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:
Vehicle Speed Sensor "A" No Signal (P050031)
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to
the skid control ECU. The skid control ECU converts these wheel speed signals into
a pulse signal and outputs it to the ECM via the combination meter. The ECM determines
the vehicle speed based on the fr ...
Driving assist systems
To help enhance driving safety and performance, the following systems operate
automatically in response to various driving situations.
Be aware, however, that these systems are supplementary and should not be relied
upon too heavily when operating the vehicle.
■ ABS (Anti-lock Brake Syst ...
Removal
REMOVAL
PROCEDURE
1. REMOVE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY
(See page )
2. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY
3. REMOVE HEADLIGHT DIMMER SWITCH ASSEMBLY
(a) Disconnect the connector.
(b) Disengage the 3 claws to remove the he ...
