Toyota Tacoma (2015-2018) Service Manual: How To Proceed With Troubleshooting

Toyota Tacoma (2015-2018) Service Manual / Air Conditioning / Air Conditioning System(for Manual Air Conditioning System) / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the air conditioning system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

(a) Inspect the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

3.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result	Proceed to
CAN DTCs is not output	A
CAN DTCs is output	B

GO TO CAN COMMUNICATION SYSTEM

4.	CHECK FOR DTC*

(a) Check for DTCs and note any code that is output.

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output above, try to force the air conditioning system to output DTCs by simulating the conditions indicated by the DTC.

Result	Proceed to
DTCs is not output	A
DTCs is output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

5.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

6.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Data List / Active Test

Click here (b) Terminals of ECU

(b) Terminals of ECU

Click here (c) On-vehicle Inspection

(d) Inspection

7.	ADJUST, REPAIR OR REPLACE

END

Precaution

PRECAUTION 1. EXPRESSIONS OF IGNITION SWITCH HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below ...

System Description

SYSTEM DESCRIPTION 1. GENERAL (a) The air conditioning system has the following controls. Control Outline Manual Control The air conditioner amplif ...

Other materials:

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR SEATBACK HINGE SUB-ASSEMBLY (a) Install the rear seatback hinge sub-assembly with the 2 bolts. Torque: 30 N·m {306 kgf·cm, 22 ft·lbf} 2. INSTALL REAR SEATBACK ASSEMBLY (a) Install the rear seatback assembly with the 2 bolts. Torque: 37 N·m {377 k ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Steering Lock System DTC Code Detection Item See page B2781 Open / Short in Steering Lock ECU B2782 Power Source Control ECU Malfunction ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT AIR CONDITIONER PRESSURE SENSOR (for Automatic Air Conditioning System) (a) Check the wire harness. (1) Disconnect the A34 air conditioner pressure sensor connector. (2) Disconnect the A35 and A36 air conditioning amplifier assembly connector. ...