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DTC P0662 [MZR-CD (RF Turbo)]

BME010200600W05

DTC P0662 | VSC solenoid valve circuit high input
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DETECTION CONDITION | • PCM monitors input voltage from VSC solenoid valve while engine is running. If input voltage from VSC solenoid valve is above B+, PCM determines suction control valve circuit high input.
POSSIBLE CAUSE | • VSC solenoid valve malfunction • Connector or terminal malfunction • Short to power circuit in wiring between VSC solenoid valve terminal B and PCM terminal 101 • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | PERFORM DTC CONFIRMATION PROCEDURE • Perform "DTC Confirmation Procedure". (See DTC CONFIRMATION PROCEDURE [MZR-CD (RF Turbo)].) • 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 INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
2 | INSPECT POOR CONNECTION OF VSC SOLENOID VALVE CONNECTOR • Turn engine switch to OFF. • Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction? | Yes | Repair or replace suspected terminal, go to Step 6.
No | Go to next step.
3 | INSPECT VSC SOLENOID VALVE CIRCUIT FOR SHORT TO POWER • Turn engine switch to ON (Engine switch OFF). • Inspect voltage between VSC solenoid valve terminal B and body GND. • Is voltage below 1.0 V? | Yes | Go to next step.
No | Repair or replace harness for short to power, go to Step 6.
4 | INSPECT VSC SOLENOID VALVE • Inspect VSC solenoid valve. (See VARIABLE SWIRL CONTROL (VSC) SOLENOID VALVE INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace VSC solenoid valve, go to Step 5.
No | Go to next step.
5 | INSPECT POOR CONNECTION OF PCM CONNECTOR • Turn engine switch to OFF. • Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction? | Yes | Repair or replace suspected terminal, go to next step.
No | Go to next step.
6 | VERIFY TROUBLESHOOTING OF DTC P0662 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from PCM memory using WDS or equivalent. • Start engine. • Is same DTC present? | Yes | Replace PCM, go to next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to next step.
7 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Is there any DTC present? | Yes | Go to applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.