1360

Possible Causes

• •Spark plug or coil failure
• •Incorrect plug gap
• •Loose connections at the coil and spark plugs
• •Charring or arcing around the spark plugs
• •Short internal to the coil
• •Use of low-quality coils with a history of internal arcing or other failures
• •Ambient temperatures exceeding 85C continuously or 125C for short intervals
• •Dwell time set too long in diagnostic calibration
• •Adaptive dwell is disabled

Suggested Actions

1. 1Check plug gap on the cylinder associated with the fault.
2. 2Check for loose connections at the coil and spark plugs.
3. 3Look for evidence of charring or arcing around the spark plugs.
4. 4Check coil resistance and verify that it is within specifications.
5. 5Look for a short internal to the coil.
6. 6Ensure the use of high-quality coils without a history of internal arcing or other failures.
7. 7Verify that ambient conditions are not exceeding 85C on a continuous basis or 125C for short intervals.
8. 8Verify that this fault stops occurring when ambient temperatures are lower.
9. 9Verify the dwell time set in the diagnostic calibration is not set too long and that adaptive dwell is enabled.

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