Toyota Tacoma manuals

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

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:

Transfer Case Rear Oil Seal
Components COMPONENTS ILLUSTRATION Replacement REPLACEMENT PROCEDURE 1. DRAIN TRANSFER OIL 2. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY (See page ) 3. REMOVE OUTPUT SHAFT COMPANION FLANGE SUB-ASSEMBLY 4. REMOVE TRANSFER EXTENSION HOUSING TYPE T OIL SEAL ( ...

VSC Buzzer Circuit
DESCRIPTION The skid control ECU (master cylinder solenoid) is connected to the combination meter via CAN communication. The combination meter has a built-in VSC warning buzzer: Sounds intermittently to inform the driver if the temperature of hydraulic brake booster has increased exc ...

Clutch Switch Circuit
DESCRIPTION Clutch switch circuit inspection is necessary for manual transmission vehicles. When the clutch pedal is released, the ECM receives the positive (+) battery voltage through the ECU-IG NO. 2 fuse and ignition switch. While the clutch pedal is depressed, the clutch switch assembly se ...

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