Diagnostic Trouble Code Chart

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the appropriate section indicated in the following tables.

POWER STEERING SYSTEM

DTC Code	Detection Item	Trouble Area	Return-to normal Condition	P/S Warning Light	Refer To
C1511	Torque Sensor Circuit Malfunction	1. Steering column (torque sensor) 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal
C1512	Torque Sensor Circuit Malfunction	1. Steering column (torque sensor) 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal
C1513	Torque Sensor Circuit Malfunction	1. Steering column (torque sensor) 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal
C1514	Torque Sensor Power Supply Abnormal	1. Steering column (torque sensor) 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal
C1515	Torque Sensor Zero Point Adjustment Undone	-	Zero point calibration occurs	*1	Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1525: Rotation Angle Sensor Initialization Undone
C1516	Torque Sensor Zero Point Adjustment Incomplete	-	Clear DTC	*1	Refer to DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1526: Rotation Angle Sensor Initialization Incomplete
C1517	Torque Hold Abnormal	1. Steering column (torque sensor) 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal
C1521	Motor Circuit Malfunction	Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure
C1522	Motor Circuit Malfunction	1. Steering column 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure
C1523	Motor Circuit Malfunction	1. Steering column 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure
C1524	Motor Circuit Malfunction	1. Steering column 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure
C1525	Rotation Angle Sensor Initialization Undone	-	Rotation angle sensor calibration occurs	*1	Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1525: Rotation Angle Sensor Initialization Undone
C1526	Rotation Angle Sensor Initialization Incomplete	-	Clear DTC	*1	Refer to DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1526: Rotation Angle Sensor Initialization Incomplete
C1528	Motor Rotation Angle Sensor Malfunction	1. Steering column 2. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1528: Motor Rotation Angle Sensor Malfunction
C1531	ECU Malfunction	Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure
C1532	ECU Malfunction	Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure
C1533	ECU Malfunction	Power steering ECU	After normal judgment	*2	Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure
C1534	ECU Malfunction	Power steering ECU	After normal judgment	*2	Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure
C1541	Vehicle Speed Signal Malfunction	1. Speed sensor circuit 2. Skid control ECU 3. CAN communication system 4. Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1541: Vehicle Speed Signal Malfunction
C1551	IG Power Supply Voltage Malfunction	1. ECU-IG No. 1 fuse 2. IG power source circuit 3. Power steering ECU	Ignition switch ON again or after normal confirmation	*1	Refer to DTC C1551: IG Power Supply Voltage Malfunction
C1552	PIG Power Supply Voltage Malfunction	1. PIG power source circuit 2. Power steering ECU	Ignition switch ON again or after normal confirmation	*1	Refer to DTC C1552: PIG Power Supply Voltage Malfunction
C1554	Power Supply Relay Failure	Power steering ECU	Ignition switch ON again	*1	Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure
C1555	Motor Relay Welding Failure	1. Steering column 2. Power steering ECU	Ignition switch on (IG) again	*1	Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure
C1581	Assist Map Number Un-Writing	Power steering ECU	Assist map write or ignition switch ON again	*1	Refer to DTC C1581: Assist Map Number Un-Writing
C1582	Assist Map Number Mismatch	1. Power steering ECU 2. CAN communication system 3. ECM 4. Skid control ECU (brake actuator assembly)	Ignition switch on (IG) again	*2	Refer to DTC C1582: Assist Map Number Mismatch
U0100	Lost Communication with ECM / PCM "A"	1. CAN communication system 2. ECM	Ignition switch ON again or after normal confirmation	*3	Refer to DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module
U0129	Lost Communication with Brake System Control Module	1. CAN communication system 2. Skid control ECU	Ignition switch ON again or after normal confirmation	*1	Refer to DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module

HINT:

*1: Warning light comes on
*2: Warning light turns off (Normal reset)
*3: When an error occurs during steering assist, the warning light does not illuminate. For errors that occur before assist (at the time of the decision to start assist), the warning light illuminates.