P0703

Solenoid valve lockup clutch check (S/C to +12V).
Reference: P0703 (1) Folder: Diagnostic Flows

Possible causes by suggested order of priority:
- C193/32 (SO) shorted to +12V.
- ECU fault.
C193/32 (SO) shorted to +12V.
CHECK THE FOLLOWING:
- C193/32 (SO) shorted to +12V..
- Disconnect EAT C193 before measuring voltage between C193/32 (SO) and vehicle earth.
Between 0.0V and 4.0V.
DIAGNOSTIC HINTS
- If the voltage is above the acceptable range check the harness connected to C193/32 (SO) for short circuit to +12V

ECU fault.
CHECK THE FOLLOWING:
- Ensure that the check for short to +12V has been carried out.
- Check transmission ECU by substitution with a known good unit.
POSSIBLE FAULTS
- Faulty transmission ECU.