| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B5KO |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - ] |
| Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): C1511-C1514,C1517,C1521-C1523,C1528,C1531-C1555; Torque Sensor1; 2019 - 2022 MY Avalon HV [04/2018 - ] | ||
|
DTC |
C1511 |
Torque Sensor1 |
|
DTC |
C1512 |
Torque Sensor2 |
|
DTC |
C1513 |
Torque Sensor Deviation Excessive |
|
DTC |
C1514 |
Torque Sensor Power Supply Voltage |
|
DTC |
C1517 |
Torque Hold |
|
DTC |
C1521 |
Short in Motor Circuit |
|
DTC |
C1522 |
Power Supply Sensor |
|
DTC |
C1523 |
Current Deviation Excessive |
|
DTC |
C1528 |
Motor Rotation Angle Sensor |
|
DTC |
C1531 |
ECU Malfunction |
|
DTC |
C1532 |
ECU Malfunction |
|
DTC |
C1533 |
Temperature Sensor Circuit is Low or High |
|
DTC |
C1534 |
EEPROM |
|
DTC |
C1555 |
Motor Relay Welding Failure |
DESCRIPTION
While torque sensor system, motor system or ECU system malfunctions are detected, the fail-safe function suspends power assist. However, power assist continues with limited assistance amount if only C1533 or C1534 is output.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
|---|---|---|---|---|---|---|
|
C1511 |
Torque Sensor1 |
Torque sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1512 |
Torque Sensor2 |
Torque sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1513 |
Torque Sensor Deviation Excessive |
Torque sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1514 |
Torque Sensor Power Supply Voltage |
Torque sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1517 |
Torque Hold |
Torque sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1521 |
Short in Motor Circuit |
Motor overcurrent |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1522 |
Power Supply Sensor |
Motor current sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1523 |
Current Deviation Excessive |
Excessively large current deviation |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1528 |
Motor Rotation Angle Sensor |
Motor rotation angle sensor malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1531 |
ECU Malfunction |
ECU internal malfunction (CPU malfunction) |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1532 |
ECU Malfunction |
ECU internal malfunction (Peripheral circuit malfunction) |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1533 |
Temperature Sensor Circuit is Low or High |
ECU internal malfunction (Substrate temperature sensor malfunction) |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
The ECU judges the system has returned to normal |
- |
|
C1534 |
EEPROM |
ECU internal malfunction (EEPROM error) |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1555 |
Motor Relay Welding Failure |
Motor relay circuit malfunction |
Rack and pinion power steering gear assembly |
EPS warning light: Comes on |
Power switch is turned on (IG) again |
- |
CAUTION / NOTICE / HINT
NOTICE:
If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here
![2019 - 2022 MY Avalon HV [04/2018 - ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): CALIBRATION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Clear the DTCs.
Chassis > EMPS > Clear DTCs
(b) Check for DTCs.
Chassis > EMPS > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs other than C1511, C1512, C1513, C1514, C1517, C1521, C1522, C1523, C1528, C1531, C1532, C1533, C1534 or C1555 are not output. |
A |
|
DTCs other than C1511, C1512, C1513, C1514, C1517, C1521, C1522, C1523, C1528, C1531, C1532, C1533, C1534 or C1555 are output. |
B |
|
DTCs are not output. |
C |
| A |
|
REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY
|
| B |
|
| C |
|
|
|