Toyota Tacoma (2015-2018) Service Manual: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT SPEEDOMETER
(a) Check speedometer operation.
NOTICE:
- The meter ECU receives the vehicle speed signal from the skid control ECU via CAN communication. Therefore, perform the following inspection referring to values on the Data List of the skid control ECU because it is the source of the vehicle speed signal.
- The Data List values of the skid control ECU are used for this inspection. Therefore, make sure to perform the inspection after confirming that no DTCs are output from the brake control system.
- If the tire size or tire inflation pressure is not within the specified range, or the tires are excessively worn, the speedometer indication error will increase. Therefore, make sure to perform the inspection after checking that the tire size, tire inflation pressure and tire wear are in the specified range.
(1) Before starting the following inspection, check if the Brake Control System outputs the DTCs.
(2) Check the values by referring to the table below.
ABS/VSC/TRAC|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Vehicle Speed |
Maximum wheel speed sensor reading/ Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) |
Vehicle stopped: 0 km/h (0 mph) |
When driving at constant speed: No large fluctuations |
|
Techstream Indication (mph) |
Acceptable Range (mph) |
|---|---|
|
20 |
19.2 to 21.7 |
|
40 |
39.4 to 42.2 |
|
60 |
59.8 to 62.6 |
|
80 |
80.0 to 83.2 |
|
100 |
100.5 to 103.7 |
|
120 |
120.9 to 124.1 |
|
140 |
141.3 to 144.5 |
|
Techstream Indication (km/h) |
Acceptable Range (km/h) |
|---|---|
|
20 |
18.4 to 22.4 |
|
40 |
38.6 to 43.1 |
|
60 |
59.0 to 63.5 |
|
80 |
79.1 to 84.1 |
|
100 |
99.6 to 104.6 |
|
120 |
120.0 to 125.0 |
|
140 |
140.4 to 145.4 |
|
160 |
160.8 to 165.8 |
|
180 |
181.2 to 186.2 |
|
200 |
201.6 to 206.6 |
|
220 |
222.0 to 227.0 |
2. INSPECT TACHOMETER
(a) Check the operation.
(1) Connect the Techstream, and start the engine.
(2) Compare the test results with the tachometer indications.
Reference|
Techstream Indication (rpm) |
Acceptable Range (rpm) Data in ( ) is for Reference |
|---|---|
|
700 |
630 to 770 |
|
1000 |
(900 to 1100) |
|
2000 |
(1850 to 2150) |
|
3000 |
2800 to 3200 |
|
4000 |
(3800 to 4200) |
|
5000 |
4800 to 5200 |
|
6000 |
(5750 to 6250) |
|
7000 |
6700 to 7300 |
|
8000 |
(7700 to 8300) |
3. CHECK LED ILLUMINATION (LED CHECK)
|
Warning or Indicator Light |
Specified Condition |
|---|---|
|
Brake warning light |
Warning or indicator light comes on for about 3 seconds after turning the ignition switch to ON. |
|
VSC OFF indicator light |
|
|
Slip indicator light |
|
|
ABS warning light |
|
|
Tire pressure warning light*1 |
|
|
AUTO LSD indicator light |
|
|
PCS warning light*2 |
|
|
TRAC OFF indicator light |
|
|
Master warning light |
|
|
SRS warning light |
Warning light comes on for about 6 seconds after turning the ignition switch to ON. |
|
MIL (Check engine warning light) |
Warning light comes on when turning the ignition switch to ON. |
- *1: w/ Tire Pressure Warning System
- *2: w/ Toyota Safety Sense P
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is output during the DTC check, inspect the trouble areas listed
for that code. For details of the code, refer to the "See page".
...
Fuel Sender Open Detected (B1500)
DESCRIPTION
This DTC is output when the combination meter assembly detects a fuel sender
gauge assembly malfunction.
DTC No.
DTC Detection Condition
Trouble Area
...
Other materials:
Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
DESCRIPTION
This DTC is stored when items controlled by the main body ECU cannot be customized
via the navigation system vehicle customization screen.
HINT:
The main body ECU controls the items for the following systems that are customizable
via the navigation receiver assembly screen:
...
Rear view monitor system
The rear view monitor system assists the driver by displaying guide lines and
an image of the view behind the vehicle while backing up, for example while parking.
The screen illustrations used in this text are intended as examples, and may
differ from the image that is actually displayed on the ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
The 4 wheel drive control ECU records DTCs when the ECU detects a malfunction
in the ECU itself or in system circuits.
The DTCs can be read through the DLC3 of the vehicle. When the system seems to
be malfunctioning, use the Techstream to check for malfunctions ...
