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:
Downhill Assist Control system
The downhill assist control system helps to prevent excessive speed on steep
downhill descents.
■ System operation
The system will operate when the vehicle is traveling under 15 mph (25 km/h)
and the front-wheel drive control switch is in the L4 position.
Press the DAC switch. The ind ...
Dtc Check / Clear
DTC CHECK / CLEAR
CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
(e) Check for DTCs.
Click here
CLEAR DTC
(a) Connect the Techstream to the ...
Removal
REMOVAL
PROCEDURE
1. DRAIN DIFFERENTIAL OIL
2. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY (for 2WD)
3. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY (for 4WD)
4. REMOVE REAR DRIVE PINION NUT
(a) Using SST and a hammer, unstake the nut.
SST: 09930-00010
(b) for BD20:
...
