Diagnostic Aids

Tech 1 does not have any ability to assist in diagnosis of a Code P1350.

• EST Line
  
  Code P1350 will set if IC circuit is shorted to voltage or open during crank. Code P1350 will also set if by-pass circuit is shorted to voltage during crank.
• By-pass Line
  
  Code P1361 will set during engine run operation if by-pass circuit is shorted to ground or open. Code P1350 will not set if Code P1361 is stored. If Code P1350 is stored, Code P1361 can also set.

Fig 1: Code P1350 Schematic (3.1L) IC Circuit Open

Fig 2: Code P1350 Flow Chart (3.1L) IC Circuit Open

Fig 3: Code P1350/1361, IC Circuit Open Flow Chart (3.1L)