Are you doing diagnostic for the code's or are you just replacing parts ? With each code in a factory service repair manual is an associated diagnostic procedure , testing electrical circuit's for what ever sensor the code is for . Sounds like you should take your vehicle to a qualified repair shop that has the diagnostic equipment an knowledge . Sounds like you have no clue how OBD2 works . Just because you have a code reader does not mean you have the ability to repair OBD 2 vehicles .
Motor Age TST Diagnosing Driveability with Global OBD II
You don't even know what the wrench light is for ! You like making part stores rich ?
The SERVICE (Wrench) telltale is pulled to ground by the powertrain control module (PCM). When the lamp is pulled to ground, current from the ignition circuit flows through the indicator lamp, allowing it to come ON. The PCM will turn the SERVICE (Wrench) telltale ON for all non-emission related DTCs that require that a telltale be turned ON (some DTCs do not turn on a telltale but are stored to aid in diagnosis).
The SERVICE (Wrench) telltale will also be turned ON if the ABS control module has detected a fault in its own warning indicator system. If the ABS system cannot turn on its own telltale, a message will be sent to the PCM through the class 2 data bus (circuit 1807) to turn on the SERVICE (Wrench) telltale.
The SERVICE (Wrench) telltale will be turned ON for 2-3 seconds when the ignition is turned to RUN for a bulb test.
×