Toyota Venza: Engine Control System Malfunction (C1201/51)

Toyota Venza Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Engine Control System Malfunction (C1201/51)

DESCRIPTION

If a malfunction in the engine control system is detected, the operations of VSC and TRAC are prohibited by the fail-safe function. When the signals from the engine are input normally, the fail-safe is cancelled and the DTC is not stored.

DTC Code	DTC Detection Condition	Trouble Area
C1201/51	Engine control system malfunction signal continues for 5 seconds.	Engine control system

PROCEDURE

1.	CHECK ENGINE CONTROL SYSTEM

(a) Check if the engine control system DTC is output (See page for 2GR-FE, or
for 1AR-FE).

Result	Proceed to
DTC is not output (for 2GR-FE)	A
DTC is not output (for 1AR-FE)	B
DTC is output (for 2GR-FE)	C
DTC is output (for 1AR-FE)	D

REPLACE ECM (for 2GR-FE)

REPLACE ECM (for 1AR-FE)

INSPECT ENGINE CONTROL SYSTEM (for 2GR-FE)

INSPECT ENGINE CONTROL SYSTEM (for 1AR-FE)

Malfunction in Deceleration Sensor (C0365/28,C1234/34,C1245/32,C1245/45)

DESCRIPTION The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system. The yaw rate sensor has a built-in acceleration sensor. If there is t ...

Open or Short Circuit in ABS Solenoid Relay Circuit (C0278/11)

DESCRIPTION The ABS solenoid relay supplies power to the ABS solenoid and TRAC solenoid. The solenoid relay is turned on 1.5 seconds after the ignition switch is turned to ON, and is turned off if ...

Other materials about Toyota Venza:

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column ...

Security Horn Circuit
DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (driver side junction block assembly) controls the security horn. WIRING DIAGRAM PROCEDURE 1. PERFORM A ...

On-vehicle Inspection
ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: Be sure to follow the correct removal and installation procedures of the front airbag sensor. PROCEDURE 1. INSPECT FRONT AIRBAG SENSOR (VEHICLE NOT INVOLVED IN COLLISION) (a) Perform a diagnostic s ...