Toyota Tacoma (2015-2018) Service Manual: Brake System (P1578)
DESCRIPTION
This DTC is stored when a malfunction is detected in the vehicle stability control system. Check the vehicle stability control system when DTC P1578 is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
P1578 |
Brake System |
While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, a malfunction in the vehicle stability control system is detected for 0.2 seconds or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
- Before replacing the ECM, refer to Registration.
w/o Smart Key System: Click here
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w/ Smart Key System: Click here
- First check the CAN communication system by following How to Proceed
with Troubleshooting. After checking that there are no malfunctions in the
CAN communication system, proceed with troubleshooting
Click here
PROCEDURE
|
1. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
Vehicle stability control system DTCs are output |
B |
| B | .gif) |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
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|
2. |
CHECK FOR DTCs (RADAR CRUISE1) |
(a) Clear the DTCs.
Click here
(b) Perform the following to make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the malfunction cannot be detected.
- Drive the vehicle at a speed for which dynamic radar cruise control operation is possible.
- Turn the cruise control system on using the cruise control main switch (ON-OFF button).
- Drive the vehicle at 36 km/h (22 mph) or more for 0.2 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC P1578 is not output |
A |
|
DTC P1578 is output |
B |
| A | |
USE SIMULATION METHOD TO CHECK |
|
|
3. |
REPLACE ECM |
(a) Replace the ECM.
Click here
|
|
4. |
CHECK FOR DTCs (RADAR CRUISE1) |
(a) Clear the DTCs.
Click here
(b) Perform the following to make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the malfunction cannot be detected.
- Drive the vehicle at a speed for which dynamic radar cruise control operation is possible.
- Turn the cruise control system on using the cruise control main switch (ON-OFF button).
- Drive the vehicle at 36 km/h (22 mph) or more for 0.2 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC P1578 is not output |
A |
|
DTC P1578 is output |
B |
| A | |
END |
| B | |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
Cruise Control Input Circuit (P0575)
DESCRIPTION
This DTC is stored when there is a malfunction in the ECM.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P0575
...
Communication Error from ECM to VSC (P1631)
DESCRIPTION
The ECM sends signals such as A/T information signals, dynamic radar cruise control
operation signals, brake operation demand signals, and buzzer operation demand signals
to the skid ...
Other materials:
Fuel Sender Gauge Assembly
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT FUEL SENDER GAUGE ASSEMBLY
(a) Check that the float moves smoothly between F and E.
Text in Illustration
*a
Component without harness connected
(Fuel Sen ...
Front Speed Sensor RH Malfunction (C1401,C1402)
DESCRIPTION
The speed sensor detects wheel speed and sends the appropriate signals to the
skid control ECU (brake actuator assembly). These signals are used for brake control.
The speed sensor rotors have rows of alternating N and S magnetic poles and their
magnetic fields change when the roto ...
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 sy ...
