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary. (w/ SDARS System)

PROCEDURE

CHECK DTC

(a) Clear the DTCs (See page (b) Check for DTCs (See page ). ).

(b) Check for DTCs (See page OK: ).

OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

2.	CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT TUNER ASSEMBLY)

(a) Disconnect the N19, N27 and N28 navigation receiver assembly connectors.

(b) Disconnect the S52, S53 and S54 stereo component tuner assembly connectors.

Standard Resistance:

Tester Connection	Condition	Specified Condition
N27-1 (USV4) - S53-1 (USV4)	Always	Below 1 Ω
N27-2 (US4-) - S53-2 (US4-)	Always	Below 1 Ω
N27-3 (US4+) - S53-3 (US4+)	Always	Below 1 Ω
N27-4 (UGO4) - S53-4 (UGO4)	Always	Below 1 Ω
N27-5 (USG4) - S53-5 (USG4)	Always	Below 1 Ω
N19-4 (+B2) - S52-4 (+B)	Always	Below 1 Ω
N19-3 (ACC2) - S52-3 (ACC2)	Always	Below 1 Ω
N19-8 (GND2) - S52-8 (GND2)	Always	Below 1 Ω
N28-1 (LVDS) - S54-1 (LVDS)	Always	Below 1 Ω
N27-1 (USV4) - Body ground	Always	10 kΩ or higher
N27-2 (US4-) - Body ground	Always	10 kΩ or higher
N27-3 (US4+) - Body ground	Always	10 kΩ or higher
N27-4 (UGO4) - Body ground	Always	10 kΩ or higher
N27-5 (USG4) - Body ground	Always	10 kΩ or higher
N19-4 (+B2) - Body ground	Always	10 kΩ or higher
N19-3 (ACC2) - Body ground	Always	10 kΩ or higher
N19-8 (GND2) - Body ground	Always	10 kΩ or higher
N28-1 (LVDS) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK NO. 1 NAVIGATION WIRE

(a) Replace the No. 1 navigation wire with a known good one (See page (b) Clear the DTCs (See page ). ).

(b) Clear the DTCs (See page (c) Check for DTCs (See page ). ).

OK:

No DTCs are output.

END (NO. 1 NAVIGATION WIRE WAS DEFECTIVE)

4.	CHECK STEREO COMPONENT TUNER ASSEMBLY

(a) Replace the stereo component tuner assembly with a known good one (See page (b) Clear the DTCs (See page ). ).

(b) Clear the DTCs (See page (c) Check for DTCs (See page ). ).

OK:

No DTCs are output.

END (STEREO COMPONENT TUNER ASSEMBLY IS DEFECTIVE)

REPLACE NAVIGATION RECEIVER ASSEMBLY

Lost Communication with Meter (B1324)

DESCRIPTION This DTC is stored when a communication error occurs between the navigation receiver assembly and combination meter assembly. DTC No. DTC Detection Condition ...

HD Radio Tuner Malfunction (B1551,B15A0,B15AD,B15B0,B15B3,B15B4,B15B7)

DESCRIPTION These DTCs are stored when a malfunction occurs in the navigation receiver assembly. DTC No. DTC Detection Condition Trouble Area B1551 ...

Other materials:

Driver Side Door Entry Lock Function does not Operate
DESCRIPTION If the entry lock function does not operate for the driver door only, but the entry unlock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the front door outside handle assembly LH (lock sensor ...

Rear Power Outlet Socket
Components COMPONENTS ILLUSTRATION ILLUSTRATION Installation INSTALLATION PROCEDURE 1. INSTALL POWER OUTLET SOCKET ASSEMBLY (a) Install the clamp. (b) Connect the connector. (c) Using a torx socket wrench T30, install the 4 screws and the power outlet socket assemb ...

FCM Destination Information Unmatched (C1AA1)
DESCRIPTION When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store country specification information received from the main body ECU (multiplex network body ECU) and ECM. If the country specification information stored in the forwa ...