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:
All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch
DESCRIPTION
The main body ECU (multiplex network body ECU) receives switch signals from the
door control switch assembly on the front passenger door and activates the door
lock motor on each door according to these signals.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USIN ...
Towing Tail Relay
Inspection
INSPECTION
PROCEDURE
1. INSPECT TOWING TAIL RELAY
(a) Check the resistance.
(1) Using an ohmmeter, measure the resistance between the terminals.
Standard:
Tester Connection
Specified Condition
3-5
10 kΩ or higher
...
SD Card Communication Malfunction (B158C)
DESCRIPTION
The navigation receiver assembly stores this DTC when the SD card cannot be mounted
when inserted into the SD card slot.
DTC Code
DTC Detection Condition
Trouble Area
B158C
The SD card cannot be mounted when inserted into t ...
