Скачать или смотреть Dodge Caliber | DTC P0302 – Cylinder 2 Misfire Diagnostic

📌 Diagnostic Trouble Code: P0302
🚗 Vehicle: Dodge Caliber
🛠️ Issue: Cylinder 2 Misfire Detected

This video explains the *OEM diagnostic procedure* for *DTC P0302**, triggered when the PCM detects a misfire rate greater than 1% on **cylinder 2* during two consecutive trips. Misfires can cause rough idle, hesitation, poor fuel economy, and even catalytic converter damage.

💡 Common Causes:
Ignition coil #2 or coil control circuit fault
Spark plug damage or wear
Fuel injector #2 malfunction
Fuel pressure too low or leaks
Vacuum leaks or air intake restrictions
Mechanical faults (compression, valve timing, internal engine problems)
Powertrain Control Module (PCM) failure

🧪 Diagnostic Topics Covered:
Visual inspection of engine, pulleys, belts, and electrical connectors
Testing power supply circuits for injector and coil #2
Spark output testing on cylinder 2
Spark plug inspection and gap checking
Fuel pressure testing (spec: 407 KPa ± 34 KPa / 59 psi ± 5 psi)
Fuel injector leak-down test and actuation
Circuit testing for injector and coil control wiring
Comprehensive mechanical checks: vacuum, timing, compression
PCM and wiring harness integrity testing

🧰 Tools You’ll Need:
OBD2 scan tool
Spark tester
Fuel pressure gauge
Multimeter
Basic hand tools

📋 Covered in this video:
Step-by-step electrical and mechanical diagnosis
How to pinpoint ignition, fuel delivery, or mechanical causes
When to replace spark plugs, coils, injectors, or PCM
Final PCM verification after repair

⚠️ Tip: Begin with a complete visual inspection before diving into advanced diagnostics — many misfires are caused by simple, visible issues like damaged wires or vacuum leaks!

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