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:
Terminals Of Ecu
TERMINALS OF ECU
1. COMBINATION METER ASSEMBLY
(a) Measure the voltage, resistance and check for pulses according to the value(s)
in the table below.
Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
...
Daytime Running Light Relay
Inspection
INSPECTION
PROCEDURE
1. INSPECT NO. 1 DAY TIME RUNNING LIGHT RELAY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard:
Tester Connection
Condition
Specified ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Perform the following procedure to troubleshoot the dynamic radar cruise
control system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
