Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecu
TERMINALS OF ECU
1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the A36 air conditioning amplifier assembly connector.
(b) Measure the voltage and resistance 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 |
|---|---|---|---|---|
|
A36-17 (B) - Body ground |
LG - Body ground |
Air conditioning amplifier power supply |
Always |
11 to 14 V |
|
A36-1 (IG+) - Body ground |
GR - Body ground |
Air conditioning amplifier power supply |
Ignition switch ON |
11 to 14 V |
|
A36-10 (GND) - Body ground |
W-B - Body ground |
Air conditioning amplifier ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the A36 air conditioning amplifier assembly connector.
(d) Measure the voltage and resistance according to the value(s) in the table below.
(e) Check for pulse generation according to the value(s) in the table below.
|
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
A35-24 (SHP+) - Body ground |
SB - Body ground |
Seat heater (for Front Passenger Side) drive signal |
|
Below 1 V |
|
A35-23 (SHD+) - Body ground |
R - Body ground |
Seat heater (for Driver Side) drive signal |
|
Below 1 V |
|
A36-11 (LIN1) - Body ground |
SB - Body ground |
Seat heater switch signal |
Ignition switch ON |
Pulse generation |
|
A36-31 (TSR) - A35-15 (SG-2) |
BE - P |
Seat heater sensor (for Front Passenger Side) input signal |
Ignition switch off (25°C [77°F]) |
10 kΩ |
|
A36-32 (TSL) - A35-15 (SG-2) |
V - P |
Seat heater sensor (for Driver Side) input signal |
Ignition switch off (25°C [77°F]) |
10 kΩ |
2. CHECK AIR CONDITIONING CONTROL ASSEMBLY
(a) Check the air conditioning control assembly (See page
.gif)
).
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:
Brake Signal Malfunction (B2284)
DESCRIPTION
This DTC is stored when the brake signal sent via direct line and the brake signal
sent via CAN communication do not match.
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal,
the power source mode returns to the state it was in before the ca ...
Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the stereo component amplifier assembly*1
or navigation receiver assembly*2 detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is no malfunction
in the stereo component amplifier assembly ...
Terminals Of Ecm
TERMINALS OF ECM
1. ECM
HINT:
The standard voltage between each pair of ECM terminals is shown in the table
below. In the table, first follow the information under "Condition". Look under
"Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage
b ...
