P1288A Intake Manifold Short Runner Solenoid Ckt (OBD II)

NAME OF CODE
Short Runner Valve Solenoid Circuit

WHEN MONITORED
With the ignition on and battery voltage above 10.4 volts.

SET CONDITION
The SRV solenoid control circuit is not in the expected state when request to operate by the PCM.

THEORY OF OPERATION
The SRV system operates under WOT conditions above 5000 rpm to maximize engine performance. When actuated by the PCM, the SRV solenoid energizes, allowing mechanical linkage to redirect the intake air flow to six short runners. The PCM looks for a current spike when actuating the solenoid. If the spike is not present, the PCM sets the trouble code.

POSSIBLE CAUSES
- Open or shorted control circuit
- Open fused ASD relay output circuit
- Open or shorted solenoid control coil
- PCM failure
- Connector terminals
- Connector wires