Toyota Tacoma manuals

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

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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:

System Description
SYSTEM DESCRIPTION 1. SEAT BELT WARNING SYSTEM DESCRIPTION (a) Seat belt warning light operation for driver seat belt: The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the driver seat belt state, vehicle speed, shift lever posit ...

Removal
REMOVAL PROCEDURE 1. REMOVE REAR BUMPER ASSEMBLY (w/ Towing Package) (See page ) 2. REMOVE REAR BUMPER ASSEMBLY (w/o Towing Package) (See page ) 3. REMOVE CONNECTOR COVER (w/ Towing Package) (See page ) 4. REMOVE REAR BUMPER HOLE COVER (w/o Towing Package) (See page ) 5. REMOVE REAR ...

Removal
REMOVAL PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before pr ...

© 2011-2019 Copyright www.ttguide.net