Toyota Tacoma 2015-2018 Service Manual: Terminals Of Ecu
TERMINALS OF ECU
1. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
(a) Disconnect the S50 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
|
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
S50-8 (B) - S50-12 (E) |
W - W-B |
Battery power supply |
Always |
11 to 14 V |
|
S50-1 (IG) - S50-12 (E) |
BE - W-B |
IG power supply |
Ignition switch off |
Below 1 V |
|
S50-1 (IG) - S50-12 (E) |
BE - W-B |
IG power supply |
Ignition switch ON |
11 to 14 V |
|
S50-12 (E) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Reconnect the S50 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
S50-7 (OPN) - S50-12 (E) |
B - W-B |
Sliding roof motor open |
Ignition switch ON, OPEN switch on |
Below 1 V |
|
S50-7 (OPN) - S50-12 (E) |
B - W-B |
Sliding roof motor open |
Ignition switch ON, OPEN switch off |
11 to 14 V |
|
S50-5 (CLS) - S50-12 (E) |
SB - W-B |
Sliding roof motor close |
Ignition switch ON, CLOSE switch on |
Below 1 V |
|
S50-5 (CLS) - S50-12 (E) |
SB - W-B |
Sliding roof motor close |
Ignition switch ON, CLOSE switch off |
11 to 14 V |
|
S50-4 (UP) - S50-12 (E) |
LG - W-B |
Sliding roof motor up |
Ignition switch ON, UP switch on |
Below 1 V |
|
S50-4 (UP) - S50-12 (E) |
LG - W-B |
Sliding roof motor up |
Ignition switch ON, UP switch off |
11 to 14 V |
|
S50-6 (DWN) - S50-12 (E) |
L - W-B |
Sliding roof motor down |
Ignition switch ON, DOWN switch on |
Below 1 V |
|
S50-6 (DWN) - S50-12 (E) |
L - W-B |
Sliding roof motor down |
Ignition switch ON, DOWN switch off |
11 to 14 V |
If the result is not as specified, the sliding roof ECU (sliding roof drive gear sub-assembly) may be malfunctioning.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any p ...
Other materials:
Open in One Side of Bus 2 Branch Line
DESCRIPTION
When the CAN bus main lines are normal (no open, short to ground, short to +B
or short between lines) and there is an ECU or sensor on the "Communication Bus
Check" screen that is indicated as not communicating or whose connection status
on the "Communication Bus Ch ...
Data List / Active Test
DATA LIST / ACTIVE TEST
READ 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 ...
Short in GPS Antenna (B15C0,B15C1)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the navigation antenna assembly.
DTC No.
DTC Detection Condition
Trouble Area
B15C0
Navigation antenna error
Navigation antenna assembly
Radio and ...