P1612

DTC P1612
Highside switch control cannot switch ON or has S/C to ground.

Possible causes by suggested order of priority:
^ C193/53 (OLG) shorted to C193/28 (B).
^ C193/53 (OLG) shorted to vehicle earth.
^ C193/30 (OP) shorted to C193/28 (B).
^ C193/30 (OP) shorted to vehicle earth.
^ C193/33 (OW) shorted to C193/28 (B).
^ C193/33 (OW) shorted to vehicle earth.
^ C193/32 (SO) shorted to C193/28 (B).
^ C193/32 (SO) shorted to vehicle earth.
^ ECU fault.

C193/53 (OLG) shorted to C193/28 (B).
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/53 (OLG) Shorted To Vehicle Earth.
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/30 (OP) Shorted to C193/28 (B).
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/30 (OP) Shorted to Vehicle Earth.
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/33 (OW) Shorted to C193/28 (B).
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/33 (OW) Shorted to Vehicle Earth.
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/32 (SO) Shorted to C193/28 (B).
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

C193/32 (SO) Shorted to Vehicle Earth.
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

ECU Fault.
CHECK THE FOLLOWING:
^ Ensure all of the checks for short to vehicle earth 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.