Diagnostic Trouble Code Chart
HINT:
If a trouble code is displayed during the DTC check, inspect the circuit listed for that code. For details of each code, refer to the relevant page listed under respective "Refer to" in the DTC chart.
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. Wire harness or connector 2. Torque sensor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction |
| C1512 | Torque Sensor Circuit Malfunction | 1. Wire harness or connector 2. Torque sensor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction |
| C1513 | Torque Sensor Circuit Malfunction | 1. Wire harness or connector 2. Torque sensor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction |
| C1515 | Torque Sensor Zero Point Adjustment Undone | - | After calibrating torque sensor zero point | ◦ | Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete |
| C1516 | Torque Sensor Zero Point Adjustment Incomplete | - | After clearing the DTC | ◦ | Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete |
| C1521 | Motor Circuit Malfunction | 1. Wire harness or connector 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction |
| C1522 | Motor Circuit Malfunction | 1. Wire harness or connector 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction |
| C1523 | Motor Circuit Malfunction | 1. Wire harness or connector 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction |
| C1524 | Motor Circuit Malfunction | 1. Wire harness or connector 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction |
| C1525 | Rotation Angle Sensor Initialization Undone | - | After calibrating torque sensor zero point | ◦ | Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete |
| C1526 | Rotation Angle Sensor Initialization Incomplete | - | After clearing the DTC | ◦ | Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete |
| C1528 | Motor Rotation Angle Sensor Malfunction | 1. Motor rotation angle sensor (built into power steering gear assembly) 2. Wire harness or connector 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1528: Motor Rotation Angle Sensor Malfunction |
| C1531 | ECU Malfunction | Power steering ECU assembly | Engine switch on (IG) again | ◦ | Refer to DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction |
| C1532 | ECU Malfunction | 1. Wire harness or connector 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction |
| C1533 | ECU Malfunction | Power steering ECU assembly | Engine switch on (IG) again and after normal confirmation | ◦ | Refer to DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction |
| C1534 | ECU Malfunction | Power steering ECU assembly | Engine switch on (IG) again | ◦ | Refer to DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction |
| C1541 | Vehicle Speed Signal Malfunction | 1. Speed sensor circuit 2. Skid control ECU 3. CAN communication system 4. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1541: Vehicle Speed Signal Malfunction |
| C1551 | IG Power Supply Voltage Malfunction | Power steering ECU assembly | Engine switch on (IG) again | ◦ | Refer to DTC C1551: IG Power Supply Voltage Malfunction |
| C1552 | PIG Power Supply Voltage Malfunction | 1. EPS fuse 2. Wire harness or connector 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure |
| C1554 | Power Supply Relay Failure | 1. EPS fuse 2. Wire harness or connector 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure |
| C1555 | Motor Relay Welding Failure | 1. Wire harness or connector 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly |
Engine switch on (IG) again | ◦ | Refer to DTC C1555: Motor Relay Welding Failure |
| C1581 | Assist Map Number Un-Writing | 1. ECM 2. Gateway ECU 3. Power steering ECU assembly |
- | ◦ | Refer to DTC C1581: Assist Map Number Un-Writing |
| U0100 | Lost Communication with ECM / PCM "A" | 1. CAN communication system 2. ECM (when only U0100 is output) |
Normal confirmation of CAN communication system | X | 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 (when only U0129 is output) |
Normal confirmation of CAN communication system | ◦ | Refer to DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module |
HINT:
- ◦: Warning light comes on
- X: Warning light goes off (normal reset)