Toyota Tacoma 2015-2018 Service Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
- The pre-collision system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
"Pre-Collision System Unavailable" is displayed |
Perform millimeter wave radar sensor assembly adjustment*1 |
|
|
Millimeter wave radar sensor assembly |
|
|
|
Combination meter assembly |
|
|
|
"Pre-Collision System Unavailable Clean Sensor" is displayed |
Foreign matter attached to millimeter wave radar sensor assembly |
- |
|
Millimeter wave radar sensor assembly |
|
|
|
Combination meter assembly |
|
|
|
"Front Camera Unavailable" is displayed |
Check current condition of forward recognition camera based on related Data List items.
|
|
|
Forward recognition camera |
|
|
|
Combination meter assembly |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
"Front Camera Unavailable Remove Debris On Windshield" is displayed |
The forward recognition camera or windshield glass within the field of view of the forward recognition camera is dirty or fogged up |
- |
|
Forward recognition camera |
|
|
|
Combination meter assembly |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Although there is possibility of collision, pre-collision controls (all controls) do not operate ("Pre-collision System Unavailable" is not displayed) |
Check if pre-collision system is canceled |
- |
|
Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions) |
|
|
|
Check installation condition of millimeter wave radar sensor assembly |
|
|
|
Perform millimeter wave radar sensor assembly adjustment |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Check installation condition of forward recognition camera |
|
|
|
Perform forward recognition camera adjustment |
|
|
|
Forward recognition camera |
|
|
|
Although there is no possibility of collision, pre-collision controls (all controls) operate |
Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions) |
|
|
Check installation condition of millimeter wave radar sensor assembly |
|
|
|
Perform millimeter wave radar sensor assembly adjustment |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Check installation condition of forward recognition camera |
|
|
|
Perform forward recognition camera adjustment |
|
|
|
Forward recognition camera |
|
|
|
Pre-collision system does not operate |
Check if pre-collision system is canceled |
- |
|
ECU power source circuit |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Pre-collision system cannot be canceled (PCS warning light does not illuminate) |
Check steering pad switch assembly condition |
- |
|
Combination meter assembly (check if indicator illuminates using Active Test) |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Combination meter assembly |
|
|
|
Pre-collision system warning timing cannot be changed (warning timing setting screen not displayed on multi-information display) |
Millimeter wave radar sensor assembly |
|
|
Combination meter assembly |
|
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- *1: If error code 7 is output during beam axis alignment, clear the DTCs and perform beam axis alignment again.
Operation Check
OPERATION CHECK
CHECK PRE-COLLISION SYSTEM SETTING
(a) Turn the ignition switch to ON.
(b) Operate the steering pad switch assembly to change the setting of PCS on
the multi-information display t ...
Terminals Of Ecu
TERMINALS OF ECU
CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY
(a) Measure the voltage and resistance according to the value(s) in the table
below.
Terminal No. (Symbol)
Wir ...
Other materials:
Vehicle Speed Sensor "A" No Signal (P050031)
DESCRIPTION
Vehicles, which are equipped with ABS (Anti-lock Brake System), detect the vehicle
speed using the skid control ECU (brake actuator assembly) and speed sensors. Each
speed sensor monitors the wheel rotation speed and sends a signal to the skid control
ECU. The skid control ECU con ...
Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the stereo component amplifier assembly*1
or navigation receiver assembly*2 detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is no malfunction
in the stereo component amplifier assembly ...
Steering Lock Position Signal Circuit Malfunction (B2285)
DESCRIPTION
This DTC is stored when the steering lock position signal sent by the steering
lock ECU (steering lock actuator or upr bracket assembly) via direct line and the
steering lock position signal sent via LIN communication do not match.
HINT:
When the cable is disconnected and reconnec ...