Toyota Tacoma 2015-2018 Service Manual: Communication Error from VSC to ECM (P1630)
DESCRIPTION
The skid control ECU (brake actuator assembly) sends signals such as cruise control cancel signals and brake demand response signals to the ECM when the dynamic radar cruise control system is operating.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
P1630 |
Communication Error from VSC to ECM |
While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, communication data from the skid control ECU (brake actuator assembly) is logically inconsistent for approximately 0.5 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 CAN COMMUNICATION SYSTEM |
(a) Using the Techstream, check if the CAN communication system is functioning normally.
Click here
|
Result |
Proceed to |
|---|---|
|
CAN communication system DTCs are not output |
OK |
|
CAN communication system DTCs are output |
NG |
| NG | .gif) |
GO TO CAN COMMUNICATION 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.
- Turn the ignition switch to ON.
- Turn the dynamic radar 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 0.5 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC P1630 is not output |
A |
|
DTC P1630 is output |
B |
| A | |
USE SIMULATION METHOD TO CHECK |
|
|
3. |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
(a) Replace the skid control ECU (brake actuator assembly).
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.
- Turn the ignition switch to ON.
- Turn the dynamic radar 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 0.5 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC P1630 is not output |
A |
|
DTC P1630 is output |
B |
| A | |
END |
| B | |
REPLACE ECM |
Vehicle Information Not Obtained (C1A02)
DESCRIPTION
When a new millimeter wave radar sensor assembly is installed, it receives vehicle
specification information (destination, steering wheel position, 2WD or 4WD, etc.)
from the main bod ...
Front Radar Sensor Region Code Mismatch (C1A0A)
DESCRIPTION
When the destination information in the millimeter wave radar sensor assembly
and forward recognition camera do not match, DTC C1A0A is stored.
DTC No.
Detection ...
Other materials:
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Hydraulic Brake Booster
*B
for Vacuum Brake Booster
*C
for Automatic Transmission
*D
for Manual Transmission
*1
SKID CONTROL ECU (BRAKE ACT ...
Parking brake
Lever type
● Sets the parking brake
Fully set the parking brake while depressing the brake pedal.
At this time, the indicator will come on.
● Release the parking brake
Press the button
Turn the lever clockwise
Press it in completely
Pedal type
Sets the parking brake*.
...
Skid Control Buzzer Circuit (C1A4A)
DESCRIPTION
The millimeter wave radar sensor assembly is connected to the forward recognition
camera via CAN communication.
The millimeter wave radar sensor assembly operates the pre-collision alarm by
sending a buzzer request signal to the skid control buzzer.
If the millimeter wave radar se ...
