Toyota Tacoma 2015-2018 Service Manual: Engine Control System Malfunction (C1201)
DESCRIPTION
If a malfunction in the engine control system is detected, VSC and TRAC operations are prohibited by the fail-safe function.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1201 |
Engine Control System Malfunction |
A malfunction signal is received from the ECM. |
Engine control system |
PROCEDURE
|
1. |
CHECK DTC (ENGINE CONTROL SYSTEM) |
(a) Check if any engine control system DTC is output.
Result|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC is output |
B |
| A | .gif) |
USE SIMULATION METHOD TO CHECK |
| B | |
GO TO ENGINE CONTROL (DIAGNOSTIC TROUBLE CODE CHART) |
SM Solenoid Circuit (C1225,C1468,C1469,C146A,C146B)
DESCRIPTION
These solenoids turn on when signals are received from the skid control ECU (brake
actuator assembly) and they control the pressure acting on the wheel cylinders to
control the brakin ...
ECM Communication Circuit Malfunction (C1203)
DESCRIPTION
The circuit is used to send TRAC and VSC control information from the skid control
ECU (brake actuator assembly) to the ECM, and engine control information from the
ECM to the skid co ...
Other materials:
Door Control Receiver
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE ROOF HEADLINING ASSEMBLY (for Double Cab)
(See page )
2. REMOVE ROOF HEADLINING ASSEMBLY (for Access Cab)
(See page )
3. REMOVE DOOR CONTROL RECEIVER (w/o Tire Pressure Warning System)
(a) Disconne ...
Seat Position Sensor
Components
COMPONENTS
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle not Involved in Collision)
(a) Perform a diagnostic system check (See page
).
2. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle Involved in C ...
Clearance Warning Buzzer Circuit
DESCRIPTION
This circuit consists of the No. 1 clearance warning buzzer and clearance warning
ECU assembly. An ECU-excited type buzzer is used. The battery voltage supplied through
the buzzer is grounded inside the clearance warning ECU assembly using a pulsed
digital pattern, producing sound ...