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 DTC P0661 [LF, L3]

DTC P0661 [LF, L3]

id0102a18217a3

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 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.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• The FREEZE FRAME DATA is not available.
• Are any DTCs is stored in the PCM memory.

POSSIBLE CAUSE

• Variable intake-air solenoid valve malfunction
• Open circuit in wiring harness between main relay and variable intake-air solenoid valve terminal A
• Open circuit in wiring harness between variable intake-air solenoid valve terminal B and PCM terminal 2J
• Short to ground in wiring harness between variable intake-air solenoid valve terminal B and PCM terminal 2J
• Connector or terminal malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service information.
If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT VARIABLE INTAKE-AIR SOLENOID VALVE CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the variable intake-air solenoid valve connector.
• Inspect for poor connection (damaged/pulled-out pins, corrosion, etc.).
• Is there malfunction?
Yes
Repair or replace the terminal, then go to Step 9.
No
Go to the next step.
4
INSPECT VARIABLE INTAKE-AIR SOLENOID VALVE MALFUNCTION
• Perform the variable intake-air solenoid valve inspection.
• Is variable intake-air solenoid valve normal?
Yes
Go to the next step.
No
Replace the variable intake-air solenoid valve, then go to step 9.
5
INSPECT VARIABLE INTAKE-AIR SOLENOID VALVE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between variable intake-air solenoid valve terminal A (wiring harness-side) and body ground.
• Is the voltage B+?
Yes
Go to the next step.
No
Repair or replace the wiring harness for open, then go to Step 9.
6
INSPECT VARIABLE INTAKE-AIR SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND
• Inspect for continuity between variable intake-air solenoid valve terminal B (wiring harness-side) and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness for short to ground, then go to Step 9.
No
Go to the next step.
7
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Disconnect the PCM connector.
• Inspect for poor connection at terminal 2J. (damaged/pulled-out pins, corrosion, etc.).
• Is there malfunction?
Yes
Repair the terminal, then go to Step 9.
No
Go to the next step.
8
INSPECT VARIABLE INTAKE-AIR SOLENOID VALVE CONTROL CIRCUIT FOR OPEN
• Inspect for continuity between variable intake-air solenoid valve terminal B (wiring harness-side) and PCM terminal 2J (wiring harness-side).
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for an open circuit, then go to the next step.
9
VERIFY TROUBLESHOOTING OF DTC P0661 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Perform the KOEO or KOER self-test.
• Is the DTC P0661 present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
• Are any DTC present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.