P0778

P0778. 2/4 BRAKE DUTY PRESSURE CONTROL SOLENOID MALFUNCTION
CHECK THE 2/4 BRAKE DUTY 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 2/4 BRAKE DUTY PRESSURE CONTROL SOLENOID RESISTANCE.
1. Measure the resistance between JB155, pin 16 and pin 18 at the transmission.
^ Is the resistance 2.9 ohms?
-> Yes
INSTALL a new 2/4 brake duty pressure control solenoid. CLEAR the DTC. TEST the system for normal operation.
-> No

CHECK THE 2/4 BRAKE DUTY 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 2/4 BRAKE DUTY PRESSURE CONTROL SOLENOID SIGNAL WIRE FOR CONTINUITY.
1. Measure the resistance between JB155, pin 16 (G) and JB131, pin 03 (G).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit.
-> No
Contact dealer technical support for advice on possible module failure.