Mazda Mazda6 - Dtc P0661

F2–156
ON-BOARD DIAGNOSTIC
DTC P0661
A6E407001082241
Diagnostic procedure
DTC P0661 VSC solenoid valve circuit low input
DETECTION
CONDITION
• PCM monitors input voltage from VSC solenoid valve while engine is running. If input voltage from VSC
solenoid valve is below 0.1 V, PCM determines suction control valve circuit low input.
POSSIBLE
CAUSE
• VSC solenoid valve malfunction
• Connector or terminal malfunction
• Short to GND in wiring between VSC solenoid valve terminal A and PCM control relay terminal C
• Short to GND in wiring between VSC solenoid valve terminal B and PCM terminal 101
• Open circuit in wiring between VSC solenoid valve terminal PCM control relay terminal C
• Open circuit in wiring between VSC solenoid valve terminal B and PCM terminal 101
• PCM malfunction
STEP INSPECTION ACTION
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform “DTC Confirmation Procedure”.
(See F2–85 DTC CONFIRMATION
PROCEDURE)
• Is same DTC present during KOEO or KOER
self-test?
Yes Go to next step.
No Intermittent concern exists. Go to “Intermittent Concern
Troubleshooting”.
(See F2–227 INTERMITTENT CONCERN
TROUBLESHOOTING)
A
B
VSC SOLENOID VALVE
PCM
101
AB
3
6
3
2
6
5
101
4
2
PCM CONTROL RELAY
TERMINAL C
VSC SOLENOID VALVE
HARNESS SIDE CONNECTOR
PCM
HARNESS SIDE CONNECTOR