2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1053
* Before the ECM can report DTC P0111 failed, DTC P0101 must run and pass.
* DTC P0112, P0113, P0116, P0117, P0118, P0119, or P0128 is not set.
* The ECT at engine start is colder than 120掳C (248掳F).
* The ECT is warmer than 75掳C (167掳F).
* The vehicle speed is greater than 40 km/h (25 mph).
* The MAF is between 15.6 and 250 g/s.
* Decel fuel cut-off is not active.
* DTC P0111 runs continuously when the above conditions are met for greater than 2 s.
P0111 Rationality Test
* The ECT at engine start is warmer than 35掳C (95掳F).
* The ECT at last engine shut down was warmer than 80掳C (176掳F).
* Since last shut down, the ECT has decreased more than 40掳C (69掳F).
* DTC P0111 runs continuously when the above conditions are met for greater than 20 s.
P0112 and P0113
* The engine run time is greater than 15 s.
* The engine is idling for greater than 3 s.
* The IAT is colder than 35掳C (95掳F).
* The IAT change is more than 2.3掳C (4.1掳F).
* The DTCs runs continuously when the above conditions are met fro greater than 2 s.
P0114
* The ignition is ON.
* The DTCs runs continuously within the enabling conditions.
Conditions for Setting the DTC
P0111
* The ECM detects that the IAT remains steady within 2掳C (4掳F) during the idle test.
* The ECM detects that the IAT decreased less than 2掳C (4掳F) during the cruise test.
* Any of the above conditions exists for greater than a cumulative of 45 s for the cruse test or 55 s for the idle test.
* The ECM detects that the difference between the IAT and the ECT less than -20掳C (-36掳F) OR more than 35掳C (63掳F).
* The above condition exists for greater than 2 s.
P0112
The ECM detects that the intake air temperature is warmer than 132掳C (270掳F) for greater than 4 s or a cumulative of 30 s.
P0113
The ECM detects that the intake air temperature is colder than -42掳C (-43.6掳F) and remains steady within 3掳C (5掳F) during a cumulative air flow of
greater than 999 grams. The scan tool is limited to -40掳C (-40掳F), so the diagnostic procedure uses -39掳C (-38掳F) to determine if there is an IAT
condition. The condition exists for greater than 4 s or a cumulative of 30 s.
P0114
The ECM detects that the IAT sensor signal is intermittent or has abruptly changed for period of time greater than 5 s.
Action Taken When the DTC Sets
DTCs P0111, P0112, P0113, and P0114 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0111, P0112, P0113, and P0114 are Type B DTCs.
Diagnostic Aids
* If the vehicle has sat overnight, the IAT sensor and the ECT sensor values should be within 3掳C (5掳F).
* High resistance on the IAT sensor signal circuit could set a DTC.
Reference Information
Schematic Reference
Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
