DTC P0661 [LF]: Notes

DTC P0661 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0661	Variable intake air solenoid valve circuit low input
DETECTION CONDITION	The PCM monitors the variable intake air solenoid valve control signal. If the PCM turns variable intake air solenoid valve off but voltage at PCM terminal still remains low, the PCM determines that variable intake air solenoid valve circuit has a malfunction. Diagnostic support note This is a continuous monitor (other). The MIL does not illuminate. FREEZE FRAME DATA (Mode 2/Mode 12) is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Variable intake air solenoid valve connector or terminals malfunction Open circuit or short to ground in variable intake air solenoid valve power supply circuit Short to ground in wiring harness between main relay and variable intake air solenoid valve terminal A Variable intake air solenoid valve power supply circuit related fuse malfunction Open circuit in wiring harness between main relay and variable intake air solenoid valve terminal A Variable intake air solenoid valve malfunction Short to ground in wiring harness between variable intake air solenoid valve terminal B and PCM terminal 2J PCM connector or terminals malfunction Open circuit in wiring harness between variable intake air solenoid valve terminal B and PCM terminal 2J PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0661

Variable intake air solenoid valve circuit low input

DETECTION CONDITION

The PCM monitors the variable intake air solenoid valve control signal. If the PCM turns variable intake air solenoid valve off but voltage at PCM terminal still remains low, the PCM determines that variable intake air solenoid valve circuit has a malfunction.

Diagnostic support note

POSSIBLE CAUSE

Variable intake air solenoid valve connector or terminals malfunction
Open circuit or short to ground in variable intake air solenoid valve power supply circuit
- Short to ground in wiring harness between main relay and variable intake air solenoid valve terminal A
- Variable intake air solenoid valve power supply circuit related fuse malfunction
- Open circuit in wiring harness between main relay and variable intake air solenoid valve terminal A
Variable intake air solenoid valve malfunction
Short to ground in wiring harness between variable intake air solenoid valve terminal B and PCM terminal 2J
PCM connector or terminals malfunction
Open circuit in wiring harness between variable intake air solenoid valve terminal B and PCM terminal 2J
PCM malfunction

Courtesy of MAZDA MOTORS CORP.