Toyota Tacoma manuals

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

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

1.

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.

OK

USE SIMULATION METHOD TO CHECK

NG

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.

(c) Measure the resistance according to the value(s) in the table below.

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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  ). ).

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

OK:

No DTCs are output.

OK

END (NO. 1 NAVIGATION WIRE WAS DEFECTIVE)

NG

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  ). ).

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

OK:

No DTCs are output.

OK

END (STEREO COMPONENT TUNER ASSEMBLY IS DEFECTIVE)

NG

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:

Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION: Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing (See page ). HINT: Use the same procedure for both the RH and LH sides. The procedure describe ...

Anti-glare inside rear view mirror
Glare from the headlights of vehicles behind can be reduced by using the following functions. Manual anti-glare inside rear view mirror Normal position Anti-glare position Auto anti-glare inside rear view mirror (type A) In automatic mode, sensors are used to detect the headlights of ...

Disassembly
DISASSEMBLY PROCEDURE 1. INSPECT FRONT DRIVE SHAFT (a) Check whether there is no remarkable play in the outboard joint. (b) Check whether the inboard joint slides smoothly in the thrust direction. (c) Check whether there is no remarkable play in the radial direction of the inboard joint. ( ...

© 2011-2024 Copyright www.ttguide.net