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

Toyota Tacoma (2015-2018) Service Manual / Sliding Roof / Sliding Roof System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the sliding roof system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:

What	Vehicle, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

3.	INSPECT BATTERY VOLTAGE

(a) Measure 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.

4.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check if the CAN communication system is functioning normally.

Click here

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

GO TO CAN COMMUNICATION SYSTEM

5.	INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the Techstream, check if the LIN communication system is functioning normally.

Click here

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

GO TO LIN COMMUNICATION SYSTEM

6.	CHECK FOR DTC*

(a) Check for DTCs and make a note of any codes that are output.

Click here (b) Clear the DTCs.

(b) Clear the DTCs.

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

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.	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

GO TO STEP 9

8.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check.

Click here (b) Terminals of ECU.

(b) Terminals of ECU.

Click here (c) Data List / Active Test.

Click here

9.	ADJUST, REPAIR OR REPLACE

(a) Check if the sliding roof drive gear sub-assembly has been replaced, or the sliding roof glass sub-assembly or sliding roof drive cable sub-assembly has been adjusted, or removed and installed.

Result	Proceed to
The sliding roof drive gear sub-assembly has been replaced, or sliding roof glass sub-assembly or sliding roof drive cable sub-assembly has been adjusted, or removed and installed.	A
The sliding roof drive gear sub-assembly has not been replaced, and sliding roof glass sub-assembly and sliding roof drive cable sub-assembly have not been adjusted, or removed and installed.	B

GO TO STEP 11

10.	INITIALIZE SLIDING ROOF SYSTEM

(a) Initialize the sliding roof ECU (sliding roof drive gear sub-assembly).

Click here HINT:

HINT:

If initialization has not been performed, the auto operation, jam protection function, key-off operation, key-linked function, wireless transmitter-linked function and sliding roof open warning will not operate or will operate incorrectly.

11.	CONFIRMATION TEST

END

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