Dtc C1552 Pig Power Supply Voltage Malfunction
Steering. Lexus Is250, Is220D. Gse20 Ale20
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (EPS FUSE)
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY)
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BODY GROUND)
DTC C1552 PIG Power Supply Voltage Malfunction |
DESCRIPTION
This circuit supplies power to drive the power steering motor.DTC No.
| DTC Detection Condition
| Trouble Area
|
C1552
| This DTC is detected when power source voltage drops or remains high.
| - EPS fuse
- Wire harness
- Power steering ECU assembly
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT FUSE (EPS FUSE) |
Remove the EPS fuse from the engine room relay block.
Check for continuity of the EPS fuses.
- OK:
- Continuity
| 2.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY) |
Disconnect the A31 connector from the power steering ECU assembly.
Measure the voltage according value(s) in the table below.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
A31-4 (PIG) - Body ground
| Always
| 10 to 14 V
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BODY GROUND) |
Measure the resistance according value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
A31-5 (PGND) - Body ground
| Always
| Blow 1 Ω
|
- NOTICE:
- If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point (Click here).
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK |
|
|
|
| REPLACE POWER STEERING ECU ASSEMBLY |
|
