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DTC P0337 [MZR-CD (RF Turbo)]

BME010200102272

DTC P0337 | CKP sensor circuit low input
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DETECTION CONDITION | • The PCM monitors the input signal from the CKP sensor and the CMP sensor while the engine is running. If the input signal from the CKP sensor is not input while the PCM detects 28 pulses from the CMP sensor, the PCM determines that there is a malfunction in the CKP sensor 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 | • CKP sensor malfunction • Connector or terminal malfunction • Short to GND in wiring harness between CKP sensor terminal A and PCM terminal 29 • Short to GND in wiring harness between CKP sensor terminal B and PCM terminal 3 • Open circuit in wiring harness between CKP sensor terminal A and PCM terminal 29
• Open circuit in wiring harness between CKP sensor terminal B and PCM terminal 3
• Improper CKP sensor air gap
• CKP sensor pulsar malfunction
• 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 Information availability. • Is any related repair 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 | 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 same DTC present? | Yes | Go to the next step.
No | Intermittent concern exists. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING". (See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
4 | INSPECT CKP SENSOR AIR GAP • Measure the CKP sensor air gap. • Is the CKP sensor air gap normal? Specification 1.5-2.5 mm {0.059-0.098 in} | Yes | Go to the next step.
No | Replace the CKP sensor, then go to Step 11.
5 | INSPECT CKP SENSOR PULSAR • Inspect the CKP sensor pulsar for damage and/or cracks. • Is there any malfunction? | Yes | Replace the CKP sensor pulsar, then go to Step 11.
No | Go to the next step.
6 | INSPECT CKP SENSOR CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Inspect for poor connection (such as damaged/pulled-out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the suspected terminal, go to Step 11.
No | Go to the next step.
7 | INSPECT CKP SENSOR FOR SHORT TO GND • Turn the engine switch off. • Inspect for continuity between the following terminals and body GND:

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

• Is there continuity?
Yes
Repair or replace the wiring harness for a short to GND, go to Step 11.
No | Go to the next step.
8 | INSPECT CKP SENSOR • Inspect the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace the CKP sensor, go to Step 11.
No | Go to the next step.
9 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Inspect for poor connection (such as damaged/pulled-out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the suspected terminal, go to Step 11.
No | Go to the next step.
10 | INSPECT CKP SENSOR FOR OPEN CIRCUIT • Turn the engine switch off. • Inspect for continuity between the following terminals:

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

• Is there continuity?
Yes
Go to the next step.
No | Repair or replace the wiring harness for an open circuit, go to the next step.
11 | VERIFY TROUBLESHOOTING OF DTC P0337 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine and idle it. • Is the same DTC present? | Yes | Replace the PCM, go to the next step.
No | Go to the next step.
12 | VERIFY AFTER REPAIR PROCEDURE • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.