JB1 - DTC 0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307, 0308

- Connect engine analyzer to view parade display of ignition system secondary.

- While slowly increasing engine RPM from idle to 1300 RPM, compare engine analyzer display to the following illustrations.

NOTE: The 4.6L engine operates in a double strike mode up to 1600 rpm.

Spark Plug Firing Voltage Pattern:

Go to JB7. JB7 - Verify Scope Pattern 1

Spark Plug Firing Voltage Pattern:

Go to JB8. JB8 - Verify Scope Pattern 2

Spark Plug Firing Voltage Pattern:

Go to JB9. JB9 - Verify Scope Pattern 3

Spark Plug Firing Voltage Pattern:

Go to JB10. JB10 - Verify Scope Pattern 4

Spark Plug Firing Voltage Pattern:

Go to JB11. JB11 - Verify Scope Pattern 5