Toyota Tacoma (2015-2018) Service Manual: Communication Error from VSC to ECM Invalid Serial Data Received (P163081)
DESCRIPTION
The skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 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 |
MIL |
|---|---|---|---|---|
|
P163081 |
Communication Error from VSC to ECM Invalid Serial Data Received |
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 (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 is logically inconsistent for approximately 0.5 second or more. |
|
Does not come on |
- *1: for Hydraulic Brake Booster
- *2: for Vacuum Brake Booster
CAUTION / NOTICE / HINT
NOTICE:
- 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
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- Before replacing the ECM, refer to Registration.
w/o Smart Key System: Click here
w/ Smart Key System: Click here
PROCEDURE
|
1. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Check for DTCs.
for Hydraulic Brake Booster: Click here
for Vacuum Brake Booster: Click here
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output (for Hydraulic Brake Booster) |
B |
|
DTCs are output (for Vacuum Brake Booster) |
C |
| B | .gif) |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
| C | |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
.gif)
|
2. |
CHECK FOR DTCs (CRUISE CONTROL SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON.
- Turn the dynamic radar cruise control system on using the cruise control main switch.
- Drive the vehicle at 36 km/h (22 mph) or more for 1 second or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC P163081 is not output |
A |
|
DTC P163081 is output |
B |
| A | |
USE SIMULATION METHOD TO CHECK |
| B | |
REPLACE ECM |
Cruise Control Input Processor (P160700)
DESCRIPTION
The ECM continuously monitors its main and sub CPUs. This self-check ensures
that the ECM is functioning properly. If outputs from the CPUs are different and
deviate from the standard ...
Brake Switch "A" Signal Compare Failure (P057162)
DESCRIPTION
When the brake pedal is depressed, the stop light switch assembly sends a signal
to the ECM. When the ECM receives this signal, it cancels the dynamic radar cruise
control. The fail-s ...
Other materials:
Identification Information
Vehicle Identification And Serial Numbers
VEHICLE IDENTIFICATION AND SERIAL NUMBERS
1. VEHICLE IDENTIFICATION NUMBER
(a) The vehicle identification number is stamped on the vehicle body and on the
certification label, as shown in the illustration.
A:
Vehicle Identification Number
B:
C ...
Disposal
DISPOSAL
PROCEDURE
1. DISPOSE OF BRAKE BOOSTER ACCUMULATOR ASSEMBLY
(a) Place the brake booster accumulator in a vise and cover it with a cloth.
(b) Slowly cut a hole on the brake booster accumulator side in the A portion
shown in the illustration on the left. And discharge the gas and liqui ...
Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2) (P0778)
DESCRIPTION
Changing from 1st to 6th is performed by the ECM turning shift solenoid valves
SL1, SL2, SL3 and SL4 on and off. If an open or short circuit occurs in any of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves
to allow the vehicle to be operated ...
