DTC P0660:00 [MZR 1.5, MZR 1.6]

id0102f0706200

DTC P0660:00

Variable intake air control circuit malfunction
DETECTION CONDITION
•  If the PCM turns the variable intake air shutter valve actuator to open or close but the voltages do not coincide with the PCM signal voltages, the PCM determines that the variable intake air control circuit has a malfunction.
•  The PCM could not perform the self test for the variable intake air control circuit.
Diagnostic support note
•  This is a continuous monitor (other).
•  The MIL does not illuminate.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Variable intake air shutter valve actuator connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  Variable intake air shutter valve actuator terminal A—PCM terminal 2AJ
―  Variable intake air shutter valve actuator terminal B—PCM terminal 2AI
•  PCM connector or terminals malfunction
•  Short to power supply in wiring harness between the following terminals:
―  Variable intake air shutter valve actuator terminal A—PCM terminal 2AJ
―  Variable intake air shutter valve actuator terminal B—PCM terminal 2AI
•  Open circuit in wiring harness between the following terminals:
―  Variable intake air shutter valve actuator terminal A—PCM terminal 2AJ
―  Variable intake air shutter valve actuator terminal B—PCM terminal 2AI
•  Variable intake air shutter valve actuator malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY RELATED SERVICE 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.
2
INSPECT VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the variable intake air shutter valve actuator connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 8.
No
Go to the next step.
3
INSPECT VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR CIRCUIT FOR SHORT TO GROUND
•  Variable intake air shutter valve actuator connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  Variable intake air shutter valve actuator terminal A
―  Variable intake air shutter valve actuator terminal B
•  Is there continuity?
Yes
If the short to ground circuit could be detected:
•  Repair or replace the wiring harness for a possible short to ground.
If the short to ground circuit could not be detected:
•  Replace the PCM (short to ground in PCM internal circuit).
Go to Step 8.
No
Go to the next step.
4
INSPECT PCM CONNECTOR AND TERMINALS
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 8.
No
Go to the next step.
5
INSPECT VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR CIRCUIT FOR SHORT TO POWER SUPPLY
•  Variable intake air shutter valve actuator and PCM connectors are disconnected.
•  Switch the ignition to ON (engine off).
•  Measure the voltage between the following terminals (wiring harness-side) and body ground:
―  Variable intake air shutter valve actuator terminal A
―  Variable intake air shutter valve actuator terminal B
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
No
Go to the next step.
6
INSPECT VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR CIRCUIT FOR OPEN CIRCUIT
•  Variable intake air shutter valve actuator and PCM connectors are disconnected.
•  Switch the ignition to off.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Variable intake air shutter valve actuator terminal A—PCM terminal 2AJ
―  Variable intake air shutter valve actuator terminal B—PCM terminal 2AI
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7
INSPECT VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR
•  Inspect the variable intake air shutter valve actuator.
•  Is there any malfunction?
Yes
Replace the variable intake air shutter valve actuator, then go to the next step.
(See VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].)
No
Go to the next step.
8
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOEO or KOER self test.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR 1.5, MZR 1.6].)
No
DTC troubleshooting completed.