Toyota Tacoma (2015-2018) Service Manual: IG Power Source Circuit
DESCRIPTION
The main power source is supplied to the air conditioning amplifier assembly when the ignition switch is turned to ON.
The power is used for operating the air conditioning amplifier assembly, servo motors, etc.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - IG POWER SOURCE) |
(a) Disconnect the A36 air conditioning amplifier assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A36-1 (IG+) - Body ground |
Ignition switch off |
Below 1 V |
|
A36-1 (IG+) - Body ground |
Ignition switch ON |
11 to 14 V |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND) |
(a) Disconnect the A36 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A36-10 (GND) - Body ground |
Always |
Below 1 Ω |
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Blower Motor Circuit
DESCRIPTION
The blower motor with fan sub-assembly operates according to signals from the
air conditioning amplifier assembly. The blower motor with fan sub-assembly speed
signals are transmitted ...
PTC Heater Circuit
DESCRIPTION
PTC HTR heater relays are closed in accordance with signals from the air conditioning
amplifier assembly and power is supplied to the quick heater assembly installed
on the radiator h ...
Other materials:
Installation
INSTALLATION
PROCEDURE
1. INSTALL GENERATOR ASSEMBLY
(a) Install the generator bracket to the generator assembly with the bolt.
Torque:
20 N·m {204 kgf·cm, 15 ft·lbf}
(b) Install the generator assembly with the 2 bolts.
Torque:
43 N·m {438 kgf·cm, 32 ft·lbf}
(c) Connect the generato ...
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 parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals ...
TC and CG Terminal Circuit
DESCRIPTION
Tire pressure warning system DTCs can be checked by connecting terminals 13 (TC)
and 4 (CG) of the DLC3. The DTCs are indicated by blinking the tire pressure warning
light.
WIRING DIAGRAM
PROCEDURE
1.
CHECK CAN COMMUNICATION SYSTEM
(a) Check for ...
