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

Toyota Tacoma (2015-2018) Service Manual / Differential / Differential System(w/ Rear Differential Lock) / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure listed to troubleshoot the differential system (w/ Differential Lock).
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

3.	INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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

4.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

Click here

HINT:

The ECU of this system is connected to the CAN communication system.

Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

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

CHECK CAN COMMUNICATION SYSTEM

5.	CHECK DTC AND FREEZE FRAME DATA*

(a) Check for DTCs.

Click here (b) Check for freeze frame data.

(b) Check for freeze frame data.

HINT:

Record or print DTCs and freeze frame data if necessary.

Click here (d) Recheck for DTCs.

(d) Recheck for DTCs.

Click here (1) Simulate the malfunction condition and check if the DTCs are output again.

(1) Simulate the malfunction condition and check if the DTCs are output again.

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

GO TO STEP 10

6.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault not listed in problem symptoms table	A
Fault listed in problem symptoms table	B

GO TO STEP 8

7.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU.

Click here (b) Data List / Active Test.

(b) Data List / Active Test.

Click here

8.	REPAIR OR REPLACE

9.	CONFIRM TEST

END

10.	GO TO DTC CHART

11.	REPAIR OR REPLACE

12.	CONFIRM TEST

END

System Diagram

SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method 4 wheel drive control ECU Skid cont ...

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 ...

Other materials:

Display does not Dim when Light Control Switch is Turned ON
PROCEDURE 1. CHECK IMAGE QUALITY SETTING (a) Display the "Display Settings" screen. (b) Turn the light control switch to the tail or head position. (c) Check if "Day Mode" on the display adjustment screen is on. OK: "Day Mode" sett ...

Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT HINT: The procedure described below is for the LH side. Use the same procedure for both the LH and RH sides, unless otherwise specified. PROCEDURE 1. REMOVE REAR SEATBACK COVER (a) Remove the 2 screws. ...

Installation
INSTALLATION PROCEDURE 1. INSTALL FLYWHEEL HOUSING SIDE COVER (a) Install the flywheel housing side cover to the cylinder block sub-assembly. 2. INSTALL STARTER ASSEMBLY (a) Install the starter assembly with the 2 bolts. Torque: 37 N·m {377 kgf·cm, 27 ft·lbf} (b) Connect the engine wire ...