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DTC P0337 [MZR-CD (RF Turbo)]

BME010200300W09

DTC P0337 | CKP sensor circuit low input
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DETECTION CONDITION | • PCM monitors input signal from CKP sensor while engine is running. If input signal from CKP sensor is not input at 12 crankshaft revolutions, PCM determines CKP sensor circuit low input.
POSSIBLE CAUSE | • CKP sensor malfunction • Connector or terminal malfunction • Short to GND in wiring between CKP sensor terminal A and PCM terminal 29 • Short to GND in wiring between CKP sensor terminal B and PCM terminal 3 • Open circuit in wiring between CKP sensor terminal A and PCM terminal 29
• Open circuit in wiring between CKP sensor terminal B and PCM terminal 3
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to available Service Information. • If vehicle is not repaired, go to next step.
No | Go to next step.
2 | INSPECT POOR CONNECTION OF CKP SENSOR 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 7.
No | Go to next step.
3 | INSPECT CKP SENSOR CIRCUIT FOR SHORT TO GND • Turn engine switch to OFF. • Inspect continuity between following harnesses:

  - CKP sensor terminal A and body GND.
  - CKP sensor terminal B and body GND.

• Is there continuity?
Yes
Repair or replace harness for short to GND, go to Step 7.
No | Go to next step.
4 | INSPECT CKP SENSOR • Inspect CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace CKP sensor, go to Step 7. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
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 Step 7.
No | Go to next step.
6 | INSPECT CKP SENSOR CIRCUIT FOR OPEN • Turn engine switch to OFF. • Inspect continuity between following harnesses:

  - CKP sensor terminal A and PCM terminal 29.
  - CKP sensor terminal B and PCM terminal 3.

• Is there continuity?
Yes
Go to next step.
No | Repair or replace harness for open, go to next step.
7 | VERIFY TROUBLESHOOTING OF DTC P0337 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.
8 | 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.