P0748

P0748. LINE PRESSURE CONTROL SOLENOID MALFUNCTION
CHECK THE LINE PRESSURE CONTROL SOLENOID GROUND CIRCUIT.
1. Disconnect the transmission electrical connector, JB155.
2. Measure the resistance between JB155, pin 18 (B) and GROUND.
^ Is the resistance greater than 5 ohms?
-> Yes
-> No

CHECK THE LINE PRESSURE CONTROL SOLENOID RESISTANCE.
1. Measure the resistance between JB155, pin 15 and pin 18 at the transmission.
^ Is the resistance 2.9 ohms?
-> Yes
-> No
INSTALL a new LPC solenoid. CLEAR the DTC. TEST the system for normal operation.

CHECK THE LINE PRESSURE CONTROL SOLENOID GROUND WIRE FOR CONTINUITY.
1. Disconnect the TOM electrical connector, JB131.
2. Measure the resistance between JB155, pin 18 (B) and JB131, pin 17 (B).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit.
-> No
Contact dealer technical support for advice on possible module failure.

CHECK THE LINE PRESSURE CONTROL SOLENOID SIGNAL WIRE FOR CONTINUITY.
1. Measure the resistance between JB155, pin 15 (r) and JB131, pin 18 (r).
^ Is the resistance greater than 5 ohms?
-> Yes
-> No
Contact dealer technical support for advice on possible module failure.