Operation CHARM: Car repair manuals for everyone.
Home >> Scion >> 2013 >> FR-S F4-2.0L (FA20) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Check For Intermittent Problems

Check For Intermittent Problems






FA20 ENGINE CONTROL: SFI SYSTEM: CHECK FOR INTERMITTENT PROBLEMS; 2013 MY FR-S [03/2012 -]

HINT
Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

(a) Clear DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Switch the ECM from normal mode to check mode using the Techstream Check Mode Procedure.
(c) Perform a simulation test.
(d) Check and wiggle the harness(es), connector(s) and terminal(s).
pro multis · About Operation CHARM