P1639

P1502 Thru P1640:

Note 9: Go to Cruise Control. Testing and Inspection

Note 11: The Vehicle ID block (VID) needs to be reprogrammed. For instructions refer to Flash VID Block Procedure. Programming and Relearning

Note 12: Vehicle speed information is provided by the Anti-lock Brake System (ABS). For complete ABS diagnosis, Testing and Inspection

Note 13: See BI-Fuel models for instruction on how to retrieve DTCs from secondary module. (See P1640 Diagnostic Trouble Code (DTC) Descriptions for additional information.)

Note 18: DTC P1636 indicates the PCM has lost communication with the Inductive Signature Chip. Replace PCM. If replacement is necessary refer to Flash Electrically Erasable Programmable Read Only Memory (EEPROM). Programming and Relearning