P1613

DTC P1613
Highside switch control cannot switch OFF or has S/C to +12V.

Possible causes by suggested order of priority:
^ C193/53 (OLG) shorted to +12V.
^ C193/30 (OP) shorted to +12V.
^ C193/33 (OW) shorted to +12V.
^ C193/32 (SO) shorted to +12V.
^ ECU fault.

C193/53 (OLG) Shorted to +12V.
CHECK THE FOLLOWING:
^ C193/53 (OLG) shorted to +12V.
^ Disconnect EAT C193 before measuring voltage between C193/53 (OLG) and vehicle earth.
ACCEPTABLE RESULTS
^ Between 0.0 V and 4.0 V.
DIAGNOSTIC HINTS
^ If the voltage is above the acceptable range check the harness connected to C193/53 (OLG) for short circuit to +12V.

C193/30 (OP) Shorted to +12V.
CHECK THE FOLLOWING:
^ C193/30 (OP) shorted to +12V.
^ Disconnect EAT C193 before measuring voltage between C193/30 (OP) and vehicle earth.
ACCEPTABLE RESULTS
^ Between 0.0 V and 4.0 V.
DIAGNOSTIC HINTS
^ If the voltage is above the acceptable range check the harness connected to C193/30 (OP) for short circuit to +12V.

C193/33 (OW) Shorted to +12V.
CHECK THE FOLLOWING:
^ C193/33 (OW) shorted to +12V.
^ Disconnect EAT C193 before measuring voltage between C193/33 (OW) and vehicle earth.
ACCEPTABLE RESULTS
^ Between 0.0 V and 4.0 V.
DIAGNOSTIC HINTS
^ If the voltage is above the acceptable range check the harness connected to C193/33 (OW) for short circuit to +12V.

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.
ACCEPTABLE RESULTS
^ Between 0.0 V and 4.0 V.
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 all of the checks for short to +12V have been carried out.
^ If these problems are not present check transmission ECU by substitution with a known good unit.
POSSIBLE FAULTS
^ Faulty transmission ECU.