Toyota Yaris: Power Steering System / Power Steering Control Module Processor System Internal Failure (C05D604,...,C15D362)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Steering / Power Assist Systems / Power Steering System / Power Steering Control Module Processor System Internal Failure (C05D604,...,C15D362)

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Return-to-normal Condition	Note
C05D604	Power Steering Control Module Processor System Internal Failure	ECU internal malfunction (CPU malfunction)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C05D646	Power Steering Control Module Processor Calibration / Parameter Memory Failure	ECU internal malfunction (EEPROM error)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C05D649	Power Steering Control Module Processor Internal Electronic Failure	ECU internal malfunction (Peripheral circuit malfunction)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C10001C	Control Module Internal Temperature Sensor "A" Circuit Voltage Out of Range	ECU temperature sensor "A" range malfunction	Power steering ECU assembly	EPS warning light: Comes on	The ECU judges the system has returned to normal	-
C152A18	Power Steering Motor "A" Circuit Current Below Threshold	Motor "A" low current malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C152A19	Power Steering Motor "A" Circuit Current Above Threshold	Motor "A" overcurrent	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C152B18	Power Steering Motor "B" Circuit Current Below Threshold	Motor "B" low current malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C152B19	Power Steering Motor "B" Circuit Current Above Threshold	Motor "B" overcurrent	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C153A00	Malfunction of Power Steering Motor "A" Inverter Pre-Driver	Inverter "A" pre-driver circuit malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C153A19	Power Steering Motor "A" Inverter Circuit Current Above Threshold	Inverter "A" short circuit malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C153B00	Malfunction of Power Steering Motor "B" Inverter Pre-Driver	Inverter "B" pre-driver circuit malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C153B19	Power Steering Motor "B" Inverter Circuit Current Above Threshold	Inverter "B" short circuit malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C154A7E	Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck On	Contrary connection protection relay "A" short circuit malfunction (initial check)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C154A7F	Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck Off	Contrary connection protection relay "A" open circuit malfunction (initial check)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C154B7E	Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck On	Contrary connection protection relay "B" short circuit malfunction (initial check)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C154B7F	Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck Off	Contrary connection protection relay "B" open circuit malfunction (initial check)	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C157A11	Power Steering Motor "A" Current Sensor Circuit Short to Ground	Motor "A" current sensor low voltage malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C157A62	Power Steering Motor "A" Current Sensor Signal Compare Failure	Motor "A" current sensor correlation malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C157B11	Power Steering Motor "B" Current Sensor Circuit Short to Ground	Motor "B" current sensor low voltage malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C157B62	Power Steering Motor "B" Current Sensor Signal Compare Failure	Motor "B" current sensor correlation malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C15D11C	Power Steering Motor Position Sensor "A" Circuit Voltage Out of Range	Rotation angle sensor "A" range malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C15D162	Power Steering Motor Position Sensor "A" Signal Compare Failure	Rotation angle sensor "A" correlation malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C15D21C	Power Steering Motor Position Sensor "B" Circuit Voltage Out of Range	Rotation angle sensor "B" range malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C15D262	Power Steering Motor Position Sensor "B" Signal Compare Failure	Rotation angle sensor "B" correlation malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C15D31C	Power Steering Motor Position Sensor "C" Circuit Voltage Out of Range	Rotation angle sensor "C" range malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-
C15D362	Power Steering Motor Position Sensor "C" Signal Compare Failure	Rotation angle sensor "C" correlation malfunction	Power steering ECU assembly	EPS warning light: Comes on	Ignition switch ON again	-

CAUTION / NOTICE / HINT

NOTICE:

When the power steering ECU assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

Click here

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Chassis > EMPS > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Chassis > EMPS > Trouble Codes

Result	Proceed to
DTCs other than C05D604, C05D646, C05D649, C10001C, C152A18, C152A19, C152B18, C152B19, C153A00, C153A19, C153B00, C153B19, C154A7E, C154A7F, C154B7E, C154B7F, C157A11, C157A62, C157B11, C157B62, C15D11C, C15D162, C15D21C, C15D262, C15D31C or C15D362 are not output.	A
DTCs other than C05D604, C05D646, C05D649, C10001C, C152A18, C152A19, C152B18, C152B19, C153A00, C153A19, C153B00, C153B19, C154A7E, C154A7F, C154B7E, C154B7F, C157A11, C157A62, C157B11, C157B62, C15D11C, C15D162, C15D21C, C15D262, C15D31C or C15D362 are output.	B

REPLACE POWER STEERING ECU ASSEMBLY

GO TO DIAGNOSTIC TROUBLE CODE CHART

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