Toyota Tacoma (2015-2018) Service Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
- Before replacing the ECM, refer to Registration.
w/ Smart Key System: Click here
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w/o Smart Key System: Click here
- When the millimeter wave radar sensor assembly is replaced with a new
one, adjustment of the radar sensor beam axis must be performed.
Click here
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
- If the forward recognition camera has been replaced with a new one,
be sure to perform Recognition Camera/Target Position Memory and Recognition
Camera Axis Adjust.
Click here
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.
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
The dynamic radar cruise control system cannot be turned on using the cruise control main switch (ON-OFF button) |
CAN communication system |
|
|
Cruise control switch circuit |
|
|
|
Cruise main indicator light circuit |
|
|
|
Combination meter assembly |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
ECM |
|
|
|
The dynamic radar cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode |
CAN communication system |
|
|
Cruise control switch circuit |
|
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
|
The vehicle-to-vehicle distance cannot be changed |
CAN communication system |
|
|
Distance control switch circuit |
|
|
|
Combination meter assembly |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Forward recognition camera |
|
|
|
ECM |
|
|
|
Vehicle speed setting cannot be performed (in constant speed control mode) |
Fail-safe chart |
|
|
CAN communication system |
|
|
|
Cruise control switch circuit |
|
|
|
Stop light switch circuit |
|
|
|
Automatic transmission system (for AC60E) |
|
|
|
Automatic transmission system (for AC60F) |
|
|
|
Vehicle stability control system |
|
|
|
ECM |
|
|
|
Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) |
Perform millimeter wave radar sensor assembly adjustment* |
|
|
Fail-safe chart |
|
|
|
Forward recognition camera is temporarily unavailable |
|
|
|
Millimeter wave radar sensor is dirty |
|
|
|
Millimeter wave radar sensor assembly beam axis not adjusted |
|
|
|
CAN communication system |
|
|
|
Cruise control switch circuit |
|
|
|
Automatic transmission system (for AC60E) |
|
|
|
Automatic transmission system (for AC60F) |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Forward recognition camera |
|
|
|
Vehicle stability control system |
|
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
|
Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) |
Fail-safe chart |
|
|
CAN communication system |
|
|
|
Cruise control switch circuit |
|
|
|
Stop light switch circuit |
|
|
|
Automatic transmission system (for AC60E) |
|
|
|
Automatic transmission system (for AC60F) |
|
|
|
Vehicle stability control system |
|
|
|
ECM |
|
|
|
Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) |
Perform millimeter wave radar sensor assembly adjustment* |
|
|
Fail-safe chart |
|
|
|
Forward recognition camera is temporarily unavailable |
|
|
|
Millimeter wave radar sensor is dirty |
|
|
|
Millimeter wave radar sensor assembly beam axis not adjusted |
|
|
|
CAN communication system |
|
|
|
Cruise control switch circuit |
|
|
|
Automatic transmission system (for AC60E) |
|
|
|
Automatic transmission system (for AC60F) |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Forward recognition camera |
|
|
|
Vehicle stability control system |
|
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
|
Hunting/vehicle speed is not constant (in constant speed control mode) |
CAN communication system |
|
|
Vehicle stability control system |
|
|
|
ECM |
|
|
|
Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) |
Millimeter wave radar sensor assembly is dirty |
|
|
Millimeter wave radar sensor assembly beam axis not adjusted |
|
|
|
CAN communication system |
|
|
|
Vehicle stability control system |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
ECM |
|
|
|
Pulling the cruise control main switch to CANCEL does not cancel control of vehicle speed by the dynamic radar cruise control system |
Cruise control switch circuit |
|
|
ECM |
|
|
|
Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system |
Park/neutral position switch assembly (for AC60E) |
|
|
Park/neutral position switch assembly (for AC60F) |
|
|
|
Shift lock control unit assembly (for AC60E) |
|
|
|
Shift lock control unit assembly (for AC60F) |
|
|
|
Automatic transmission system (for AC60E) |
|
|
|
Automatic transmission system (for AC60F) |
|
|
|
ECM |
|
|
|
Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system |
Stop light switch circuit |
|
|
ECM |
|
|
|
Even though the millimeter wave radar sensor is not dirty, the warning message "Clean Sensor" is displayed |
Millimeter wave radar sensor assembly |
|
|
The vehicle approach warning buzzer does not sound |
Skid control buzzer circuit |
|
|
Check millimeter wave radar sensor assembly installation position |
|
|
|
Check installation of forward recognition camera |
|
|
|
Forward recognition camera |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
Even though the vehicle approach warning buzzer is sounding, brake control is not performed when decelerating |
CAN communication system |
|
|
Vehicle stability control system |
|
|
|
Millimeter wave radar sensor assembly |
|
|
|
ECM |
|
|
|
Even though the SET function is operating, the cruise SET indicator does not illuminate |
CAN communication system |
|
|
Cruise SET indicator light circuit |
|
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
|
The cruise control indicator remains illuminated |
CAN communication system |
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
|
Indicators are not illuminated on the multi-information display in the combination meter assembly |
CAN communication system |
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
|
The buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled |
CAN communication system |
|
|
Combination meter assembly |
|
|
|
ECM |
|
*: If error code 7 is output during beam axis alignment, clear the DTCs and perform beam axis alignment again.
Operation Check
OPERATION CHECK
INPUT SIGNAL CHECK
*a
+RES
*b
-SET
*c
ON-OFF
*d
CANCEL
(a) Conne ...
Terminals Of Ecu
TERMINALS OF ECU
CHECK ECM
HINT:
The standard voltage, resistance and waveform between each pair of the ECM terminals
is shown in the table below. The appropriate conditions for checking each p ...
Other materials:
Operation Check
OPERATION CHECK
1. MALFUNCTION DISPLAY (MULTI-INFORMATION DISPLAY)
(a) Open circuit indication
(1) If there is an open circuit between a No. 1 ultrasonic sensor and the clearance
warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed
as shown in the illustration.
...
Skid Control Buzzer Circuit (C1AA7)
DESCRIPTION
The forward recognition camera operates the pre-collision warning by sending
a buzzer request signal to the skid control buzzer.
If the forward recognition camera detects a malfunction in the skid control buzzer
circuit, it will output DTC C1AA7.
DTC No.
Dete ...
Transfer L4 Position Switch Circuit (C1268)
DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C1268
Transfer L4 Position Switch Circuit
Either of the following is detected:
The skid control ECU (brake actuator assembly) dete ...
