Toyota Tacoma (2015-2018) Service Manual: High Power Supply Voltage Malfunction (C1417)

Toyota Tacoma (2015-2018) Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / High Power Supply Voltage Malfunction (C1417)

DESCRIPTION

If a malfunction is detected in the power supply circuit, the skid control ECU (housed in the master cylinder solenoid) stores this DTC and the fail-safe function prohibits ABS/VSC/TRAC operation.

This DTC is stored when the IG1 terminal voltage deviates from the DTC detection condition due to a malfunction in the power supply or charging circuit such as the battery or generator circuit, etc.

This DTC is cleared when the IG1 terminal voltage returns to normal.

DTC Code	DTC Detection Condition	Trouble Area
C1417	The IG1 terminal voltage is 17.4 V or higher for 0.8 seconds or more.	Charging system Power source circuit Internal power supply circuit of the skid control ECU (master cylinder solenoid)

WIRING DIAGRAM

Refer to DTC C1241 (See page CAUTION / NOTICE / HINT ).

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (master cylinder solenoid), perform calibration (See page PROCEDURE ).

PROCEDURE

1.	INSPECT SKID CONTROL ECU (IG1 TERMINAL)

GO TO CHARGING SYSTEM (ON-VEHICLE INSPECTION)

2.	RECONFIRM DTC

(a) Clear the DTCs (See page (b) Turn the ignition switch off. ).

(b) Turn the ignition switch off.

Result

Result	Proceed to
DTC is output	A
DTC is not output	B

REPLACE MASTER CYLINDER SOLENOID

USE SIMULATION METHOD TO CHECK

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