Diagnostic Aids

Checking malfunction history on scan tester may help determine cause of intermittent code. Check tightness of all terminals and connectors.

When attempting to diagnose an intermittent problem, use scan tester to review supplemental diagnostic information. Supplemental data (scan tester MALF HISTORY) can be used to help duplicate an intermittent problem. Using Diagnostic Service Probe (12092782) allows voltage to be read on wires without disconnecting connectors.

Fig 1: Code 19 Schematic, 6X Signal Fault - 1 Of 2

Fig 2: Code 19 Schematic, 6X Signal Fault - 2 Of 2

Fig 3: Code 19 Diagnostic Flow Chart, 6X Signal Fault