P0660

Test 1 - 2:

Test 3 - 7:

Test 8 - 10:

SYMPTOM
P0660-MANIFOLD TUNE VALVE SOLENOID CIRCUIT

WHEN MONITORED
With the ignition on. ASD Relay energized. Battery voltage greater than 10 volts.

SET CONDITION
The PCM senses the MTV is not at the desired state.

POSSIBLE CAUSES
- Ground circuit open
- MTV relay output circuit open
- Fused B+ circuit
- ASD relay output circuit
- MTV relay control circuit shorted to ground
- MTV relay
- MTV relay control circuit open
- Manifold tuning valve solenoid
- PCM