F 250 4WD Super Duty V8-7.3L DSL Turbo VIN F (2001)
P1635 - P1639: Testing and Inspection
For diagnosis of code P1636 refer to system experiencing problems
Computers and Control Systems
P1518 - P1781
NOTE 18: DTC 1636 indicates the PCM has lost communication withthe Inductive Signature Chip. Replace the PCM (refer to Flash Electrically
Eraseable Programmable Read Only Memory - Flash EEPROM). See: Powertrain Management/Computers and Control Systems/Testing and