Toyota Tacoma 2015-2018 Service Manual: Road Test
ROAD TEST
HINT:
'SET' and '-', 'RES' and '+', 'ON-OFF' functions share the same switch. Operate the cruise control main switch according to the directions indicated on the switch.
1. INSPECT 'SET' FUNCTION
(a) Push the ON-OFF button on (A).
(b) Drive at the vehicle at a desired speed 40 km/h (25 mph) or higher.
(c) Push down the control switch lever to "-/SET" to set the cruising speed (B).
(d) After releasing the lever, check that the vehicle cruises at the set speed.
2. INSPECT '+' FUNCTION
(a) Set a desired speed as in step 1.
(b) Check that the vehicle speed increases while the control switch lever is pushed up to "+/RES" (C).
(c) Check that the vehicle cruises at the newly set speed when the switch is released (D).
(d) Momentarily (approximately 0.6 seconds) push up the control switch lever to the "+/RES", and then release it. Check that the vehicle speed increases by approximately 1.0 km/h or 1 mph with each lever operation (Tap-up function).
3. INSPECT '-' FUNCTION
(a) Set a desired speed as in step 1.
(b) Check that the vehicle speed decreases while the control switch lever is pushed down to "-/SET" (E).
(c) Check that the vehicle cruises at the newly set speed when the switch is released (F).
(d) Momentarily (approximately 0.6 seconds) push down the control switch to "-/SET", and then release it. Check that the vehicle speed decreases by approximately 1.0 km/h or 1 mph with each lever operation (Tap-down function).
HINT:
- The cruise control system automatically cancels when the vehicle speed decreases to below 40 km/h (25 mph).
4. INSPECT 'CANCEL' FUNCTION
(a) Set a desired speed as in step 1.
(b) Check that the system cancels cruise control when one of the following is conducted:
(1) Depressing the brake pedal.
(2) Shifting into any position except D and S while driving.
(3) Pushing the cruise control main switch ON-OFF button off (G).
(4) Pulling the cruise control switch lever to "CANCEL" (H).
5. INSPECT ' RES (RESUME)' FUNCTION
(a) Set a desired speed as in step 1.
(1) After canceling the cruise control according to any of the above operations except (G), push up the switch lever to "+/RES" at a speed of 40 km/h (25 mph) or higher (I).
(2) Check that the vehicle resumes the previously set speed.
HINT:
The 'RES' function does not resume the set speed when the vehicle speed decreases to below 40 km/h (25 mph).
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the causes of the problem symptom.
The potential causes of the symptoms are listed in order of probability
in the & ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
The ECM stores DTCs (Diagnostic Trouble Codes) when trouble occurs on the vehicle.
The diagnosis system allows reading of DTCs stored in the ECM when a the Techstre ...
Other materials:
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down, or
that the shift point is too high or too low, conduct the following road test referring
to t ...
Brake Control Signal Mismatch (C1A69)
DESCRIPTION
The skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake
actuator assembly)*2 sends signals to the millimeter wave radar sensor assembly
according to the brake control status. If the millimeter wave radar sensor assembly
receives a vehicle stability control sys ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
CAUTION / NOTICE / HINT
CAUTION:
Be sure to correctly follow the removal and installation procedures for the front
airbag sensors.
PROCEDURE
1. INSPECT FRONT AIRBAG SENSOR (for Vehicle not Involved in Collision)
(a) Perform a diagnostic system check (See page
).
2. I ...
