Dtc C1551 Ig Power Supply Voltage Malfunction
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (ECU-IG NO. 1)
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND)
DTC C1551 IG Power Supply Voltage Malfunction |
DESCRIPTION
The power steering ECU distinguishes the ignition switch status as on (IG) or off through the IG power source circuit.DTC No.
| DTC Detection Condition
| Trouble Area
|
C1551
| Open or short in IG power source circuit with ignition switch on (IG).
| - ECU-IG No. 1 fuse
- IG power source circuit
- Power steering ECU
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- If the power steering ECU has been replaced with a new one, perform the assist map writing and the torque sensor zero point calibration (COROLLA_ZRE142 RM00000275305DX.html).
| 1.INSPECT FUSE (ECU-IG NO. 1) |
Remove the ECU-IG No. 1 fuse from the instrument panel junction block.
Check the resistance according to the value(s) in the table below.
- Standard Resistance:
Fuse
| Condition
| Specified Condition
|
ECU-IG No. 1 fuse
| Always
| Below 1 Ω
|
| 2.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND) |
Disconnect the connectors from the power steering ECU.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
E32-6 (IG) - A75-2 (PGND)
| Ignition switch on (IG)
| 11 to 14 V
|
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
A75-2 (PGND) - Body ground
| Always
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
