Toyota Tacoma (2015-2018) Service Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Troubleshooting of the theft deterrent system is based on the premise
that the power door lock control system, wireless door lock control system*1
and smart key system*2 are operating normally. Accordingly, before troubleshooting
the theft deterrent system, first make certain that the power door lock
control system, wireless door lock control system*1 and smart key system*2
are operating normally.
- *1: w/ Wireless Door Lock System
- *2: w/ Smart Key System
- 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.
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Security indicator light does not illuminate when theft deterrent system is set by key linked operation, wireless operation*1 or entry operation*2. |
Proceed to "Theft Deterrent System cannot be Set or Unset" |
|
|
After doors are locked by key linked operation, wireless operation*1 or entry operation*2 while engine hood is open, theft deterrent system cannot be set by closing the engine hood. |
||
|
Theft deterrent system cannot be unset by key link unlock, wireless door unlock*1 or entry door unlock*2. |
||
|
Theft deterrent system unexpectedly sets itself.*1 |
Proceed to "Theft Deterrent System Unexpectedly Sets Itself" |
|
|
Theft deterrent system cannot be unset by turning the engine on. |
Proceed to "Theft Deterrent System is not Unset when Engine is Running" |
|
|
While alarm is armed, battery is reconnected but alarm does not sound. |
Proceed to "While Alarm is Armed, Battery is Reconnected but Alarm does not Sound" |
|
|
While alarm is armed, engine hood opened but alarm does not sound. |
Proceed to "While Alarm is Armed, Engine Hood is Opened but Alarm does not Sound" |
|
|
Security indicator light does not operate. |
Proceed to engine immobiliser system "Security Indicator Light Does not Blink"*2 |
|
|
Proceed to engine immobiliser system "Security Indicator Light Does not Blink"*3 |
|
|
|
Headlights, taillights or hazard warning lights do not flash while theft deterrent system is in warning operation. |
Proceed to "Some Alarm Functions do not Operate" |
|
|
Interior lights do not illuminate while theft deterrent system is in warning operation. |
||
|
Vehicle horn do not sound while theft deterrent system is in warning operation. |
||
|
Security horn do not sound while theft deterrent system is in warning operation. |
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- *1: w/ Wireless Door Lock System
- *2: w/ Smart Key System
- *3: w/o Smart Key System
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) Check the DLC3 (See page ).
2. INSPECT BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, replace t ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION
BLOCK
(a) Disconnect the main body ECU (multiplex network body ECU) connectors.
Text in Illustration ...
Other materials:
Fail-safe Chart
FAIL-SAFE CHART
HINT:
If any of the following auto cancel conditions are detected while the dynamic
radar cruise control system is controlling vehicle speed, the system clears the
stored vehicle speed and cancels control of vehicle speed by the dynamic radar cruise
control system.
Automatic ...
ABS Warning Light does not Come ON
DESCRIPTION
Refer to ABS Warning Light Remains ON (See page
).
WIRING DIAGRAM
Refer to ABS Warning Light Remains ON (See page
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform
calibration (See page
).
Inspect the ...
Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION
If the skid control ECU (master cylinder solenoid) determines that the vehicle
is being driven at a steep bank angle, the skid control ECU (master cylinder solenoid)
stores DTC C1440 while VSC operation is temporarily disabled. It is not a malfunction
if the system and sensor circ ...
