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DTC P0045 [MZR-CD (RF Turbo)]

id0102f1828700

DTC P0045 | Variable boost control (VBC) solenoid valve control circuit low or high input
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DETECTION CONDITION | • The PCM monitors the output signal when the PCM controls the variable boost control solenoid valve between 30 and 69%. If the current of the variable boost control solenoid valve is less than 0.8 A during variable boost control solenoid valve control, the PCM determines that there is a malfunction in the variable boost control solenoid valve control circuit. Diagnostic support note • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • VBC solenoid valve malfunction • Connector or terminal malfunction • Open circuit in wiring harness between PCM control relay terminal C and VBC solenoid valve terminal A • Open circuit in wiring harness between VBC solenoid valve terminal B and PCM terminal 6 • Short to ground in wiring harness between VBC solenoid valve terminal B and PCM terminal 6 • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? • Connect the WDS or equivalent to the DLC-2. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the PENDING CODE for this DTC present? | Yes | Go to the next step.
No | Intermittent concern exists. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING".
4 | INSPECT VBC SOLENOID VALVE CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the VBC solenoid valve connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 10.
No | Go to the next step.
5 | INSPECT VBC SOLENOID VALVE POWER CIRCUIT FOR OPEN CIRCUIT • Turn the engine switch to the ON position (Engine off). • Measure the voltage between VBC 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 a possible open circuit or short to ground, then go to Step 10.
6 | INSPECT VBC SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND • Turn the engine switch off. • Inspect for continuity between VBC solenoid valve terminal B (wiring harness-side) and body ground. • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground, then go to Step 10.
No | Go to the next step.
7 | INSPECT VBC SOLENOID VALVE • Inspect the VBC solenoid valve. (See VARIABLE BOOST CONTROL (VBC) SOLENOID VALVE INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace the VBC solenoid valve, then go to Step 10. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
8 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 10.
No | Go to the next step.
9 | INSPECT VBC SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT • Turn the engine switch off. • Inspect for continuity between VBC solenoid valve terminal B (wiring harness-side) and PCM terminal 6 (wiring harness-side). • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness for a possible open circuit, then go to the next step.
10 | VERIFY TROUBLESHOOTING OF DTC P0045 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the PENDING CODE for this DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
11 | VERIFY AFTER REPAIR PROCEDURE • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Is any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | DTC troubleshooting completed.