Chart 18 - Secondary Ignition Noise (From Spark Plugs or Wires)

Diagnostic Chart 18 (Part 1 Of 2):

Diagnostic Chart 18 (Part 2 Of 2):

IMPORTANT: Only perform this chart after checking antenna system for proper operation and grounding [Refer to Chart 16 "Radio Noise Entering Through Antenna System (Frontway Noise)."] Chart 16 - Radio Noise Entering Through Antenna SYS