DTC C1057
Precautions: Precautions for ESP® · Precautions for Diagnosing Trouble · Test with Speedometer Tester or Other Equipment · Precautions for Brakes · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
C1057: Power Supply Voltage
•ESP® control module power supply voltage is higher than specified value.
•ESP® control module power supply voltage is lower than specified value. |
•ESP® control module power supply circuit
•ESP® control module ground circuit •Charging system •ESP® control module |
Circuit Diagram
| [A]: | ESP® control module connector (View: [a]) | 1. | Lead to battery | 7. | Lead to solenoid valve power supply relay |
| A1: | Solenoid valve power supply circuit | 2. | Relay box | 8. | “ABS” fuse (25A) |
| A2: | Pump motor power supply circuit | 3. | J/B | 9. | “ABS2” fuse |
| B1: | Ignition power supply circuit | 4. | ESP® control module | 10. | “ABS” fuse (10A) |
| C1: | ESP® control module ground circuit 1 | 5. | Steering angle sensor | 11. | Ignition power supply |
| C2: | ESP® control module ground circuit 2 | 6. | Lead to pump motor relay |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “ESP® System Check” performed?
|
Go to Step 2.
|
Go to ESP® System Check.
|
| 2 |
ESP® control module power supply and ground circuit check
1)Check ESP® control module power supply circuit and ground circuit.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
ESP® control module power supply voltage check
1)Measure battery voltage with engine running at 3,000 rpm.
Is voltage between 9.3 V and 16.8 V?
|
Replace ESP® hydraulic unit / control module assembly and recheck DTC.
|
Check charging system.
•M16A model:
•K14C model: •D16AA model: |