Toyota Tacoma (2015-2018) Service Manual: On-vehicle Inspection

Toyota Tacoma (2015-2018) Service Manual / Meter / Gauge / Display / Meter / Gauge System / 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

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

Reference (Indicator Type: mph)

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

Reference (Indicator Type: km/h)

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

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