Toyota Tacoma (2015-2018) Service Manual: 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:
|
|
|
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
|
1. |
CHECK DTC |
(a) Clear the DTCs (See page .gif)
).
(b) Check for DTCs (See page ).
OK:
No DTCs are output.
| OK | .gif) |
USE SIMULATION METHOD TO CHECK |
|
.gif)
|
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 |
|
|
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 ).
(c) Check for DTCs (See page ).
OK:
No DTCs are output.
| OK | |
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 ).
(c) Check for DTCs (See page ).
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:
Vehicle Speed Signal Malfunction (B2282,B2283)
DESCRIPTION
DTC B2282 is stored when the vehicle speed signal sent by the combination meter
assembly via direct line and the vehicle speed signal sent via CAN communication
do not match.
DTC B2283 is stored when a malfunction in the vehicle speed sensor is detected.
HINT:
When the cable is d ...
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down, or
that the shift point is too high or too low, conduct the following road test referring
to t ...
Removal
REMOVAL
PROCEDURE
1. REMOVE FRONT FENDER MUDGUARD (w/ Mudguard)
Click here
2. REMOVE FRONT FENDER WHEEL OPENING MOULDING (w/ Over Fender)
Click here
3. REMOVE FRONT NO. 1 WHEEL OPENING EXTENSION PAD (w/ Front Spoiler)
(a) Remove 9 screws and front No. 1 wheel opening extension ...
