HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - ]
HINT
*: Use the Techstream.
- VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
- CUSTOMER PROBLEM ANALYSIS Confirm problem symptoms. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612229-S16181698712014042900000) . NEXT: Go to next step
- INSPECT BATTERY VOLTAGE* Measure the voltage of the battery. Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. Using the Techstream, inspect battery voltage reduction history "Battery Voltage Lo Record" in the Data List. Refer to «DATA LIST / ACTIVE TEST [07/2013 - ]»(ref-612248-S36037201142014042900000) . NEXT: Go to next step
- CHECK DTC AND FREEZE FRAME DATA* Check and record DTCs and freeze frame data. NEXT: Go to next step
- CLEAR DTC AND FREEZE FRAME DATA* Clear the DTCs and freeze frame data. NEXT: Go to next step
- PROBLEM SYMPTOM CONFIRMATION RESULT Result Proceed to Symptom does not occur. A Symptom occurs. B B --> Go to step 8 A: Go to next step
- SYMPTOM SIMULATION Perform symptom simulation. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612229-S16181698712014042900000) . NEXT: Go to next step
- CHECK CAN COMMUNICATION SYSTEM* Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . RESULT Result Proceed to CAN communication system DTC is not output. A CAN communication system DTC is output. B HINT: If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first. If communication to the power steering ECU cannot be established through the Techstream, inspect terminals CANH and CANL of the DLC3 and power steering ECU, and the IG circuit of the power steering ECU. B --> PROCEED TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612381-S39654712422014042900000) A: Go to next step
- CHECK FOR DTC* Check for DTCs. Refer to «DTC CHECK / CLEAR [07/2013 - ]»(ref-612248-S41680360012014042900000) . HINT: Refer to Diagnostic Trouble Code Chart when any DTCs are output. Refer to «DIAGNOSTIC TROUBLE CODE CHART [07/2013 - ]»(ref-612248-S18409726142014042900000) . RESULT Result Proceed to DTC is not output. A DTC is output. B B --> Go to step 11 A: Go to next step
- PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE [07/2013 - ]»(ref-612248-S27798783762014042900000) . NEXT: Go to next step
- CIRCUIT INSPECTION NEXT: Go to next step
- IDENTIFICATION OF PROBLEM NEXT: Go to next step
- REPAIR OR REPLACE NEXT: Go to next step
- CONFIRMATION TEST NEXT --> END
PROBLEM SYMPTOMS TABLE [07/2013 - ]
HINT
- 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 of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See Service Information |
|---|---|---|
| Steering is heavy. | Front tires (Improperly inflated, unevenly worn) | Refer to INSPECTION [07/2013 - ] |
| Front wheel alignment (Incorrect) | Refer to ADJUSTMENT [07/2013 - ] | |
| Front suspension (Lower ball joint) | Refer to INSPECTION [07/2013 - ] | |
| Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] | |
| Steering column assembly | Refer to REMOVAL [07/2013 - 12/2013] | |
| Torque sensor (Built into steering column assembly) | ||
| Power steering motor (Built into steering column assembly) | ||
| Speed sensor | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - ] | |
| Skid control ECU | Refer to TERMINALS OF ECU [07/2013 - ] | |
| Battery and power source system | Refer to ON-VEHICLE INSPECTION [07/2013 - ] | |
| Power steering ECU power supply voltage and relay | Refer to DATA LIST / ACTIVE TEST [07/2013 - ] | |
| Power steering ECU assembly | Refer to TERMINALS OF ECU [07/2013 - ] | |
| Steering effort differs between right and left or is uneven. | Calibration of rotation angle sensor output and torque sensor | Refer to CALIBRATION [07/2013 - ] |
| Front tires (Improperly inflated, unevenly worn) | Refer to INSPECTION [07/2013 - ] | |
| Front wheel alignment (Incorrect) | Refer to ADJUSTMENT [07/2013 - ] | |
| Front suspension (Lower ball joint) | Refer to INSPECTION [07/2013 - ] | |
| Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] | |
| Torque sensor (Built into steering column assembly) | ||
| Steering column assembly | Refer to REMOVAL [07/2013 - 12/2013] | |
| Power steering motor (Built into steering column assembly) | ||
| Power steering ECU assembly | Refer to TERMINALS OF ECU [07/2013 - ] | |
| While driving, steering effort does not change in accordance with vehicle speed or the steering wheel does not return properly. | Front suspension (Lower ball joint) | Refer to INSPECTION [07/2013 - ] |
| Speed sensor | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - ] | |
| Skid control ECU | Refer to TERMINALS OF ECU [07/2013 - ] | |
| Torque sensor (Built into steering column assembly) | ||
| Power steering motor (Built into steering column assembly) | ||
| Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] | |
| Power steering ECU assembly | Refer to TERMINALS OF ECU [07/2013 - ] | |
| A knocking (or cranking) sound occurs when turning the steering wheel while power steering operating. | Front suspension (Lower ball joint) | Refer to INSPECTION [07/2013 - ] |
| Steering intermediate shaft | ||
| Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] | |
| Noise occurs when turning the steering wheel during low speed driving. | Power steering motor (Built into steering column assembly) | |
| Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] | |
| Steering column assembly | Refer to REMOVAL [07/2013 - 12/2013] | |
| Steering sensor | ||
| Power steering ECU assembly | Refer to TERMINALS OF ECU [07/2013 - ] | |
| High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the vehicle stopped. | Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] |
| Power steering motor (Built into steering column assembly) | ||
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock. | Rack and pinion power steering gear assembly | Refer to INSPECTION [07/2013 - ] |
| Power steering motor (Built into steering column assembly) | ||
| Steering column assembly | Refer to REMOVAL [07/2013 - 12/2013] | |
| EPS warning light remains on. | EPS warning light circuit | Refer to EPS Warning Light Circuit |
POWER STEERING SYSTEM
Scheme 1
![Scheme 1: TERMINALS OF ECU [07/2013 - ]](https://i.diagnostdata.com/repair/f7/f71ceea8a2dcf5e5e4611aa74e6638e96b2a102724c49f36dfb951d445cead07.webp)
- CHECK POWER STEERING ECU TEXT IN ILLUSTRATION *a Component without harness connected (Power Steering ECU Assembly) - - HINT: As connector z1 uses a lock lever, each terminal cannot be checked while the connector is still connected to the power steering ECU. Terminal No. (Symbol) Terminal Description z1-1 (V) V phase motor output z1-2 (U) U phase motor output z1-3 (W) W phase motor output Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A14-1 (PIG) - A14-2 (PGND) W - B Motor power supply Always 9 to 16 V A14-2 (PGND) - Body ground B - Body ground Power ground Always Below 1 ohms A15-1 (CANH) - A15-7 (CANL) B - W CAN communication line Ignition switch off 57 to 63 ohms A15-6 (IG) - A14-2 (PGND) G-W - B IG power supply Ignition switch ON 9 to 16 V z2-5 (RZV) - A14-2 (PGND) R - B Rotation angle sensor excitation output signal Engine running, steering wheel being turned 0.68 to 4.42 V z2-7 (RZG) - A14-2 (PGND) B - B Rotation angle sensor excitation circuit ground Always Below 1 ohms z2-13 (RZCS) - A14-2 (PGND) L - B Rotation angle sensor COS aspect input signal Engine running, steering wheel being turned 0.68 to 4.42 V z2-14 (RZSN) - A14-2 (PGND) Y - B Rotation angle sensor SIN aspect input signal Engine running, steering wheel being turned 0.68 to 4.42 V z2-8 (TRQ1) - z2-11 (TRQG) W - B Torque sensor signal 1 Engine running, steering wheel not turned (without load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 2.3 to 3.8 V Engine running, steering wheel turned to left with vehicle stopped 1.2 to 2.7 V z2-9 (TRQV) - z2-11 (TRQG) R - B Torque sensor power supply Ignition switch ON 4.5 to 5.5 V z2-10 (TRQ2) - z2-11 (TRQG) Y - B Torque sensor signal 2 Engine running, steering wheel not turned (without load) 2.3 to 2.7 V Engine running, steering wheel turned to right with vehicle stopped 1.2 to 2.7 V Engine running, steering wheel turned to left with vehicle stopped 2.3 to 3.8 V z2-11 (TRQG) - Body ground B - Body ground Torque sensor ground Always Below 1 ohms If the result is not as specified, the ECU may have a malfunction.
Scheme 2
![Scheme 2: DIAGNOSIS SYSTEM [07/2013 - ]](https://i.diagnostdata.com/repair/50/509bf9230ff55e9a6d038683e43ecae25c202051b5ec57ff17d8b0e965621642.webp)
- CHECK DLC3 Check the DLC3. Refer to «GENERAL INFORMATION [07/2013 - ]»(ref-612229-S35930398492014042900000) .
- FUNCTION OF EPS WARNING LIGHT When a malfunction is detected in the power steering system, the EPS warning light in the combination meter comes on to inform the driver of the malfunction. HINT: When power assist is stopped or reduced, the EPS warning light comes on. Power assist is stopped: When a malfunction occurs in the power steering system (including lost CAN communication, etc.) When the engine stalls (not a malfunction) During the period after the ignition switch is turned to ON until the engine is started (not a malfunction) Power assist is reduced: When a malfunction occurs in the power steering system (including lost CAN communication, etc.) When the battery voltage decreases (not a malfunction)
DTC CHECK / CLEAR [07/2013 - ]
- CHECK DTC Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Trouble Codes. Read the DTCs following the display on the Techstream. Refer to Diagnostic Trouble Code Chart for DTC information. Refer to «DIAGNOSTIC TROUBLE CODE CHART [07/2013 - ]»(ref-612248-S18409726142014042900000) .
- CLEAR DTC Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Trouble Codes. Clear the DTCs by following the display on the Techstream. Turn the ignition switch off. Disconnect the Techstream from the DLC3.
DATA LIST / ACTIVE TEST [07/2013 - ]
- DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Chassis / EMPS / Data List. According to the display on the Techstream, read the Data List. EMPS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Meter Vehicle Velocity Vehicle speed from skid control ECU/ Min.: 0.0 km/h (0.0 mph) Max.: 300.0 km/h (186.4 mph) 0 km/h (0 mph) The vehicle is stopped. No significant fluctuation The vehicle is driven at a constant speed. Engine Revolution Engine speed/ Min.: 0 rpm Max.: 12800 rpm No significant fluctuation The engine is running at a constant speed. Motor Actual Current Amount of current to motor/ Min.: -327.68 A Max.: 327.67 A Value changes in proportion to steering effort The engine is running and the steering wheel is being turned. Command Value Current Demanded amount of current to motor/ Min.: -327.68 A Max.: 327.67 A Value changes in proportion to steering effort The engine is running and the steering wheel is being turned. Steering Angle Velocity Steering angle speed/ Min.: -32768 deg/s Max.: 32767 deg/s Value changes in proportion to steering effort The engine is running and the steering wheel is being turned. Thermistor Temperature ECU substrate temperature/ Min.: -50.0°C (-58.0°F) Max.: 150.0°C (302.0°F) - The ignition switch is ON. PIG Power Supply Power source voltage to active motor/ Min.: 0.0000 V Max.: 20.1531 V 9 to 16 V The engine is running and power steering is operating. IG Power Supply ECU power source voltage/ Min.: 0.0000 V Max.: 20.1531 V 9 to 16 V The ignition switch is ON. Steering Wheel Torque Steering wheel torque/ Min.: -7.00 Nm Max.: 7.00 Nm Value changes in proportion to steering effort The engine is running and the steering wheel is being turned. Motor Rotation Angle Motor rotation angle/ Min.: 0.000 deg Max.: 360.000 deg Motor rotation angle value changes from 0 to 360° The engine is running and the steering wheel is being turned. Command Val Current 2 Demanded amount of current to motor/ Min.: -327.68 A Max.: 327.67 A Value changes in proportion to steering effort The engine is running and the steering wheel is being turned. PIG2 Voltage Coil rear pressurization voltage/ Min.: 0.000 V Max.: 98.000 V Approximately 27 V The engine is running and the steering wheel is not being turned. Value changes between 16 and 35 V The engine is running and the steering wheel is being turned. Motor Voltage Motor power supply voltage/ Min.: 0.000 V Max.: 98.000 V Approximately 27 V The engine is running and the steering wheel is not being turned. Value changes between 4 and 35 V The engine is running and the steering wheel is being turned. Motor Terminal Volt(U) Motor terminal voltage (U phase)/ Min.: 0.000 V Max.: 98.000 V Value changes between 4 and 35 V The engine is running and the steering wheel is being turned. Motor Terminal Volt(V) Motor terminal voltage (V phase)/ Min.: 0.000 V Max.: 98.000 V Value changes between 4 and 35 V The engine is running and the steering wheel is being turned. Motor Terminal Volt(W) Motor terminal voltage (W phase)/ Min.: 0.000 V Max.: 98.000 V Value changes between 4 and 35 V The engine is running and the steering wheel is being turned. Torque Sensor 1 Output Torque sensor 1 output voltage/ Min.: 0.0000 V Max.: 5.0000 V 2.3 to 2.7 V The engine is running and the steering wheel is not turned (without load). 2.3 to 3.8 V The engine is running and the steering wheel is turned to the right when the vehicle is stopped. 1.2 to 2.7 V The engine is running and the steering wheel is turned to the left when the vehicle is stopped. Torque Sensor 2 Output Torque sensor 2 output voltage/ Min.: 0.0000 V Max.: 5.0000 V 2.3 to 2.7 V The engine is running and the steering wheel is not turned (without load). 1.2 to 2.7 V The engine is running and the steering wheel is turned to the right when the vehicle is stopped. 2.3 to 3.8 V The engine is running and the steering wheel is turned to the left when the vehicle is stopped. TRQ1 Zero Point Value Torque sensor 1 zero point voltage/ Min.: 0.0000 V Max.: 5.0000 V Values differ depending on vehicle The engine is running and the steering wheel is not being turned. TRQ2 Zero Point Value Torque sensor 2 zero point voltage/ Min.: 0.0000 V Max.: 5.0000 V Values differ depending on vehicle The engine is running and the steering wheel is not being turned. IG ON/OFF Times Number of times ignition switch turned to ON/off after fail detection/ Min.: 0 times Max.: 65535 times - This value indicates the number of times the ignition switch is turned to ON and off after the latest DTC detection. Motor Overheat Record Continuous overheat prevention control record/ Unrec or Rec Unrec - Motor Lo Power Record PIG power supply voltage drop record/ Unrec or Rec Unrec - Eng Rev Inter Record Record of engine speed interruption/ Unrec or Rec Unrec - Spd Sig Invalid Record Record of vehicle speed signal invalid/ Unrec or Rec Unrec - Battery Voltage Lo Record Battery voltage reduction history/ Min.: 0 times, Max.: 65535 times 0 to 65535 - The Number of DTCs Number of stored DTCs when freeze frame data stored/ Min.: 0 Max.: 255 0 to 255
DIAGNOSTIC TROUBLE CODE CHART [07/2013 - ]
HINT
If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See Service Information" below.
| DTC Code | Detection Item | Return-to-normal Condition | EPS Warning Light | See Service Information |
|---|---|---|---|---|
| C1511 | Torque Sensor Circuit Malfunction | 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 | 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 | 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 | 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 completes | *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 | 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 | 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 | 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 | 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 | 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 completes | *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 | Ignition switch ON again | *1 | Refer to DTC C1528: Motor Rotation Angle Sensor Malfunction |
| C1531 | ECU Malfunction | 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 | 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 | After normal confirmation | *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 | 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 |
| C1541 | Vehicle Speed Signal Malfunction | After normal confirmation | *1 | Refer to DTC C1541: Vehicle Speed Signal Malfunction |
| C1551 | IG Power Supply Voltage Malfunction | After normal confirmation | *1 | Refer to DTC C1551: IG Power Supply Voltage Malfunction |
| C1552 | PIG Power Supply Voltage Malfunction | After normal confirmation | *1 | Refer to DTC C1552: PIG Power Supply Voltage Malfunction |
| C1554 | Power Supply Relay Failure | 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 | 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 |
| C1581 | Assist Map Number Un-Writing | Assist Map write | *1 | Refer to DTC C1581: Assist Map Number Un-Writing |
| C1582 | Assist Map Number Mismatch | After normal confirmation | *2 | Refer to DTC C1582: Assist Map Number Mismatch |
| U0100 | Lost Communication with ECM / PCM "A" | After normal confirmation | *1 | Refer to DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0416: Invalid Data Received from Vehicle Dynamics Control Module |
| U0122 | Lost Communication with Vehicle Dynamics Control Module | After normal confirmation | *1 | Refer to DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0416: Invalid Data Received from Vehicle Dynamics Control Module |
| U0416 | Invalid Data Received from Vehicle Dynamics Control Module | Ignition switch ON again | *1 | Refer to DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0416: Invalid Data Received from Vehicle Dynamics Control Module |
POWER STEERING SYSTEM
- *1: Warning light comes on
- *2: Warning light turns off