Intermittent Diagnostic Trouble Codes

Most intermittent malfunctions occur from vibration, temperature change, moisture change and poor connections. Try to determine under what specific conditions problem occurs. Try to duplicate those conditions while monitoring circuit suspected of being faulty using data recorder function of scan tool. The following additional checks may assist in identifying a possible intermittent problem:

• Check all pertinent Technical Service Bulletins (TSBs).
• Visually inspect related wiring connectors for broken, bent, pushed out or corroded terminals.
• Visually inspect related wiring for chafed, pierced or partially broken wires.
• Wiggle suspected wire(s) or vibrate suspected component.
• Manipulate heat and/or humidity to suspected component.