DTC B1352 [ELECTRO HYDRAULIC POWER ASSIST STEERING (EHPAS)]


id0602b1800400

DTC
B1352
Ignition power supply
DETECTION CONDITION
•  Less than 2.5 V detected at the voltage monitor of the EHPAS control module
POSSIBLE CAUSE
•  Short to ground in wiring harness between EHPAS control module terminal 2F and ignition switch
•  Open circuit in wiring harness between EHPAS control module terminal 2F and ignition switch
•  Poor connection at connectors

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT FUSES
•  Are the fuses normal?
Yes
Go to the next step.
No
Repair or replace the fuses, then go to the step 3.
2
INSPECT EHPAS CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN OR SHORT CIRCUIT
•  Start the engine.
•  Measure the voltage between following EHPAS control module terminal (wiring harness-side) and ground.
―  EHPAS control module: 2F—ground
•  Is voltage 10 V or more?
Yes
Go to the next step.
No
Repair or replace the harness for open circuit between EHPAS control module and ground, then go to next step.
3
VERIFY THAT THE SAME DTC IS NOT PRESENT
•  Make sure to reconnect all disconnected connectors.
•  Is same DTC present?
Yes
Replace the electric power steering oil pump component, then go to the next step.
No
Go to the next step.
4
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.